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Discussion Starter · #1 ·
Hey all,

Trying to tune my car for 18psi. Previous owner installed an HKS FCD and a Profec B. Right now i'm topping out at approx. 1 bar, maybe slightly less, (14 psi) in 3rd gear. I'd like to know a good voltage setting for the FCD and a tutorial on how to tune the profec B. Thanks guys.



2,293 Posts
to set up the profecB, the sharp mild knob controls overboosting. It's best to set the knob as sharp as you can without getting overboost, mine is set to about 1 o'clock. If I have the lo boost knob all the way up I still only hit 1.1-1.2bar. If you want to boost over that you have to switch to the high boost knob. For me I hit 1.3 bar at about 12o'clock, but this will depend on your can and the weather.
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