VQ37VHR Test Pipes for Infiniti G37 | Nissan 370Z | Infiniti Q50 3.7L - Stainless Steel Cat Delete Downpipes | Aggressive Sound + Horsepower Gain | Direct Bolt-On VQ Exhaust Upgrade

Unleash the true sound and power of your VQ37VHR with this set of Stainless Steel Test Pipes built specifically for 2008-2013 Infiniti G37 Coupe/Sedan, 2009-2020 Nissan 370Z, and 2014-2015 Infiniti Q50 3.7L by deleting the restrictive factory primary catalytic converters and replacing them with smooth 2.5" mandrel-bent 304 stainless tubing that drops backpressure, improves exhaust scavenging, and lets your V6 finally breathe and scream the way Nissan intended, and these test pipes deliver an instant 10-15whp gain on stock cars and 20+whp with a tune while transforming your exhaust note from muted factory drone to a raw, aggressive, high-RPM howl with sharper throttle response and real racecar rasp that turns heads at every cold start, and they’re fabricated from thick 2mm T304 stainless with CNC-machined 3/8" flanges, robot-welded seams, and brushed finish for corrosion resistance and 100k+ mile durability, and the design uses OEM-style 2-bolt inlet and 2-bolt outlet flanges with exact VQ37VHR port matching so they bolt directly to your factory exhaust manifolds and y-pipe or cat-back with zero cutting, welding, or custom fabrication required, and every set includes high-quality 2-layer MLS gaskets and zinc-plated hardware for a leak-free seal, and the pipes are available in non-resonated for maximum volume and rasp or resonated with built-in Helmholtz chambers to kill drone and tame rasp on daily drivers while still adding power, and both versions include O2 sensor bungs in the factory location plus optional 90-degree O2 defouler extensions to help prevent CEL on most ECUs, though a tune is recommended for best power and to disable P0420/P0430 codes on 2009+ models, and fitment is confirmed for all VQ37VHR platforms including G37 RWD/AWD, 370Z Coupe/Nismo, and Q50 3.7L with both manual and automatic transmissions, and they clear factory heat shields, steering shafts, and crossmembers with no interference or rattling, and installation takes 1-2 hours on a lift with basic tools since they reuse all factory mounting points, and they pair perfectly with aftermarket y-pipes, cat-backs, and intakes to build a full bolt-on VQ exhaust system that finally sounds as fast as it is, so if your G37, 370Z, or Q50 feels choked up and too quiet, these VQ37VHR Test Pipes are the most cost-effective way to add horsepower, torque, throttle response, and that iconic VQ exhaust note that makes every drive feel like a track day, and every set is pressure-tested, inspected for weld quality and flange flatness, and backed for real-world performance so you get the sound and gains without the cheap eBay leaks or fitment headaches.