Some days I can go out and my car will start and run perfect, others I will go out and it will crank and crank and never hit and if it does it sounds like it's running on about 2 cylinders and wont rev or anything. The car is extremely built it has a 515 lift cam, worked vortec heads, ross racing pistons, eagle alloy rods, scat crank, SLP Runners, 36 lb injectors, and a 58 mm throttle body it will smoke my 2000 trans am LS-1 car and it has a programmer and borla exhaust, but some days like I say it wont start and run right??? I mean honestly what the h*ll is going on? I am seriously debating pulling the whole TPI off and putting me a big intake and carb.

 

WAG you running a prom to match the engine? tune up good? fuel pressure ok?