MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Performance Modifications => Topic started by: ashw831 on November 05, 2012, 02:37:54 pm

Title: Decat fitted.
Post by: ashw831 on November 05, 2012, 02:37:54 pm
I have just fitted a Decat to the standard system, and my EML light has just come on. I think my second Lambda sensor is knocking, if I just take it out and disconnect it, will it do anything different to what it is doing now?
Title: Re: Decat fitted.
Post by: PDT on November 05, 2012, 02:56:58 pm
You will need your 2nd lambda mapping out, to give you an idea of costs we charge £50 for this or free as part of a stg2 map.
Title: Re: Decat fitted.
Post by: ashw831 on November 05, 2012, 07:50:29 pm
You will need your 2nd lambda mapping out, to give you an idea of costs we charge £50 for this or free as part of a stg2 map.

That's what I ment mate.. Seen as it gets mapped out anyway, if I just disconnected it now before I get it mapped would it have any other effects to the car?
Title: Re: Decat fitted.
Post by: dan1985 on November 05, 2012, 08:20:54 pm
when my engine management light came on after decat it shot flames out of the exhaust on overrun and mpg dropped by 13mpg.
Title: Re: Decat fitted.
Post by: PDT on November 06, 2012, 02:43:12 am
You will need your 2nd lambda mapping out, to give you an idea of costs we charge £50 for this or free as part of a stg2 map.

That's what I ment mate.. Seen as it gets mapped out anyway, if I just disconnected it now before I get it mapped would it have any other effects to the car?


Leave it connected.
Title: Re: Decat fitted.
Post by: ashw831 on November 06, 2012, 08:50:49 am
when my engine management light came on after decat it shot flames out of the exhaust on overrun and mpg dropped by 13mpg.

Great.. looks like i need to get a stage 2 map ASAP then. 
Will my standard clutch be able to handle the extra power? I don't tend to drive that fast very often , just the occasional time when I get bored, so wouldn't be putting too much extra torque through it.
Title: Re: Decat fitted.
Post by: dan1985 on November 06, 2012, 09:37:21 am
^^^
That was with a stage 2 revo map Dave flashed to the car. Rear lamda sensors in bank 1 & 2 below efficiency.
Title: Re: Decat fitted.
Post by: ashw831 on November 06, 2012, 12:52:27 pm
^^^
That was with a stage 2 revo map Dave flashed to the car. Rear lamda sensors in bank 1 & 2 below efficiency.

So if I get a custom code map with the second sensor mapped out, it will all be ok wont it?
I haven't noticed a big drop in mpg yet though..
Title: Re: Decat fitted.
Post by: AndrewJB on November 06, 2012, 08:56:15 pm
^^^
That was with a stage 2 revo map Dave flashed to the car. Rear lamda sensors in bank 1 & 2 below efficiency.

So if I get a custom code map with the second sensor mapped out, it will all be ok wont it?
I haven't noticed a big drop in mpg yet though..

Dont get Custom Code  :sick: There's nothing Custom about it at all

APR,REVO,R-Tech are the way forward
Title: Re: Decat fitted.
Post by: ashw831 on November 06, 2012, 09:49:31 pm
^^^
That was with a stage 2 revo map Dave flashed to the car. Rear lamda sensors in bank 1 & 2 below efficiency.

So if I get a custom code map with the second sensor mapped out, it will all be ok wont it?
I haven't noticed a big drop in mpg yet though..

Dont get Custom Code  :sick: There's nothing Custom about it at all



APR,REVO,R-Tech are the way forward
^^^
That was with a stage 2 revo map Dave flashed to the car. Rear lamda sensors in bank 1 & 2 below efficiency.

So if I get a custom code map with the second sensor mapped out, it will all be ok wont it?
I haven't noticed a big drop in mpg yet though..

Dont get Custom Code  :sick: There's nothing Custom about it at all

APR,REVO,R-Tech are the way forward
^^^
That was with a stage 2 revo map Dave flashed to the car. Rear lamda sensors in bank 1 & 2 below efficiency.

So if I get a custom code map with the second sensor mapped out, it will all be ok wont it?
I haven't noticed a big drop in mpg yet though..

Dont get Custom Code  :sick: There's nothing Custom about it at all

APR,REVO,R-Tech are the way forward

I didn't mean the company custom code, what i ment was a stage 2 (rtec) map. Rtec are looking like the best bet to me, closest most reputable people I recon!! And ones of the cheapest stage 2 maps I have found too.
Title: Re: Decat fitted.
Post by: AndrewJB on November 06, 2012, 10:04:58 pm
Haha good

Ive not had any dealings with Niki but from what ive read and seen allover the internet hes certainly a master of his trade
Title: Re: Decat fitted.
Post by: 55golf on November 07, 2012, 05:15:00 pm
I have just fitted a Decat to the standard system, and my EML light has just come on. I think my second Lambda sensor is knocking, if I just take it out and disconnect it, will it do anything different to what it is doing now?

what make decat was it
Title: Re: Decat fitted.
Post by: ashw831 on November 07, 2012, 06:05:04 pm
eBay special mate:
http://item.mobileweb.ebay.co.uk/viewitem?itemId=140477512918&index=2&nav=SEARCH&nid=22181138221

I don't think I have fitted it properly as I fitted it with only one side of the car in the air... :ashamed:

Is starting to sound nice now though :-)
Title: Re: Decat fitted.
Post by: 55golf on November 07, 2012, 07:54:33 pm
did everthing come with it to attach to exhaust
Title: Re: Decat fitted.
Post by: ashw831 on November 08, 2012, 04:18:14 pm
did everthing come with it to attach to exhaust

Yes they sent me everything, new turbo gasket, and a big clamp as it is split in 2 pieces. The  it just slots in to the slieve for the standard system. Welds look good too, really pleased with it tbh, considering I paid £92 for it including next day special delivery.

Comparison pic for you:
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fii120%2Fashw831%2F0202460F-C3AD-440B-978A-A7653B224C2B-4489-000003DEB0B5CC16.jpg&hash=cc2fd44b6a275b19ffbb198d151d5a663bce9e15)
Title: Re: Decat fitted.
Post by: 55golf on November 09, 2012, 06:58:02 pm
how did u get it for 92 quid
Title: Re: Decat fitted.
Post by: ashw831 on November 09, 2012, 07:24:05 pm
how did u get it for 92 quid

They put them up for auction continuously. Just kept my eye out and snuck in a cheeky bid. I have seen them go fr under £80 before.

One on there now;
http://www.ebay.co.uk/itm/BRAND-NEW-VW-GOLF-MK5-EXHAUST-DOWN-PIPE-DECAT-3-/310496533732?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item484b091ce4&_uhb=1
They must have got annoyed with how cheap they where going for so the starting bid is higher.. Mine started at 49.99.
Title: Re: Decat fitted.
Post by: ashw831 on November 11, 2012, 05:01:06 pm
If any one is goin to get one of these decats (I highly recommend them  :happy2:) before fitting trim down the two straight mounts as this was the cause of my knocking.
I took them back to behind the bulge for the rubber mounts. It doesn't need them to be that long as it still all sits perfect BT now I can just hear the awesome noises it makes and no knocking at all!
Title: Re: Decat fitted.
Post by: NikB on November 13, 2012, 02:29:01 pm
anyone tried one of these?

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=360506753036&ssPageName=ADME:X:RTQ:GB:1123
Title: Re: Decat fitted.
Post by: ashw831 on November 14, 2012, 08:29:30 am
anyone tried one of these?

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=360506753036&ssPageName=ADME:X:RTQ:GB:1123

There was a thread on this a whiles back, but I don't know if anyone has actually bought and fitted one though. Be nice to hear if some one has...