Thread: Having a problem with a LS1

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I have a 36 chev with a 02 LS1 completely stock motor in it,, the ECM and engine wireing was reworked by Street & Performance;; it has a Tanks fuel tank with the in take fuel pump,,

the problem is They car has ran like a top eversince it was finished a few years ago,, not alot of miles, but ran good,

just recently it has been acting up hard to start, sputters and guits running, no power under throttle [ it won't hardly untrack itself,, ] runs really rich sometimes it runs pretty good then decides to act up again,, but now its decided to not run hardly at all,,

I checked the plugs,, look good ;; checked the fuel pressure,, at the fuel rail was 12 -15 # ? [I thought it was suspose to be higher, like 30 #] checked the wiring on the throttle body Ok, air temp sensor hooked up to K&N filter, maf was clean and wireing ok,,

I am definately not a fuel injection mechanic, or know much about them,, just a real PITA when they don't run right,,

I assume the reason it is running RICH has something wrong with the T-body or incoming air control..??????

Any ideas guys Please??? Thanks bill