you need a gauge to find out what psi your fuel pump is running at. hell you could be running like 90psi and you have no idea of knowing.

 

I put the stock pump back in and it was having the same problem, I guess it wasnt the pump. turned out it was the o ring on one of my injectors that got fucked up and i was leaking pressure through the injector.. fixed now and it's running great.. i'll try the walbro again lateer and see if I can't get it to work. lol thanks for all the help.

 

probably still a good thing you went and put that plastic piece back so the O-ring seals

 

injectors will be fouled up pretty quickly just a heads up. also asap get an afpr to control that pump psi

 

I don't believe his stock regulator is broken?

 

Ive always been told you need an AFPR with the 255 as it overruns the stock regulator? Idk, I have the Aeromotive AFPR and 255 with no problems. But I know what FP I am running

 

That's what I thought, sorry for spreading misinformation dave. I wasn't saying it was his proplem, just figured he didn't have one, and I thought that the afpr was needed to control it properly.

 

check all your intercooler piping couplers. sounds like you may have blown a pipe off or nearly off.

 

shit, someone must have forgot to tell my beater. last time i went to hampton I got 28mpg on the highway with a stock reg and a 255. yea, there is overrun, but it's minimal and well within tuneability. It's only a couple PSI and only in vacuum. All the people that say it makes their car run way too rich would be surprised if they put a wideband on their car and did some tuning

 

its a common myth that you need an FPR with a 255.