MyCARneedsHelp said:i was thinkin about gettin the American Thunder Kit, but rather not use the taip pipes, just a perfromance H-Pipe and mufflers. Does anyone know what chamber these are and where i could get them at? Thanx !
MyCARneedsHelp said:what one do u guys think about them? Original or delta flow?
65ShelbyClone said:I'd offer to sell you mine if I had another cat-back sitting around, which I dont. My American Thunder droned to begin with, but the O/R X and my other mods made it 10 times worse. I've had mine for about 2 years and I got it at Performance Automotive Warehouse.
RacinChris said:Did the O/R X change the RPM range at which your drone occurs at all?
I hear long tube headers eliminate the drone
65ShelbyClone said:Nope, the X just made it drone a heck of alot louder in the same 1800-2200rpm range. Longtubes would be nice, but I have the visual part of CA smog checks to worry about.
mustangdaren said:I wouldn't waste my money on an American Thunder catback if you don't need the tail pipes. Get you a set of MAC pro dumps and save $100. They sound almost the same but the MAC are suppose to be a little louder and without the drone. I switched from the American Thunder kit to the MAC pro dumps and love them. Took me about 10 minutes to put them on in the driveway. The 3 inch Pro dumps come with reducers to work on stock or 2.5 inch h-pipe also.
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