Oxford_5oh
Active Member
- Thread starter
- #1
So ppl refer to E85 as knock proof or the holy grail but when the shop I used tuned my car after a paxton kit install the car was knocking at 20-22 degrees on E85 which kinda threw me off.
They said the stock headers/cats caused back pressure in the cylinders and is to blame, anyone have thoughts to support that claim and the need for long tubes and ditch the cats or should I be looking at something else for the cause?
They said the stock headers/cats caused back pressure in the cylinders and is to blame, anyone have thoughts to support that claim and the need for long tubes and ditch the cats or should I be looking at something else for the cause?
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