I have an 98 zx2 Im currnetly running 2 1/2 pipe from the cat back its seems like I don't have as well of reaction time off the line. Does anyone have any exprence with what size pipe I'd want to run?[color=red][/color]

what mods do you have done? and are you a atx (auto) or mtx (manaul)

Jarred

2.25" is good for low end and 2.5" is good for top end. In an ATX I would run nothing more than a 2.25" catback.

What's your car look like? I often see a red ZX2 with a Nitto sticker buzzing around my work in Roeland Park.