It was a tough choice for my 99, whether to go with a x or h-pipe but I read either in MM&FF or 5.0 magazine a test on a bassani x-pipe which proved considerable gains over an h-pipe. I went with the x which is likely why I felt a little loss of low end but it really comes on stong as rpm's climb.
Definetly post those numbers, curious to see what it takes to run low 13's.
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