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I installed my x-brace but ran into a wierd problem, everytime I rev my engine to 6000 rpm and let go of the pedal,my engine makes a wierd scraping noise? did I tighten the bolts too tight or did I not even tighten them enough? I didn't use a torque wrench but I think I torqed the bolts to 76 lb with my foot?
It also sounds like its my transmission, I don't know? thats why i'm here.
thanks

 
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Check if the exhaust is rubbing it or something else coming in contact with the brace. I had no problems putting mine in. There is about 1/2 inch clearance between the pipe(OBX header, OEM cat, 2.5in midpipe, OEM muffler) and the bar.

 
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I looked under my car and it's my exhaust thats hitting the brace? thanks for the help.

 
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if you are planning to get the progress sway bar combo you might run into the same problem as well.

 
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no they redesigned it to not be an issue with aftermarket exhausts

 
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the progress sway bar's bushing mounting bracket has to be cut for clearence of the bolt's that go in the sub frame.