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Michael Beard · 07-25-2011, 08:44 AM

Question: Would your "proper" target A/F ratio possibly be different in ohrrendously different conditions? 4600' and a vapor pressure over .90 this weekend, and it seemed like it went lean when I tried to take enough fuel out of it to get the A/F close to where I had the car running decent at MIR.

Also, when I do get around to doing the "pit driving" tuning with some mufflers on the car, what kind of A/F do you look for in comparison to your WOT A/F? Still much leaner? Seems like the example programs have it up in the 15's at low rpms?

07-25-2011, 08:44 AM	#7
Michael Beard VIP Member Join Date: Sep 2002 Location: Columbus, OH Posts: 4,060 Likes: 0 Liked 13 Times in 9 Posts	Re: Single channel O2 Question: Would your "proper" target A/F ratio possibly be different in ohrrendously different conditions? 4600' and a vapor pressure over .90 this weekend, and it seemed like it went lean when I tried to take enough fuel out of it to get the A/F close to where I had the car running decent at MIR. Also, when I do get around to doing the "pit driving" tuning with some mufflers on the car, what kind of A/F do you look for in comparison to your WOT A/F? Still much leaner? Seems like the example programs have it up in the 15's at low rpms? __________________ Michael Beard - NHRA/IHRA 3216 S/SS