air/fuel ration

[jt98boost]

air/fuel ratio

What would be idel air/fuel on a centrifical supercharged car at wot, I heard blower cars need to be a little richer at wot on the tune. 12.1 sound good?

 

[blackink00]

whats a ration and 12.1:1 is pretty low

 

[Kilgore Trout]

Did you install the s/c? Have you had it professionally tuned after the install? Were you using a wideband (real) o2 sensor?

 

[jt98boost]

Yes, it was professionally done, but I was going to ad a power pipe and maybe a small shot later, but power pipe to start with. Currently 11.8 is a/f at wot, I fiqured power pipe might put it a 12.0:1. I have a lm1 wideband that I am going to use to double check my a/f after the power pipe install this week. I also have a msd-dis-4, I don't think I should mess with timming with just a power pipe, but If I do spray a small shot I fiqured I would drop a couple degree of timming using the msd-dis4, What do you think about that sound good ???

 

[mr. jones1]

sounds OK, my tuner said 12.0/1 was Ok but no leaner. even 12.5/1 is dangerous.
my car had the pipe from the initial install so I don't know how much the ratio will change. the pipe does help boost so be careful.

 

[mac1009]

I'm right at 11.5:1.

 

[forpit2000gt]

11.5 - 12 to1 should be good but I would take and have tuned when you get the pipe on. Do you have forged internals? You will be a lot safer, especially with even a small shot with a good tune.