These are the mods to my car. Long tubes, hooker exhaust, Moroso CAI, Hypertech power programmer, thermostat(160), twin 52mm BBK throttle body. Was wondering what to set my FPR at psi wise. Was at like 39 or 40 and was getting to much air not enough fuel. I am now running it about 43 and everythign seems to be good. Is this correct? Any info would help

-kyle

 

Ya i kinda figured that would be the best. But at times money is tight

 

~43 psi is stock LT1 fuel pressure. For WOT tuning you will need to dyno with A/F and adjust from there.

 

ok cool. Its set at 43 or 44 now so.....

 

How do you know you were too lean?
Plugs?
Stock fuel pressure is 42 psi, roughly what Half Fast said.
39-40 psi should've worked good for you, but every car is a little different. The only way to tell for sure is the dyno.
My fuel press is still stock and I am ran rich as sh..t at Coastal.

 

When i was set at 39 psi i would come out of the hole at the track bogging extremely bad. To me that was signs of being lean. Had a hard time getting past 5,000 rpm's. Now that its at 43 it seems to be ok? Not sure. And yes the dyno im sure would be the best bet