Quote Originally Posted by MightyZ View Post
Wondering if it would be possible to tune?

I will probably reach out to Ray, but I figured I would double-check if anyone has heard anything.

It's a 6.7L Cummins/Allison 2500 combo.
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Try them and tell them we sent you.

https://heavydutytruckdiagnostics.com

God bless,
igotacummins