Thread: Dps plz help
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Old 12-17-2011, 10:35 PM
MADDOG MADDOG is offline
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If the engine is rattling and pinging, it doesn't like that lean of a burn. Richen the mixture (there's a how to on adding fuel with the predator here), get a tune done by an authorized CMR tuner, or up the octane you put in the truck.

The last one is an immediate fix that works. My HEMI hated 87 octane fuel from day one. It almost refused to run. With 89 it ran better but no where near what it should. I run a 91 tune now with 92 octane fuel.

No pinging, no rattling, just great performance. And, I get better mileage!
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