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Power Enrichment table - 1.15

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Old Feb 24, 2006 | 03:43 PM
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Default Power Enrichment table - 1.15

Originally Posted by Redhardsupra
Undo the GM marketing department's lame attempts to keep the LS1 from a F-body lower output than the Corvette. Setting the Power Enrichment table universally to 1.15 results in a much more sane (than the overprotective stock) 12.7:1 air-fuel ratio.
Is this a good idea on a stock car?

Last edited by D_Run; Feb 27, 2006 at 11:15 AM.
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Old Feb 24, 2006 | 04:36 PM
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it is a decent idea, as long as it does not rattle.

Ryan
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Old Feb 25, 2006 | 05:09 AM
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So i should do it? and just look for knock?
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Old Feb 25, 2006 | 06:18 AM
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this is best done on a dyno to make sure that you are commanding the best afr. you will also need a wideband so you know what your actual afr is.

but yes its a good idea
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Old Feb 25, 2006 | 01:21 PM
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I'm more of a fan of a moving fuel curve. I believe a leaner fuel curve down low isn't as good for peak torque. I set mine to be slightly rich down low (12.0:1), rising to 12.2:1 for peak torque, rising further to 12.8:1~13.0:1 for peak hp and then richening back to 12.6:1 for redline. Combine this with a slight increase in spark over stock (~2 degrees) and you can gain up to 2 tenths and 2 mph in the quarter.
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Old Feb 27, 2006 | 10:39 AM
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Thanks for the comments.
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Old Feb 27, 2006 | 10:42 AM
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Originally Posted by SSpdDmon
I'm more of a fan of a moving fuel curve. I believe a leaner fuel curve down low isn't as good for peak torque. I set mine to be slightly rich down low (12.0:1), rising to 12.2:1 for peak torque, rising further to 12.8:1~13.0:1 for peak hp and then richening back to 12.6:1 for redline. Combine this with a slight increase in spark over stock (~2 degrees) and you can gain up to 2 tenths and 2 mph in the quarter.
yeah thats how i set mine up...i use the 2d graph to setup the table...make it look like a mirror of a projected tq curve.
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Old Feb 27, 2006 | 10:51 AM
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Hmmmmmmm...on a stock car, I'd be weary. As long as you use a wideband to verify the AFR, go for it. Otherwise, you may not get what you command.
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Old Feb 27, 2006 | 11:00 AM
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out of curiousity which thread is that from? (I don't recall saying that, unless it was a real long time ago?)

Definetly need a wideband to properly dial it in (setting to 1.15 will only yield ~ 12.7 AFR if your VE table is dialed in correctly)

Also I've found (as others have stated) that a flat PE isn't always ideal... often you can make more power under the curve by changing the AFR between richer and leaner at peak torque and hp ... 12.7:1 or so seems ideal for a max HP point.
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Old Feb 27, 2006 | 11:17 AM
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IŽm sorry Horist, IŽve checked who wrote it and it was Redhardsupra... My mistake

He wrote it on his blog http://redhardsupra.blogspot.com/ halfway down.
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