MG-Rover.org Forums - View Single Post - Standard backbox with valve - mod project
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post #17 of (permalink) Old 20-03-2017, 19:34
Maddog1950
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Join Date: Feb 2017
Car: MG TF
Posts: 6
I don't know if the F/TF box is the same, but removing or losing exhaust packing from some exhausts loses performance. It tends to be ok until it reaches a certain rpm and then the power just flatlines.
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