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07 Roush 427R misfire issue

Thanks for the reply, I thought the exhaust was all Roush. I'll have to check on that. I'd cat(s) are clogged, would pulling the O2 sensors out and starting it confirm the restriction?
- AP in PA
- Post #4
- Apr 10, 2022
- Forum: 2005+ Mustang GT 4.6L Tech
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07 Roush 427R misfire issue

Hello all, I have an issue with my Mustang that has been driving me nuts for awhile now. Read some of the forums here, found them to be helpful, but my exact problem hasn't been covered, that I could see anyway. Best to start at the beginning, car is an 07 Roush 427R 4.6 manual trans, with...
- AP in PA
- Thread
- Apr 10, 2022
- bad ecm misfire roush
- Replies: 3
- Forum: 2005+ Mustang GT 4.6L Tech