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well, it all depends on what you want to do with the car. if you want a fast street car, you shoudl go with a 20. if you want a car that is pretty quick, go with a 16. The 16 will spool fast, and will do 20-22 psi ok. the 20 spools about 400 rpm slower and will hold between 30 to 24 psi (depending on how long you wind out the car). if you aren't going to wind it up past 15 psi, you are better off with the 16. it all depends on what size injectors you run to wether you need to retard timing or not (thinking your motor is built and you have an afc) The more you lean it out, the less load yoru ecu is going to think you have, and the more timing it is going to pile on, so if you hav eto lean it out A LOT (big injectors) the ecu will pile on a LOT of timing (up to 30 psi at wot) and that will cause you to knock a lot easier than normal on pump gas, and will either limit the amount of boost you can run, or limit yoru engine's life. I woudl not run more than 12 psi without timing retard with upgraded injectors and an afc. anything past that is putting your in the will of the reaper  . and he will take it when he feels like it.
A.D.P.
"...If you do too much, people become dependant. If you do to little, people loose hope. If you do it right, people won't be sure you've done anything at all."
bring it on............
A.D.P.
"...If you do too much, people become dependant. If you do to little, people loose hope. If you do it right, people won't be sure you've done anything at all."
bring it on...........
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