Afr drop of 3points with dual nozzle meth, normal?
Thread Starter
10 Second Club
iTrader: (22)
Joined: Mar 2006
Posts: 3,677
Likes: 2
From: Northwest side of Chicago
Slowhawk, I took the car to the track today. I commanded 11.0afr and sprayed one 15gph nozzle. Ran the afr error histogram and made a few passes. I was really able to fine tune ve the way you spoke of. It was super easy and the car ran great. 9.8 @138 3800lbs on 17 inch drag radial,iats went from 149 on a pass with no meth to 79 with it. Thanks for the advice. Ill probably add a second smaller nozzle and do some more tuning.
Glad you figured it out. I run 2-15 nozzles and you can't even tell when the methanol comes in. Tuned it last fall like this. Been racing it all this year and haven't touched the tune. I don't even log the passes. Lol
TECH Fanatic
Joined: Mar 2011
Posts: 1,916
Likes: 8
From: Statesville, NC
My temps probably drop more than I stated with two 10 pound nozzles but I don't have a way to log besides watching a scan tool and when 18 psi comes in its hard to stare at a scan tool screen lol.
Slowhawk, I took the car to the track today. I commanded 11.0afr and sprayed one 15gph nozzle. Ran the afr error histogram and made a few passes. I was really able to fine tune ve the way you spoke of. It was super easy and the car ran great. 9.8 @138 3800lbs on 17 inch drag radial,iats went from 149 on a pass with no meth to 79 with it. Thanks for the advice. Ill probably add a second smaller nozzle and do some more tuning.
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