Running lean - losing HP?
Thread Starter
Joined: Jan 2004
Posts: 2,241
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From: Mission Valley, TX
Running lean - losing HP? I just got my car dynoed today with a wideband 02 sensor and was running lean AFR was around 14.6-14.8 and made 373rwhp. How much HP will I gain if I can get the AFR down into the 11-12 range. Also is there anything I can change to do this or do I need to go get it tuned?
ARE stage 3 heads, 216/220 cam/ FLP headers/ LS6 intake/fast ram air/ ported TB/ pulley
ARE stage 3 heads, 216/220 cam/ FLP headers/ LS6 intake/fast ram air/ ported TB/ pulley
You usually don't make as much HP going from lean to rich as you do from rich to lean.
I am going to say 10 HP at the most.
What you may make up for is KR which is quite possible in the upper RPM.
Also, 14.8 at WOT is quite lean. I would hold off on beating on the car until you can determine a way to get your a/f down around a 12.5-12.8
Good Luck
I am going to say 10 HP at the most.
What you may make up for is KR which is quite possible in the upper RPM.
Also, 14.8 at WOT is quite lean. I would hold off on beating on the car until you can determine a way to get your a/f down around a 12.5-12.8
Good Luck
