Dyno #s and afr?
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11 Second Club
Joined: May 2004
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From: Va. beach,Va
Dyno #s and afr? dynoed about a month ago and came up with 368hp 343 torque and climbing(6400 rpm). Afr was 10.5 to 11.I know very rich.... My question is does anyone have any before and after on being rich on the dyno and tuning to an optimal afr afterward??? What gains do you get???Slightly off the subject with ls1edit there is a part in engine tuning under ignition that reads brake torque which looks like a timing table. Could some one give me some insight on this????
11 Second Club
Joined: Feb 2002
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From: Norcal
Here is the graph.....
Set up[ on car
Just converted to M6...
Lid,K&N,Pulley,TR220/220/114,FLP LT's, ORP's....No tuning, car was tuned on the dyno with a MAFT....you can see how much difference it made, the car made terrible power at 10:1 afr, lol
Set up[ on car
Just converted to M6...
Lid,K&N,Pulley,TR220/220/114,FLP LT's, ORP's....No tuning, car was tuned on the dyno with a MAFT....you can see how much difference it made, the car made terrible power at 10:1 afr, lol
From my experience and what I have also seen others you can expect to gain about 17rwhp for every 1/2 point of a/f. I have my a/f set at 11.0 and make 635, with 10.5 a/f I was making 618rwhp.
With a good tune the change in A/F will probly give you very little.I ussually see 3-4hp difference from 12.2-1 to 13-1.But this is after the timing has been maximized for the car.Now an untuned car running 11-1 A/F could gain alot from maximizing timing and leaning out to 12.8-1 
