I bought this along with the cat less down pipes and phenolic spacers. The intake quality first of all is second to none, everything fits flawlessly. The intake alone wakes the car up to a night and day difference. It sounds like a rocket ship under throttle and you can actually hear the bypass valves now (though itâ€™s still faint). If youâ€™ve got an ATS-V this part is a must have.