Fuel Pump size??

[LarsD]

Mods in Sig. Went to the track, datalogged some of my runs with my TwEECer. Car runs super rich under 2K and starts leaning out above 3K. I was running with a base 10 degrees of timing. Anytime I tried to add any timing with the TwEECer it would start pinging like crazy. A guy at the track asked what size fuel pump I'm running, I don't know. He recommended a 255 even though I'm N/A. Said that he had a car that would lean out real bad with 24's, even on a 190 pump. I could have a stock pump for all I know, best run of the night was a [email protected].

L.D.

Edit FP set at 37-38 psi with the hose off.

 

[CRASH7772]

This might help with your question--> http://www.pro-flow.com/tech info/sizing.htm .
Most people say to run the 255lph because it's the same price as the 190lph. If your staying N/A you should be fine with a 190lph. Sounds like you might need some dyno time. I run quicker with less mods but I'm SD as well.