Whats wrong with my car now?

3-Serious · 03-12-2012, 10:01 AM

So since august I've been in and out of the shop replacing everything! lol And still cant get it right! My mods are in my sig. Also I have had my turbos replaced, injectors were replaced 2x, fuel pump, wastegate solenoid, spark plugs 2x, and had my valves walnut sell blasted. Now I just did some logs on saturday and previously thought I was having boged shifts due to the cars pick up taking time after shifts. So i turned on my NLS and the boost holds beautifully but it still took time for the car to gain pick up. Finally loged it and it seems to be a fuel problem? For some reason in 2nd gear and 3rd gear my Fuel Cor goes flat for the first 1000 rpms in each gear with fuel pressure droping? I sent in my logs to Vishnu but they take like a day or two to get back, which is understandable since they are very busy. But I was wondering if you guys had any ideas?

If you request to see logs let me know which channels you'd like to see, also I raised my OL up to 94, thinking the car wasn't getting enough fuel it helped a tiny bit. So I've left it like that and that's how my my recent logs were done.

JamesM3M5 · 03-12-2012, 05:01 PM

Maybe check/replace the LPFP and/or LP regulator/filter assembly? The driver's side of the tank has the regulator (5 bar/72psi) and filter built together, and the passenger side has the LPFP. If you're seeing HP rail pressure drops, it may be the LPFP not being able to keep up due to a faulty regulator, a clogged filter, or worn pump.

Regulator/filter: 16 14 7 163 296 $182 at Tischer
Pump: 16 14 7 163 298 $274 at Tischer

3-Serious · 03-12-2012, 09:32 PM

Quote:

Originally Posted by JamesM3M5

Maybe check/replace the LPFP and/or LP regulator/filter assembly? The driver's side of the tank has the regulator (5 bar/72psi) and filter built together, and the passenger side has the LPFP. If you're seeing HP rail pressure drops, it may be the LPFP not being able to keep up due to a faulty regulator, a clogged filter, or worn pump.

Regulator/filter: 16 14 7 163 296 $182 at Tischer
Pump: 16 14 7 163 298 $274 at Tischer

OK thank you, I will defiantly check into it and see how it goes!

03-12-2012, 10:01 AM	#1
3-Serious Lieutenant 45 Rep 473 Posts Drives: AP e92 335i Join Date: Dec 2008 Location: New york iTrader: (1)	Whats wrong with my car now? So since august I've been in and out of the shop replacing everything! lol And still cant get it right! My mods are in my sig. Also I have had my turbos replaced, injectors were replaced 2x, fuel pump, wastegate solenoid, spark plugs 2x, and had my valves walnut sell blasted. Now I just did some logs on saturday and previously thought I was having boged shifts due to the cars pick up taking time after shifts. So i turned on my NLS and the boost holds beautifully but it still took time for the car to gain pick up. Finally loged it and it seems to be a fuel problem? For some reason in 2nd gear and 3rd gear my Fuel Cor goes flat for the first 1000 rpms in each gear with fuel pressure droping? I sent in my logs to Vishnu but they take like a day or two to get back, which is understandable since they are very busy. But I was wondering if you guys had any ideas? If you request to see logs let me know which channels you'd like to see, also I raised my OL up to 94, thinking the car wasn't getting enough fuel it helped a tiny bit. So I've left it like that and that's how my my recent logs were done. __________________ Cobb JR Tune, HFS-4, DCI, AMS Intercooler, Vishnu CP, Forge DV's, AR DP's, RPI exhaust, AR OCC, BMW STS, Spec stage 3+ clutch, CDV delete, H&R Coil overs, Quaife LSD, DefiV Lock down kit, WOTbox. -SOLD
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03-12-2012, 05:01 PM	#2
JamesM3M5 Some dude 91 Rep 1,780 Posts Drives: E92 335i Join Date: Sep 2011 Location: Northern VA iTrader: (0)	Maybe check/replace the LPFP and/or LP regulator/filter assembly? The driver's side of the tank has the regulator (5 bar/72psi) and filter built together, and the passenger side has the LPFP. If you're seeing HP rail pressure drops, it may be the LPFP not being able to keep up due to a faulty regulator, a clogged filter, or worn pump. Regulator/filter: 16 14 7 163 296 $182 at Tischer Pump: 16 14 7 163 298 $274 at Tischer __________________ RRT E92 335i/6MT with stuff and things
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