The 'Y' pipe looks restrictive. It's also a complicated piece. Shields, O2 bung, etc.. And of course, it's stainless steel.
Some cat convertors aren't overly restrictive, and a well tuned muffler can be quiet and still allow good flow.
1 - 4 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
A forum community dedicated to GMC Terrain, Chevy Equinox, and Cadillac SRX owners and enthusiasts. Come join the discussion about modifications, classifieds, troubleshooting, maintenance, reviews, and more!