Sky- Long time no talk, hope all is well besides this H-Pipe issue.
We run the MAC High Flow cats on Dads 93 Cobra and they flow pretty good, ran much better and picked up mph over a stock H-pipe, his only had 30K on it. He traps 119 with the blower on it so I say get it to the track and see how it runs, you may need a different tune.
They say the Off Roads are worth 10-15hp depending on the set-up, more in the upper rpms. Why did you put it back on, just for testing or as a precaution, I heard they are cracking down out there.
Take Care,
Rick
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D/R 10108 NMRA Drag Radial, 25.5 chassis, F1R
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