Chip questions
#1
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Hey there I just recently got into a 85.5 2.5L NA and the previous owner had it chipped (he gave me the oem chip as well). As it is right now the car is running rich and I was wondering what I could do to solve this. I don't no much about the chip thats in there now but, am in the process of finding info. Would you guys recommend I keep the chip it has in there and try to fix the richness prob. or should I just put the oem chip back in?
#3
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Originally Posted by Calmchaos
I would say try it and see if it helps.
If it doesn't I would start looking at the Fuel Pressure Regulator (FPR)
GL.
If it doesn't I would start looking at the Fuel Pressure Regulator (FPR)
GL.
#6
Rainman
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AFM ![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
The big grey thing that is plugged into the left side of your airbox/filter. If you pull off the black plastic cover you will see a switch. This measures how much air is going past and tells the computer how much fuel to send to maintain a good air-fuel ratio (14:1 if I remember correctly). Yours may be on the fritz, causing your car to run rich. It may need to be cleaned or readjusted.
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
The big grey thing that is plugged into the left side of your airbox/filter. If you pull off the black plastic cover you will see a switch. This measures how much air is going past and tells the computer how much fuel to send to maintain a good air-fuel ratio (14:1 if I remember correctly). Yours may be on the fritz, causing your car to run rich. It may need to be cleaned or readjusted.
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#8
RL Community Team
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When I had rich running issues with my old 944, it was the fuel pressure regulator. But it was pretty bad - the engine would run very poorly when warm.