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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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Old 03-24-2010, 12:45 PM
Zack Birge Zack Birge is offline
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Exclamation Predator adjustments???

This might be a dumb question but here we go, what are the differences if I adjust the WOT SPARK, or the adjustment that makes it more rich or lean??? I know its stupid im use to diesels, I have no Idea on gas trucks?
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Old 03-24-2010, 02:06 PM
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I'd leave the WOT spark alone and add or delete fuel depending on your Air/Fuel ratio reading. WOT spark adjustments are best left to a qualified tuner.

If you have a shop with a dyno in your area you can get an A/F reading pretty easily.

At WOT, if you are running above 12.5 A/F, you are running lean and should add some fuel. If you are below 12.5, it's a bit fat but I'd leave it alone.

I suspect you are running lean as that's the factory default and loading a Predator on the truck with one of the canned tunes does not adjust your fuel.

There's a How To attached to this post that may be helpful to you.

Do this at your own risk. Or, talk to DiabloSport. Another alternative is to go see a DiabloSport Authorized CMR tuner.
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