Ideal A/F for na motor?
11-08-2003, 03:19 PM
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Ideal A/F for na motor?
I logged my truck this afternoon and ATAP came up with 12.3:1 then tapered to about 10.9:1...Oh yeah my LTrims are about 2-5% positive too.
What's the ideal A/F for WOT?
What's the ideal A/F for WOT?
11-08-2003, 03:41 PM
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First let me say that the A/F ratio reported by ATAP is not accurate. I THINK it is the commanded ratio set by the computer not the actual ratio. This has been talked about before in the Diagnostics forum. 
I've heard from a tuner to shoot for 13:1 on a in vehicle wideband. Seems to be pretty good but, I almost feel like the truck ran better a little fatter. SOTP meter isn't calibrated that close though.
I've heard from a tuner to shoot for 13:1 on a in vehicle wideband. Seems to be pretty good but, I almost feel like the truck ran better a little fatter. SOTP meter isn't calibrated that close though.
11-08-2003, 03:46 PM
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Mr Bundy:
hrm so my comp want the A/F to get fatter at the Rev's rise?
I wonder how rich I really am running at WOT...ah well I need to get this box tuned soon here. 
Thanks!
hrm so my comp want the A/F to get fatter at the Rev's rise?
I wonder how rich I really am running at WOT...ah well I need to get this box tuned soon here. Thanks!
11-08-2003, 03:48 PM
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Originally Posted by BigTex
With a heavy truck, it may ping more under load at 13:1+, so I'd stick to 12.5:1 to 12.8:1.
BTW XLR8NSS- My innovative tech wideband seems to work pretty well.
BTW XLR8NSS- My innovative tech wideband seems to work pretty well.
The Innovative plugs into the cig lighter also right?
11-08-2003, 03:50 PM
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Originally Posted by Hit Man X
Mr Bundy:
hrm so my comp want the A/F to get fatter at the Rev's rise? I wonder how rich I really am running at WOT...ah well I need to get this box tuned soon here.
Thanks!
hrm so my comp want the A/F to get fatter at the Rev's rise?
I wonder how rich I really am running at WOT...ah well I need to get this box tuned soon here. Thanks!
Hahaha....Yes, I believe it has something to do with the COT feature to keep your cats from melting.
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