Hi all, this is my first post on the forum! It's a pleasure to be here and definitely a massive amount of knowledge.
I've spent many hours looking through existing threads but none of the solutions posted have worked on my car.
The problem is I've got my car tuned from 218 hp to ~270hp. The power increase within the 2000-3500rpm is incredible and I'm very happy with it, BUT..
The car won't rev past 3900-4000 rpm regardless of the gear (keeping it in M2 i can cruise at 3900rpm with my gas pedal to the floor). In neutral it revs to about 4200. Before the remap and in the DS mode, it pulled strong all the way to 4900 and then shifted.
Before the remap car had only one error code (no gearbox errors etc):
4587 - fuel filter (I think this refers to the heating element and not the filter itself?)
After the remap (and bouncing off the 4000rpm "redline") two additional codes pop up (the codes don't pop up during light driving from 1500-3000 rpm):
4B11 - engine-roughness regulator
4863 - driving speed regulation (with this error present my cruise control no longer works)
Also noteworthy - when the car sits at the 4000rpm the MPG needle sits at the middle (~30mpg), until that speed it goes all the way to the right on the heavy acceleration. This might be of relevance.
Another thing I've noticed is when the car is in neutral and I try to keep the RPMs steady at ~1200 - it bounces slightly from about 1100-1200. I don't know if that was the case before the remap.
Things I've tried:
Resetting adaptation values in INPA - no difference
Unplugging the MAF - the only difference is a check engine light and a slight power decrease on low RPM
Replacing the air filter - MPG slightly better, no change to power. There were dried leaves in the air filter housing - removed of course.
Looking at INPA live data - maximum injector correction is about -1.5 (cyl6), so should still be fine
Hose inspection - No visible cracks on vacuum or air hoses, although the pipe that goes from the intercooler to the intake manifolds seems a bit greasy.
Here are the relevant screens from INPA live data (at idle) : https://imgur.com/a/zmVvL
What could be causing those problems? Should I go back to the stock map?
Thank you!!
Hello
the problem is in the DDE Software, if u have a MPPS to flash and read by ur self i can help u to fix it and show u where the problem was.
DTC 4587 is not the heat thing on the filter, this DTC means the Pump have struggle to get enough fuel to generate the target rail pressure
3 possible Reasons :
1. The Filter is old and u need to change him ( i change the Fuel Filter every year )
2. The HPFP is not in good condition but i think its a cheap tune and the Duration map is strong decalibrated,
so the Pump cannot make the railpressure for this long Injecotr opening times and tha car get into Limp Mode)
And the other DTC should be too from the bad Mode of ur engine software....
post ur Original file and ur Mode file if u have both
Last edited by Rsrider; 05-06-2018 at 01:25 PM.
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