Thread: H pipe X pipe or neather

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i have the x pipe with 4 inch with dyno max mufflers on the gto .at the time i did it i had the 548 14to8 cr engine it with a luntati roller cam 748 lift on a 108. the sound was great.it sounded like a very big ferrari. no cackle just a low guttural sound then when you hit it change pitch .i have done both the x is harder to do . i have done alot more H then X i did not need any low end .i will stick with the X for the BBC if i could down load the u tube vid. i show youwith the low cr 10.5 cid632 just sounds abit mellow i think its the low cr