The ISR Performance test pipes are constructed using high quality stainless steel. These test pipes utilize stock flange locations so they can be used with stock components or aftermarket (Provided they aftermarket components use stock style flanges and mounting locations).
These test pipes will eliminate your catalytic converter, and are designed for off-road use only. Their straight through design will help add the maximum amount of horsepower and torque to your VQ, especially when paired with the ISR Y-pipe and exhaust!
These test pipes will ONLY work for VQ35DE motors, if you have a late model Z33 with the VQ35HR you will need to purchase the Z34 style test pipes.
What’s in the Box:
2xStainless Steel Test Pipe
2x 2 bolt exhaust gaskets
2x 3 bolt exhaust gaskets
2x O2 Sensor Adapter Extension Angled
** All ISR Performance Products are Designed for Off Road Use Only **
These pipes fit perfectly with no adjustment necessary. Definitely notice some drone but only at WOT. Gives the car a nice deeper tone and I still have stock y-pipe and exhaust tip! Can't wait to pair it with the matching ISR y-pipe and exhaust tip. Relatively easy install too, the tools I found helpful on my 06 Z were 15-millimeter socket and a crescent wrench. I also used a rubber mallet to help break through the previously attached bolts that were rusted. Id keeps extensions for the socket wrench if you plan on going through the engine bay (wasn't necessary for me). Haven't taken the car out on the track since the install but I'm sure there hold up nicely :). In all, great product and great price.