General > Turbo Tuning

Fueling help!

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Slow325isedan:
Hello, looking for some help here, its also a fuel issue,

setup is:
89 325i
Walbro 255 pump
stock FPR
42lb inj
draw through MAF

Tonight was the first night i tried to start the car after the turbo build and the car wont even consider starting unless the throttle is 100% open and when it does get started it is running so rich it wont idle, not sure what the cranking fuel map is suppose to look like but it just seem way loaded up when i do get it too fire, any help would be great! thanks guys

Candy4M3:
Did you make sure your turbo map is written on your war chip? If the ecu is running a n/a map, you will have crazy overfuel because the computer is providing the approperiate fuel for the standard injectors, our injectors are significantly larger.

Slow325isedan:
Ya I'm fairly positive it's running on the chip, ill drop the rev limit to 3k when I get home to make sure, that's the only way to check right? Other then that I can't figure it out, could you screen shot your "cranking fuel map for me?

Slow325isedan:
Actually it's only 4 values lol I suppose you could just tell me those, that would be a lot easier, originally the cam was 180 out, it was firing on the exhaust stroke, so I pulled the belt and fixed that now I'm at least getting it to fire, it's a mess lol but I'm sure will figure it out

Candy4M3:
My values probably will be different from yours as I have a 413 ecu. But merely for reference at 960 rpm I have 129, at 480 rpm 125. Adjust accordingly throughout the rev range. Be careful with the engine timing as our motors are interference engines  :o

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