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Help.

Here is the problem. I want a 2 stage boost controller from stock level of 7psi to 10psi, fully adjustable as i dont want to run 10 psi constantly. Now.. my question is if i tune the SAFC at 10psi of boost then when switching back to 7psi wouldnt the safc be tuned correctly afterwards?? would the SAFC makes any difference whether im running 7psi or 10 psi?

Cheers, and thanks .

the safc can swtich between 2 settings ( i know my safcii does) dunno about the safc. and i did a dyno run with 5psi difference and it didnt require me to change the safc settings, it was ok for 10psi and 15psi.

Original blue screen (not the very first one, but the one before last) S-AFC DOES NOT have the option for 2 complete sets of settings.

Its basically you tune for the high boost.. On lower boost setting, this will mean you'll generally be running richer, which is for most purposes acceptable. Its not efficient, but its the balance you have to accept.

Blue screen (yup, series 1 i guess you'd call it).. the one i have.

Basically I've run about 10-12psi high, and about 8psi low. It will run just as smoothly on the low setting, just less power and maybe uses a bit more fuel than if you didn't have a S-AFC at all.

yeaa thats what i want hippy. but pred was say the original blue screen doesnt have 2 stage settings which is safc series 1 right?

from what i know.. apexi release in total 3 different safc.

a black one (adjustable knobs) then safc series 1 (blue screen) and now safc series 2 (blue screen also)

if u are gonna have only 2-3 psi difference between your high and low boost settings, then if u tune the safc for your high setting its still gonna run preety much the same with the 2-3psi less. When i got my safc tuned years ago on high and then did a run on the dyno in high and low the a/f ratios were preety close for both settings.

Pushhead, I don't speak for everyone one, but in my experience I have never taken the car off High boost. I wouldn't bother spending the money on a duel stage boost controller. I would just buy a GFB single stage, set it at 12 pounds, the safc tuned And leave it at that. Why do you want to run low boost aswell?

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