View Full Version : Fuel pressure with trimcal.

09-25-2006, 07:40 PM
I reposted this here : Hi what fuel pressure are trimcal users running? I have all the usual stuff- +40's, 3bar, 255 pump, afpr, etc (TII) and even at -5% fuel trim I'm way rich at WOT.I'm down to 37psi base fp and its still rich enough to cause a misfire at WOT. I have a blue light on my dawes device and the further I go down the better it runs. Fuel pressure at WOT is 55psi. Input? thanks, Chris.

12-13-2006, 02:54 PM
Hello Anybody Help! Tis Man

12-13-2006, 02:56 PM
This is something only the maker/FWDP can answer. Sounds like you selected a trim cal for a setup that doesnt require a trim cal????

12-14-2006, 09:57 AM
Hi, I run my trim cal fuel pressure @ stock. I will know if I am rich when I install my wide band next week. I get decent gas mileage and don't miss fire at WOT. You might need to have Cindy adjust your fuel tables.

12-14-2006, 12:37 PM
my AFPR is set right around 47psi if i'm not mistaken, and i'm a tad rich, but no misfires or anything. i get that tad sluggish feeling from too much fuel until she's at full boost. then it seems fine.

12-16-2006, 11:59 PM
FWD cals are known to be a bit rich sometimes. youll never know the correct a/f without a wideband. id either pony up the dough for a wideband or head to a local dyno to dial it in under WOT with fuel pressure or the trim settings. :)