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Fasterthanyou · 05-23-2005, 08:52 PM

Sounds awesome. Before he gasket matchs the intake you might want to consider going to carb but keeping the computer for spark control and emissions testing. For TBI to support 420hp with your current injectors you're looking at ~26psi of fuel pressure. I've tuned a ~400 crossfire corvette with 22psi, it didn't have idle issues but it's entirely up to you. The TBI would be cheaper but there MIGHT be small issues. Another trick up my sleave is to use a vacuum ref.FPR. This way at idle and high vacuum conditions the fuel pressure will be low and then at WOT it'll go up.

05-23-2005, 08:52 PM	#15
Fasterthanyou Join Date: Aug 2004 Location: Montgomery NJ Posts: 1,271 iTrader: (0)	Sounds awesome. Before he gasket matchs the intake you might want to consider going to carb but keeping the computer for spark control and emissions testing. For TBI to support 420hp with your current injectors you're looking at ~26psi of fuel pressure. I've tuned a ~400 crossfire corvette with 22psi, it didn't have idle issues but it's entirely up to you. The TBI would be cheaper but there MIGHT be small issues. Another trick up my sleave is to use a vacuum ref.FPR. This way at idle and high vacuum conditions the fuel pressure will be low and then at WOT it'll go up. __________________ , Jon Owner of a Red Sled. If it\'s EFI I can tune it. Specialize in 82-95 GM (yes Lt1\'s) \"If you can leave black marks on a straight from the time you exit a corner till the time you brake for the next turn.......Then, you have enough horsepower\" - Mark Donohue