d1zguy
Senior Member
- Joined
- Apr 6, 2017
- Threads
- 23
- Messages
- 769
- Reaction score
- 369
- Location
- VA
- Vehicle(s)
- 19' Mustang GT Premium
I did when the motor was breaking in. It seemed to stop at around 15k miles.You never had black soot on your exhaust? Is that possible? I have been cleaning my exhaust of black stuff since before I did any modifications.
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