Hi all

 

I'm having a bit of a drama with my Stage 2 TSI VRS FL.

 

It's just been in for a turbo back custom stainless full system with 200cel from a well respected fabricator.

 

Beforehand...

 

I've been running on Stage 2 Bluefin with main cat removed (pre cat still in place and it still passed MOT emissions lol)

Ramair air filter in the oe airbox.

And all was well. 

 

Since the exhaust fitting the car is much more responsive low down but when I get up to 4.5k to 5k on full throttle it starts missing /sputtering.

 

 

If I put it back to standard map it's fine.

I'm not getting any fault codes up on VCDS on both maps..

 

Conculsions ..

I'm thinking maybe 

The extra bit of exhaust flow 

Boost creep. How goods the wastegate standards on these things ?

 

Checking through measuring blocks on VCDS i noticed that specified boost was 360 and actual boost was 1088 idling which I though a bit strange.

 

I'm just wondering if anyone else with a turbo back system came across any issues similar.

 

Generally from my experience with mapping, replacing the cat with a 200 cell or a complete decat  doesn’t need a remap to account for it. When you say spluttering, do you mean fuelling issues, is your AFR a good value at that rpm range ? 

Going to do some logging tomorrow pal.

 

 

Car was fine until the exhaust was changed the car is noticeably more powerful because it now loses traction in 3rd spooling up on full throttle which it didn't with the standard exhaust with the cat removed ..

 

Once it gets up to 4.5k on full throttle it starts misfiring.if I slowly accelerate it is fine all the way to the rev limiter.

 

I'm pretty sure it will be a airflow issue.I think a carbon clean out of the intake is well over due tbh but I don't believe it's related to this issue..

 

Regards

 

 

 

Have the spark plugs been out and checked recently or were they replaced and what have you fitted, and what ignition coils?

1 month old pal ..bosch iridium 

Nothing coming up on misfire monitoring on any cylinder on VCDS.

Old plugs was in good nick one was slightly lighter (lean) but not a drama.

 

Bosch OE coilpacks cannot remember the revision off the top of my head.

Replaced all 4 about 2 year ago from TPS.

Misfires need enough in a cycle to log.

Maybe those coils are a little suspect, but not as suspect as the Bluefin Mapping.

 Today my life's got even worse.

 

Now im struggling to clear fault codes and VC keeps hanging due to a ECU error on several modules after removing the battery terminal for a hour.FFS

 

Looking at the log.It is clear to see the misfiring but im more concerned to wtf is the boost doing ..confused.com

 

Coincidentally there was no misfiring on the standard map or if there was I didn't notice it driving or VC didn't detect any.

 

I've emailed Superchips to try my previous stage 2 map(i asked for a slightly more aggressive map after a few week) and also if  i can try the stage 1 map. so i will update when I have the results.

I never had any issues with Superchips in the last 25 years of using them from my RS turbo to my 2nd VRS so I don't need the Bluefins mapping **** brigade piping in.

 

 

Stage 2 has been on my car faultlessly for 4 year. (even the wife loves it) previous to that

stage 1 for 3 year   (its good just missing that " **** this is really quick") but ive done 161mph on it.

both faultless IMHO for a 40+ year old.

 

if any company out there thinks their generic maps are better prove it.

 

 

 

 

 

LOG-01-115-014-015.CSV

Well turns out after going on the 2 poster that the well rated fabricator actually didn't fit a rear Lambda sensor to the exhaust..And removed the sensor wiring....

 

Some fecking highly rated outfit that is.

 

"Bring it back we will sort it ..no fecking **** you will Sherlock"

 

All the diagnostic issues are caused by remapping with my Blufin and takes 5 to 10 cycles to clear themselves. 

 

Superchips support as been excellent during this problem with one to support by someone that actually knows what there talking about..

Even offer to wind the boost down on my stage 2 map slightly but advised me to find the problem instead of losing power.

Edited 31 October, 20187 yr by gathy

3 minutes ago, gathy said:

Well turns out after going on the 2 poster that the well rated fabricator actually didn't fit a rear Lambda sensor to the exhaust..And removed the sensor wiring....

 

Some fecking highly rated outfit that is.

 

"Bring it back we will sort it ..no fecking **** you will Sherlock"

Glad you found the problem! much better that its a simple problem, although a silly mistake on their end :P