Quote:
Originally Posted by brooke1972
Just wanted to post up that my car currently with the HEX Tune is now backfiring to where it has ever never that before. It sounds horrible and not what I was expecting. I'm now debating on switching back to the newer MHD Tune because when I had it before it was ultra smooth. Also has anyone else had any issues with this tune with the car not wanting to shift to the next gear correctly?
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Can you please clarify what "is now backfiring" is or sounds like? What differentiates it from "burbles?"