MK5 Golf GTI
All Things Mk5 => Mk5 General Area => Topic started by: al200 on November 09, 2014, 12:50:52 am
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I recently got my car remapped with a Quantum map. I know what people will say about deviating from revo, rtec etc but I was attracted by the price and how close the tuner was.
Anyway, when I first got it mapped the car went into limp mode a few times. Always at very low revs and in a high gear. No lights on dash, just a loss of power and everything was fine again with an ignition cycle. I took it back and it gave an over boost code. The guy mentioned that he thinks it is a hardware issue and mentioned possible issues with the actuator along with the n75 valve but reluctantly offered to lower the boost on the map to see if it would make a difference. I've had the new map 2 weeks and have had limp mode once since.
Has any one else experienced anything similar or have you any idea what could cause this.
To add to this my mpg seems to have dropped by about 3-4 mpg since I had it done. I thought it would improve mpg.
The code read:
P0234
- charge pressure control; regulating limit surpassed.
- permanent
I appreciate any advice!
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If the issue started immediately after the remap then there's a good chance that either there was an underlying fault with the car which the remap has highlighted, or more likely, the map is crap. Have them put it back to stock and see if problem goes away..
What is the car boosting at, actual and requested.. ?
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Sorry matey, but this is a prime example of why people on the forum recommend the brands / tuners you have listed. I've lost count of how many times I've suggested someone doesn't get drawn in by price or location when they are wanting to tune their pride & joy :sad1:
Surely you would want someone who actually understands the TFSI? Did they give your car a health check before? Or did they just upload the map and send you on your way?
I think if the remap is throwing the car into limp mode then it's clearly trying to ask too much of the car. If the tuner still can't fix it (and was reluctant to) then I'd suggest you either get the tuner to flash it back to stock, and push for a refund, or you take it to a reputable place and get a proper map :happy2:
I saw the exact same problem you have caused by a cheap remap
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Thanks for the reply. I will be going back to stock until the issue is identified. I just figured that as the overboost condition appears when at low revs and high gears it may be a hardware problem. I assume the higher the revs the higher the boost and it hasnt happened high in the rev range. I'm no expert so please correct me if im wrong.
I don't know any info on the boost levels as no logs were taken after the map was put on.
Does anyone know of any particular hardware issues that would cause overboost at low revs and high gears?
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When i say reluctant i meant reluctant to make changes without looking into any under lying hardware problems. All in, the company have been very good in terms of service and support.
I have a local revo dealer and wanted to go the revo route but due to the cost it was this or nothing at all.
So i take it that most would look to the map as the main issue rather than something else.
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http://wiki.ross-tech.com/wiki/index.php/16618/P0234/000564
Check your pipe work first, could've blown a pipe off.
Who mapped it?
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Thanks for the link. Pipe work is fine as far as i can tell. My local garage will look into it this week.
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Hi,
Did you have any luck finding the error? I'm also a stage 1 Quantum and have the same error. I can trigger it quite easily in 4th, by stomping on the gas pedal at ~3000 RPM.
Alex
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Sounds like a sh*tty map....... :chicken: :chicken:
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Its a common issues with tfsi maps from Quantum I have had a good 10+ cars in with the same issues. Its because they use driver pack maps from alientech and dimsport which have 100s of map addressees missing which basically just allows them to wind up the boost. If you google remaps you will find every tom dick and harry trying to become tuners based on the alientech and dimsport systems which allows tuner to go "lets add 20% more boost it should feel quicker" This allows them to offer tuning for car they have never seen before but give them the option to wind up the power to make a quicker earner. IMHO a tuner who says they can tune every car going from a mini to transit van, of a jetski to volvo lorry... avoid them. you will find the only thing going to them is the price nothing more. Go find a local tuner who is a specialist in xyz engines and pay that little extra.
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Couldn't agree more! Having this exact discussion on facebook... went through the guys photos.... using a ktag remapper powered by....alientech hahahahah
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Okay, so my car had the same problems, but managed to get it sorted. I took it to a rolling road where they put it on the dyno and analyzed the map. I've attached a screenshot of the dyno run that shows a missfire ~5300. Apparently, besides the problems mentioned in the thread, the map also requests a very very very rich mixture (0.6 lambda). As you all probably know, that is very dangerous to the engine, so honestly, my only advice right now to those who still have this map on their cars: get it changed! Also, what I'm saying here is very easy to prove using a VCDS (VAG-COM) log that plots 'Target lambda' against RPM at a high engine load.
This shows that the Quantum Tuning stage 1 map for the 2.0 TFSI is not only bad for performance, but has the potential to seriously damage your engine's hardware.
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdrive.google.com%2Fuc%3Fexport%3Dview%26amp%3Bid%3D0B7MXqEtoH8k4SmNkdVctOVk5TG8&hash=cccdc1547c9e75d593ab387a51670df96ccc905a)
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Standard for me :congrats: :jumpmove:
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I think the moral of the story here is when offered a choice of Quantum remap or a selection of 6 inch nails through your todger take the nail option every time. :chicken:
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Not just Quantum, any tuning company that offer to tune every type of vehicle as Niki described above, i've seen it first hand with a local 'tuning company' (i use the word tuning very loosely here). They get a map pack supplied and with little knowledge just increase the boost values and fiddle with the fuelling and do very little else. No understanding, no data logging, just fool everyone with their advertising that they offer custom mapping for every type of vehicle.
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I've been running a quantum map from a local very trust worthy garage for nearly a year now with no problems at all. Boosts very smoothly throughout the Rev range and made a massive difference to how the car drove. I'm planning on going stage 2 this year, but will be going to rtech for that
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Any chance you can do a VAG COM log with a WOT pull in 3rd or 4th?
Alex
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:jumpmove: You Da Man Niki Bro :jumpmove:
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fstatics.vayagif.com%2Fgifs%2F2014%2F06%2FGIF_196222_they_see_me_rollin_they_hatin.gif&hash=eca31b9ccb47bc9ce3568aa6d0edb2b0465e6a78)
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I had gone back to the 'tuner' and they fiddled with the map (or they emailed it to someone to do it). Think they reduced the boost. seemed to work at first but the over boost issue still came back. In the end I got a refund and had the map taken off. I ended up driving 150 miles to R-tech for a stage 1 and no such problems now. made 250bhp and 310 torques with no mods. After 2 months of the Rtec I still can't wait to wake up in the morning to drive to work.
I also notice a big difference in the way the Rtech map delivers it's power - it's just more controllable and almost feels like the car left the factory like this (can still be manic when you want). No surges in torque or anything like that, just smooth power up to the red line.
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I'm glad in the end you got it sorted. There's a few tuners around here. Seems to be more and more that can map anything. I stuck to my knowledge and paid for the Revo. Previous experience with my old car, didn't want anything else for the 2nd time round on my Golf.
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Go and get your wastegate tension checked! Adjustments go out with age and if that happens it won't allow a decent remap to do its work properly. Too much blame on remaps and not enough on wear and tear! Wastegate tension is adjustable for a reason.... It needs calibration just like other components subject to wear, tear and fatigue.
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Go and get your wastegate tension checked! Adjustments go out with age and if that happens it won't allow a decent remap to do its work properly. Too much blame on remaps and not enough on wear and tear! Wastegate tension is adjustable for a reason.... It needs calibration just like other
components subject to wear, tear and fatigue.
@petewood (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11967) your missing the rest of the story. . .
He had the map taken off and the car mapped at R-Tech and all is well now :happy2:
& welcome to the forum :drinking:
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Go and get your wastegate tension checked! Adjustments go out with age and if that happens it won't allow a decent remap to do its work properly. Too much blame on remaps and not enough on wear and tear! Wastegate tension is adjustable for a reason.... It needs calibration just like other components subject to wear, tear and fatigue.
That is what the ecu n75 pid contol map is for.... if someone is saying actuator is playing up causing the boost delivery to be sh*t and not making the map work is 1 flashing a generic map 2 a bad one at that and 3 just winding up the boost request maps expecting the stock n75 maps to do the job.. The only time an actuator tweak is needed is when the spring tension wont allow the peak power, not to fix limp mode or running issues. ie a stage2+ car at 270hp and n75 is pegged at 100% across the top end, but that tuner knows the potential of the setup should be closer to 280-285hp, so 5-6mm of pre load can be added and the low down mid range n75 maps changed to keep the peak boost in check and n95 back to 90-94%