safc race gas?

[Alexxx]

ok so i know for 91 octane 20 psi your supposed to tune to about .94-.96 o2 sensor, what about race gas? can someone fill in the blanks? oh yeah t/b, intake, b/c, 255 and safc of course


octane* * * psi* * * *02
91* * * * * * *20* * * *.94-.96

100* * * * * *23* * * * ?

116* * * * * *25* * * * .88

[Alexxx]

just saw this, so this answers one of them

SAFC Tuning/Installation
« Reply #6 on: May 25, 2004, 11:40:59 PM »

For an EVO you want to tune for .94-.96 O2 volts, and since knock sum isn't shown on a datalogger, you want to keep the timing above 15 degrees on the logger or it means it is knocking too much. Of course the EGTs are still valid, keep those under 900C.

For C16 at say 25PSI you can get away with an O2 voltage of around .88

[Alexxx]

anyone?

[turbolarry]

I've never tried stright 100, but try a little bit at a time.
Lean it out and get to .92v. As long as your still getting a good timing curve go to .90v.
Me; I'm scary so as long as the timing still looked good I'd leave it at .90v., but you might be able to go more depending on how the timing looks.
Let me know how it goes.

[Blaze]

I've never tried stright 100, but try a little bit at a time.
Lean it out and get to .92v. As long as your still getting a good timing curve go to .90v.
Me; I'm scary so as long as the timing still looked good I'd leave it at .90v., but you might be able to go more depending on how the timing looks.
Let me know how it goes.


^-^ Larry you know we had my GSR down to .89 in several spots.

Alex, in addition to what Larry said, you may also want to lower your boost if your timing dips too much. More PSI does not always = more power.