VAFC settings for boost?

[oldskoolracer]

i'm installing dsm 450's and need to tune for them but i don't know what settings need to be adjusted.




i have a b16 with 8psi of boost


also have a freind with 10psi of boost on a b18b



any suggestions

[Weston-work]

-38 at idle to -35 at redline on the wide throttle map, narrow map should be a little leaner, throttle points at something like 20%/50%, then GET IT TUNED.

[Mario]

Yea do not drive hard on that map at ALL. Just as a word of caution. It will get you from point A to B and that's it, do not use it to get hard on boost or anything like that.

[Kwando]

Yea do not drive hard on that map at ALL. Just as a word of caution. It will get you from point A to B and that's it, do not use it to get hard on boost or anything like that.


why not? i plan on only using a VAFC when i go turbo until i get enough for a EMS

[Mario]

Because the map is pretty much a wild guess... like Weston said, you can drive on it... but seriously get it to the dyno and get it tuned as soon as possible.

[Weston-work]

why not? i plan on only using a VAFC when i go turbo until i get enough for a EMS

It's not the VAFC that's the problem, it's the lack of tuning. These setting are just guesstimates that need to be fine tuned with the use of a wideband O2 sensor on a dyno (you need it for it's consistent load). Once it's tuned properly, the VAFC setup works great.

[oldskoolracer]

yeah i figured, that's why i'm pullin gthe first motor out