PBMGOAT04

I have a 2004 gto with a 408 stroker. Compression is 12.23:1 and runs on e85and right now it has about 2 feet of pipe which is 3in with dynomax bullets on the ends along with turndowns. Ive been trying to find real information about this setup compared to an x pipe. All I can find are results on cam only cars, nothing with this much compression. So, my question is would I benefit from adding an x pipe or h pipe for the scavenging effect? Or is my current setup suitable for my engine? I know this is probably a old and tired question but I just cant find any real answers for an engine like mine. Thanks

thunderstruck507

iTrader: (18)

Consensus from people who have tried them on the chevelle board with race built big blocks is that the x or h should be considered a "sound" mod, not a performance gaining one.

I seriously doubt you would notice any difference at all between what you have an no change but a crossover.