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Old 04-20-2021, 10:15 AM   #5 (permalink)
livewire516
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Join Date: Jul 2009
Location: Philadelphia
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Matt Foley's worst nightmare - '09 Chevrolet Express 2500
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Quote:
Originally Posted by serialk11r View Post
If you're against running lean because of NOx, tuning probably won't help you much with that engine.
Thanks for the input. I suspected that may be the case - being GM's 'smallest' Gen III+ motor, I assumed that also meant it's pretty much de-tuned to a significant extent
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