3.5 3.9 Tune - Chevy Impala Forums
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post #1 of (permalink) Old 08-11-2019 Thread Starter
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3.5 3.9 Tune

Does anyone know of a pcm tune for the 3.5 3.9 platform?



2010 Impala LTZ
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post #2 of (permalink) Old 08-13-2019
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trifecta is about the only place left that's doing them for that platform. they are a "canned tune" however if you look into it you may be able to get a custom tune as well depending on the package you buy.

a custom tune from overkill when he was doing them for the 3.5's really added increased throttle response and my butt dyno liked the results. my gas gauge however saw a difference in mileage.
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post #3 of (permalink) Old 2 Weeks Ago
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I have the Trifecta and for me it was not worth the money. About all it did was crispin the shift points. I get a light throttle backfire if you step on it at "rolling" lower speeds. Like if you are going 30-40 and hit the throttle to pass it backfires through the air cleaner [intermittently]. I would of thought to increase performance engine would be "richened" to get more gas. For the cost VALUE is not there.
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