Post by: bikergeorge on October 11, 2016, 01:47:27 am
had my gti a few days now and loving it, but it is a bit too quiet I find even when going for it as I am having to use the rev counter to shift as I can't hear the engine clearly enough.
At the moment I can only afford a cat back, so do they turn any lights on, do they require a remap, and which one out of miltek bcs scorpion or cobra is best.
After a non resonated system, and eventually it will have a decat 3" downpipe and a stage 2 remap so looking for something compatible.
Nothing too rowdy, and not too drony on the motorway, just a nice note when gunning it
Cheers
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Post by: RetroRaz on October 11, 2016, 06:03:38 am
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Post by: AJP on October 11, 2016, 08:56:40 am
Post by: FJ1000 on October 11, 2016, 09:08:36 am
They're a welding specialist and make some incredible stuff in there; exhausts, roll cages, intercoolers, even furniture...the quality of work is exemplary, really nice guys, and they have extensive dealings with motorsport (inc F1).
Here's the system they made for my RS:
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fuploads.tapatalk-cdn.com%2F20161011%2Fd55fa85ff518a4b5cb02b4495e212667.jpg&hash=1ef8d0cef91bdf3b98607659ac71d8b7c4fbbf3a)
200 cell sport cats, fully mandrel bent, exhaust valves from a Bentley.
And it sounds amazing!
I went back there for an ali undertray too, again brilliant job.
They priced up a golf GTi cat-back exhaust for me at around £600; however problem for me is mainly logistics. My wife uses the golf everyday, and JCWF will need it for a few days.
It'd be great if someone tried it out and reported back - I'm sure they wouldn't be disappointed.
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Post by: Sulley91 on October 11, 2016, 06:23:08 pm
3" downpipe in to a 200 cell sports cat into 2.75 catback sounds quality and doesn't drone either :happy2:
Post by: bikergeorge on October 12, 2016, 06:02:47 am
I'll be selling my Milltek turbo back exhaust in the next few daysHow long till you sell and how much you looking for, cheers
3" downpipe in to a 200 cell sports cat into 2.75 catback sounds quality and doesn't drone either :happy2:
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Post by: Sulley91 on October 12, 2016, 06:58:39 am
I'm removing the exhaust tonight andI'll be selling my Milltek turbo back exhaust in the next few daysHow long till you sell and how much you looking for, cheers
3" downpipe in to a 200 cell sports cat into 2.75 catback sounds quality and doesn't drone either :happy2:
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Downpipe and sports cat £350 the whole system is only a year old
And for the catback £320 let me know what you think bud
Post by: bikergeorge on October 13, 2016, 06:58:52 am
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Post by: Ollieeee on October 13, 2016, 10:01:06 am
So, this is a bit left-field, but someone's got to try out JC Weldfab in Wellingborough for a GTi exhaust!
They're a welding specialist and make some incredible stuff in there; exhausts, roll cages, intercoolers, even furniture...the quality of work is exemplary, really nice guys, and they have extensive dealings with motorsport (inc F1).
Here's the system they made for my RS:
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fuploads.tapatalk-cdn.com%2F20161011%2Fd55fa85ff518a4b5cb02b4495e212667.jpg&hash=1ef8d0cef91bdf3b98607659ac71d8b7c4fbbf3a)
200 cell sport cats, fully mandrel bent, exhaust valves from a Bentley.
And it sounds amazing!
I went back there for an ali undertray too, again brilliant job.
They priced up a golf GTi cat-back exhaust for me at around £600; however problem for me is mainly logistics. My wife uses the golf everyday, and JCWF will need it for a few days.
It'd be great if someone tried it out and reported back - I'm sure they wouldn't be disappointed.
Sent from my iPhone using Tapatalk
That sounds the absolute tits :laugh: :jumping: :notworthy:
Post by: Rippers on October 24, 2016, 01:32:42 pm
Post by: Paradox1 on October 27, 2016, 10:02:44 am
Deeper tone, quite on idle for around town but an animal when you hit boost!
Post by: pudding on October 28, 2016, 03:44:02 pm
I've noticed bugger all in terms of performance improvement though. Maybe my Stage 1 map needs tweaking a bit.
Post by: AJP on October 28, 2016, 04:19:46 pm
Yeah I've got a downpipe + standard cat back on mine. I like it. Meatier at idle but OEM quiet every where else, which suits and old guffer like me.Really? I noticed an immediate improvement when I had a full Powervalve fitted (even made the clutch slip). That was on the existing Stage 1 R-Tech map. After Stage 2 it felt like I gained the same again. In fact, from memory it went like this:
I've noticed bugger all in terms of performance improvement though. Maybe my Stage 1 map needs tweaking a bit.
Stage 1 - 243bhp 296lb/ft
Stage 1 & exhaust - 260bhp 320lb/ft
Stage 2 & exhaust - 270bhp 345lb/ft
You should definitely feel some gain from the downpipe. As I understand it the vast majority of the restriction is from the downpipe/cat and not the catback section. But maybe that's not the case after all? What downpipe is it?
Post by: Flyingscotsman on October 28, 2016, 09:16:54 pm
Post by: AJP on October 29, 2016, 11:30:08 am
All you guys umming and ahhing over downpipes, cats, whatever, just hold on until the new year (saving cash in the meantime) and I'm sure @Powervalve Nige will oblige another group buy.
That's what I did, and I'm so damn happy I waited. Apart from the power and torque gains I posted above (I've got graphs to show this if anyone's interested) the noise of the thing still puts a big smile on my face. In fact I've recently noticed something new; usually going from 3rd to 4th at full chat I'm now getting a nice 'POP' between gears. I'm on a Loba pump now so the extra grunt might be something to do with it. But whatever, it's mega. And I know it'll handle anything a k04 can throw at it when I go down that road. You get what you pay for.
Post by: absolute on October 29, 2016, 01:38:14 pm
Post by: bonelorry on October 29, 2016, 01:41:18 pm
He's right you know.
All you guys umming and ahhing over downpipes, cats, whatever, just hold on until the new year (saving cash in the meantime) and I'm sure @Powervalve Nige (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=331) will oblige another group buy.
That's what I did, and I'm so damn happy I waited. Apart from the power and torque gains I posted above (I've got graphs to show this if anyone's interested) the noise of the thing still puts a big smile on my face. In fact I've recently noticed something new; usually going from 3rd to 4th at full chat I'm now getting a nice 'POP' between gears. I'm on a Loba pump now so the extra grunt might be something to do with it. But whatever, it's mega. And I know it'll handle anything a k04 can throw at it when I go down that road. You get what you pay for.
IF I ever had to buy a System for my ED30 it would be a BCS for my car, No question.
Post by: AJP on October 29, 2016, 01:43:35 pm
If you ever feel the urge for the full fat 2+ setup then you can't do much better. I'm sure one day you might be temptedHe's right you know.
All you guys umming and ahhing over downpipes, cats, whatever, just hold on until the new year (saving cash in the meantime) and I'm sure @Powervalve Nige (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=331) will oblige another group buy.
That's what I did, and I'm so damn happy I waited. Apart from the power and torque gains I posted above (I've got graphs to show this if anyone's interested) the noise of the thing still puts a big smile on my face. In fact I've recently noticed something new; usually going from 3rd to 4th at full chat I'm now getting a nice 'POP' between gears. I'm on a Loba pump now so the extra grunt might be something to do with it. But whatever, it's mega. And I know it'll handle anything a k04 can throw at it when I go down that road. You get what you pay for.
IF I ever had to buy a System for my ED30 it would be a BCS for my car, No question.
Post by: AJP on October 29, 2016, 01:46:49 pm
I'd be interested in a group buy for Powervalve.The last one was early this year, around Jan/Feb. Just PM Nige near the time; he was happy to get the last one going when I asked him. I assume he'll do a maximum of one a year, that seems to be the case. But you never know.
Post by: FJ1000 on October 29, 2016, 03:08:34 pm
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Post by: Powervalve Nige on October 29, 2016, 04:10:01 pm
Cheers
Nige
Post by: AJP on October 29, 2016, 04:49:03 pm
Best mod I've done.
Post by: Rippers on October 31, 2016, 09:03:36 am
Post by: pudding on October 31, 2016, 12:09:49 pm
Yeah I've got a downpipe + standard cat back on mine. I like it. Meatier at idle but OEM quiet every where else, which suits and old guffer like me.Really? I noticed an immediate improvement when I had a full Powervalve fitted (even made the clutch slip). That was on the existing Stage 1 R-Tech map. After Stage 2 it felt like I gained the same again. In fact, from memory it went like this:
I've noticed bugger all in terms of performance improvement though. Maybe my Stage 1 map needs tweaking a bit.
Stage 1 - 243bhp 296lb/ft
Stage 1 & exhaust - 260bhp 320lb/ft
Stage 2 & exhaust - 270bhp 345lb/ft
You should definitely feel some gain from the downpipe. As I understand it the vast majority of the restriction is from the downpipe/cat and not the catback section. But maybe that's not the case after all? What downpipe is it?
It pulls a bit more vigorously to the redline than it used to, but everywhere else, I'm not really detecting much of a change. I think the map probably needs a tweak to be honest!
The factory DP is awful! Removing the cat material is only a third of it's problems! I'm amazed Edition 30s make 300hp with that thing!
Post by: absolute on November 01, 2016, 11:51:56 am
Interested in knowing what options are available.
Post by: absolute on November 03, 2016, 12:07:14 pm
Do you mind writing a small bit about it, pros cons etc
Post by: GTIEagles on November 03, 2016, 12:44:34 pm
Post by: AJP on November 03, 2016, 03:30:23 pm
@ajp what setup do you have?I've got a Powervalve (aka BCS) turbo back, valved, R32 style, with 'R' tips, sport front silencer, 200 cell cat:
Do you mind writing a small bit about it, pros cons etc
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fuploads.tapatalk-cdn.com%2F20161103%2Faccce187371dd6fb61c649f9ba72e32c.jpg&hash=655ff3e07a311ef6429eef164185e559db32c029)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fuploads.tapatalk-cdn.com%2F20161103%2F211babb44e91b82709c21fcaaac194bb.jpg&hash=43b4d4b5b346e8a9e55ac0b7cfc7e393127eed6b)
I had it fitted around February this year after getting the group buy going. I did lots of reading up before I made the decision and the more I researched things the more it stacked up in favour of BCS. One thing I kept hearing about 'another brand' was that some parts of the systems weren't stainless. And then the idea of an exhaust being quiet off boost and mad on boost appealed to me. I'm in my 30s, and it's a road car.
I'll list pros and cons rather than rambling. I may miss some stuff out but if you search some of my past posts I'm sure I've said plenty about it before.
Pros:
It's genuinely subtle and mature sounding off boost. If I'm in a situation where I don't want to draw attention to myself it's fine. I'd say off boost it's a touch louder than stock and a fair bit deeper, without sounding too boomy. It's a 'warm' tone (if you're into music in any way you'll know what I mean). If you lift off from partial throttle at low-mids revs it makes all sorts of lovely burbles and grumbles, but again in a good way. It's tasteful.
On boost and on full chat it's loud, and really howls. It's a noise I like to hear though; if it was loud and a crap tone it would have got on my t*ts by now, but it really is a gorgeous sound. I've run the exhaust on Stage 1, Stage 2, and Stage 2 with an uprated fuel pump, and every time the power has increased it seems to have brought a new characteristic out of the exhaust. Most recently I've noticed a nice pop between gear changes when I'm giving it the beans. I've actually removed my parcel shelf so I can hear more of the exhaust.
The 'R' tips follow the angle of the exhaust cutouts of an R32 rear bumper perfectly. It's a small detail but makes a huge difference. You can spec the more traditional R32 style tips which are slashed at a different angle (15 deg rather than 35), but for me the R tips look spot on.
Power and torque. As my earlier post explained, it just works. Massive increases across the revs. As soon as I set off home after having it fitted I noticed the turbo spooling earlier and the boost hitting harder. That was still on the Stage 1 map. My clutch started slipping before I'd even gone to Stage 2. It feels like getting a mini-remap.
Sport cat handles emissions with ease. Can't remember if it's in this thread or another but I posted up the emissions sheet from my last MOT.
3" all the way from turbo to just before the tailpipes. Some other systems go to 2.75" after the downpipe. I'm not in a position to categorically say what's better, but the power increase speaks for itself. The R32 style system in particular was apparently in development for 3 years, so in terms of flow and performance I'd say things are pretty much optimal.
No apparent disadvantage to opting for a the sport cat version rather than the decat version at k03 and k04 levels. I've researched lots of dyno graphs and I'm yet to see any evidence that either the sport cat or decat is any better than the other. The cat is made 'oversized' to ensure it flows as well as the decat.
Cons:
None really.
Some have argued that is at the higher end of things price wise. But it's not expensive for what it actually is. Compare it to any other variable-tone exhausts of the same quality and it's very good value. In fact, I can't think of any comparable exhausts. For me it's worth every penny and the best mod I've done. Powervalve will always be doing at least one group buy a year, and of course they're doing group buy prices on Black Friday this year.
Final note: I'm well aware that I can sound a bit of a fan boy when it comes to Powervalve. I can assure you I'm not getting paid for any stealth marketing. Although Nige, if you're reading this, giz a job! Joking aside, it's simply a damn good bit of kit and I'll sing the praises of any mod I feel is up to scratch, just the same R-Tech maps, H&R springs, the list goes on. I've had Milltek exhausts, Cobra, and so on, so I think I'm in a fair position to judge. If it was a sh*t exhaust I'd tell you. If it had faults I'd tell you. Bottom line - it's pure quality.
Post by: AJP on November 03, 2016, 03:36:08 pm
Post by: pudding on November 03, 2016, 04:21:25 pm
I don't mind a bit of extra noise but I really detest drone, and by the sounds of it, this system is free of it.
And your like looks bloody nice to boot!
Post by: AJP on November 03, 2016, 05:00:00 pm
It doesn't read as anything other than an impartial and detailed review mate. It's certainly a contender for a replacement when my OEM one eventually dies!Thanks mate.
I don't mind a bit of extra noise but I really detest drone, and by the sounds of it, this system is free of it.
And your like looks bloody nice to boot!
You can make it even more refined with the larger 'Prestige' front silencer. I did consider this myself but I'm happy I went with the Sport silencer. Like I said, it's a really nice sound, and to me it gets better the more power you're running.
I genuinely think it's the best mod I've done. Lots of people say a remap is the best mod they've done, but I don't really class the map as a mod in the same way, as for me the map is always changing as I uprate the hardware and it's only ever facilitating a particular hardware setup. Remap a car with a bad exhaust and the resulting map will never be as good as it would be with a good exhaust. The map reflects the hardware.
As a physical upgrade it's as good as it gets. However, I may be forced to review that when it's time for a k04
Post by: pudding on November 04, 2016, 10:01:00 am
It doesn't read as anything other than an impartial and detailed review mate. It's certainly a contender for a replacement when my OEM one eventually dies!Thanks mate.
I don't mind a bit of extra noise but I really detest drone, and by the sounds of it, this system is free of it.
And your like looks bloody nice to boot!
You can make it even more refined with the larger 'Prestige' front silencer. I did consider this myself but I'm happy I went with the Sport silencer. Like I said, it's a really nice sound, and to me it gets better the more power you're running.
I genuinely think it's the best mod I've done. Lots of people say a remap is the best mod they've done, but I don't really class the map as a mod in the same way, as for me the map is always changing as I uprate the hardware and it's only ever facilitating a particular hardware setup. Remap a car with a bad exhaust and the resulting map will never be as good as it would be with a good exhaust. The map reflects the hardware.
As a physical upgrade it's as good as it gets. However, I may be forced to review that when it's time for a k04
I meant to say your car looks nice! Had a bit of keyboard moment there!
The prestige package sounds more like me. Do you have to have the power valve thing? I'm not really into all that, just a basic exhaust would do me :smiley:
You're all set for captain KO4 then mate! Got the exhaust flow, got the fuel flow.....just need the snail now :happy2:
Post by: AJP on November 04, 2016, 10:14:09 am
You can have either Prestige or Sport with or without the valve. Without the valve is a bit less money. I went for the valved version. I'm not sure how loud or quiet one of their non-valved systems is so it's probably a good idea to get a ride in a car with the setup you think you'd like to make sure.It doesn't read as anything other than an impartial and detailed review mate. It's certainly a contender for a replacement when my OEM one eventually dies!Thanks mate.
I don't mind a bit of extra noise but I really detest drone, and by the sounds of it, this system is free of it.
And your like looks bloody nice to boot!
You can make it even more refined with the larger 'Prestige' front silencer. I did consider this myself but I'm happy I went with the Sport silencer. Like I said, it's a really nice sound, and to me it gets better the more power you're running.
I genuinely think it's the best mod I've done. Lots of people say a remap is the best mod they've done, but I don't really class the map as a mod in the same way, as for me the map is always changing as I uprate the hardware and it's only ever facilitating a particular hardware setup. Remap a car with a bad exhaust and the resulting map will never be as good as it would be with a good exhaust. The map reflects the hardware.
As a physical upgrade it's as good as it gets. However, I may be forced to review that when it's time for a k04
I meant to say your car looks nice! Had a bit of keyboard moment there!
The prestige package sounds more like me. Do you have to have the power valve thing? I'm not really into all that, just a basic exhaust would do me :smiley:
You're all set for captain KO4 then mate! Got the exhaust flow, got the fuel flow.....just need the snail now :happy2:
And cheers, I'm quite happy with how it's looking now. Just need a few extra bits like R32/ed30 rear lights, xenons etc.
As for the k04, yes I'm pretty much there. I've got some mk7 Clubsport/PP (same as mk7 R) calipers to go on soon, and I need to decide on an intercooler upgrade (probably just S3) and I'll be ready. My to-do list never seems to get any smaller though!
Post by: FJ1000 on November 04, 2016, 11:01:14 am
)Sent from my iPhone using Tapatalk
Post by: absolute on November 04, 2016, 10:05:45 pm
With them being so close I'm going to have to give it a go I think.
I want something quite stock, but thinking with the GTI setup it might be a bit quieter than your R32 setup @AJP (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11926)?
Post by: AJP on November 05, 2016, 04:44:55 pm
@AJP (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11926) - thanks mate, really appreciate you taking the time to write that up - it's invaluable.When you say stock, if you mean stock sounding then the bigger front silencer would probably suit you better.
With them being so close I'm going to have to give it a go I think.
I want something quite stock, but thinking with the GTI setup it might be a bit quieter than your R32 setup @AJP (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11926)?
My car is still a GTI by the way, it's just an R32 rear bumper and R32 'style' exhaust. It's no louder than the equivalent exhaust with the twin side exit (GTI style) to my knowledge.
You should really try and listen to a Powervalve in the flesh and decide whether you'd prefer it quiter/louder etc. What I find quiet another person might find a bit loud.
Post by: bluo on November 05, 2016, 08:16:28 pm
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fuploads.tapatalk-cdn.com%2F20161105%2F288b439a9a45620eee8b449f440d9b45.jpg&hash=d270d9023bf4ae5296f234d4d8affb7e750cb33c)
If you're going K04 I've got a one and S3 injectors and BSH engine mounts if interested PM me.
Post by: absolute on November 07, 2016, 12:07:55 pm
@AJP (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11926) - thanks mate, really appreciate you taking the time to write that up - it's invaluable.When you say stock, if you mean stock sounding then the bigger front silencer would probably suit you better.
With them being so close I'm going to have to give it a go I think.
I want something quite stock, but thinking with the GTI setup it might be a bit quieter than your R32 setup @AJP (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11926)?
My car is still a GTI by the way, it's just an R32 rear bumper and R32 'style' exhaust. It's no louder than the equivalent exhaust with the twin side exit (GTI style) to my knowledge.
You should really try and listen to a Powervalve in the flesh and decide whether you'd prefer it quiter/louder etc. What I find quiet another person might find a bit loud.
That's true. I might just pop over there and see what's what since it's so close.
Sometimes it's kinda difficult to tell with videos etc :)
Post by: absolute on December 10, 2016, 03:06:25 pm
f*cking immense to be honest, love how subtle it is off boost but comes alive on the throttle. I was really worried when choosing a system it'd sound like a vauxhall nova. Not specifically Powervalve, just had some pretty droney ones in the past.
I had nothing to worry about at all. I was pretty speechless during the test drive, the co-owner Dale (I think) was so full of knowledge, I just soaked it all in.
Thanks for the recommendation, so happy!
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi.imgur.com%2F9zlWjyX.jpg&hash=8f52601ad8a2e95c0fb13095fe5522f928ee7c45)
Post by: AJP on December 10, 2016, 03:10:03 pm
Post by: spwd on December 11, 2016, 01:05:55 am
So, this is a bit left-field, but someone's got to try out JC Weldfab in Wellingborough for a GTi exhaust!
They're a welding specialist and make some incredible stuff in there; exhausts, roll cages, intercoolers, even furniture...the quality of work is exemplary, really nice guys, and they have extensive dealings with motorsport (inc F1).
Here's the system they made for my RS:
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fuploads.tapatalk-cdn.com%2F20161011%2Fd55fa85ff518a4b5cb02b4495e212667.jpg&hash=1ef8d0cef91bdf3b98607659ac71d8b7c4fbbf3a)
200 cell sport cats, fully mandrel bent, exhaust valves from a Bentley.
And it sounds amazing!
I went back there for an ali undertray too, again brilliant job.
They priced up a golf GTi cat-back exhaust for me at around £600; however problem for me is mainly logistics. My wife uses the golf everyday, and JCWF will need it for a few days.
It'd be great if someone tried it out and reported back - I'm sure they wouldn't be disappointed.
Sent from my iPhone using Tapatalk
Holy sh*t balls that sounds amazing! :drool: :drool: