VQ35 / VQ37 Test PipesCatless Test Pipes for the VQ Engine Family Unlock hidden horsepower and unleash the true sound of your Nissan with TMR Performance stainless steel test pipes, precision engineered in New Zealand to suit the VQ series engines: VQ25HR VQ35DE VQ35HR VQ37VHR Compatible with the following models: Nissan 250GT, 350Z, 350GT, M35 Stagea, 350GT Fuga, 370Z, and 370GT. From factory, the most restrictive part of your exhaust system is the catalytic converter. By