How bad is it to go WOT my fuel pressure drops to 50 psi but the afr is still 11.5?

 

i think standard operating pressures should be around ~58 psi... as long as your AFR is okay, i would think its safe.

11.5 sounds about right for FI... IMO you should be fine.

would like to see it a bit higher at WOT though.

 

another question ... what your fuel setup?

looks like your a H/C with a supercharger? hopefully you are at least running a larger pump that can keep up.

what size/type pump are you running, and what size injectors?

 

stock pump 60#'s

 

justin said ur FP was falling fast.....

 

did justin break your tranny tell justin my truck died right after he left lol.

 

lol. No by no means did he do it. Just got it in there on friday. Valve body is way too aggresive. (vac modded)

 

If your AF ratio is fine then I wouldn't worry too much about it... but if you're still on the stock pump with a s/c... i'd upgrade it just for peace of mind...

 

Try removing the vacuum line attached to your FPR on the rail. See if it drops after doing that. should be around 58 removed at idol.

 

i cant understand why/how you would want to stay on a stock fuel pump with that many mods done?

i thought the stock pump was only good for around 400rwhp or so?