Fuel System Help

[turbo90gsx]

Well, after a few logs with DSMLink and messing around with ALOT of other things I am begining to come to a conculuision for why my car runs like shit under boost. Right as I start comming into heavy boost all is well, but as hit full boost it is bogging down and runs very strange. My profile is updated with my mods, most specificly my fuel mods. I still run the stock feed line with a stock filter. Once I reach full boost and it starts bogging down my AFR's shoot up to 13.0-leaner. No matter how much I add fuel under boost it still does the same thing with the same results. I've tried changing timming points to with no results. It seems like my fuel system is not flowing enough. Any sugestions? Thanks.

 

[snowborder714]

Boost leak test lately?

 

[super95awd]

Fuel pressure? I always see people putting their fuel pumps in and not getting the o-ring seated correctly. Sounds like what you are describing. Is the car slow to start?

 

[CanadianTSi]

Vacuum line pop off the FPR?

 

[oldman]

1. It's possible that your WB is off due to exhaust leaks, are you seeing knock? Pulled timing?

2. Have you calibrated your MAFT?

3. Have you done a boost leak test?

4. Did you Teflon the vacuum fitting and adjustment rod on your AFPR?

5. Have you done the static AFPR test to ensure that the 1:1 fuel : intake pressure ratio is being maintained?

 

[ImportModder]

I would check for boost leaks.