Hollow 3rd Cat.
Lexus Test Driver
Joined: Apr 2011
Posts: 8,340
Likes: 330
From: Las Vegas
I don't see how a hollow cat or resonator would hurt performance. If anything it would help a little. I understand that unlike a diesel engine, gas engines do need some back pressure, however, we don't need 2 cats, 3 resonators, and 2 muffler's worth of backpressure......
I don't see how a hollow cat or resonator would hurt performance. If anything it would help a little. I understand that unlike a diesel engine, gas engines do need some back pressure, however, we don't need 2 cats, 3 resonators, and 2 muffler's worth of backpressure......
Hollowed cats in particular do NOT help performance, indeed they do HURT performance by creating a stagnation point in the exhaust, mucking up both exhaust flow and exhaust velocity. again, read up.
that being said, the 1LS center resonator or cat (they made models with both) can be deleted but doing so requires a less ghetto-rigged approach. A singe long-merged y-pipe for example would give you an ever so slightly better sound as well as possibly (minutely) increase performance. not to mention the fact that even high quality burns stainless y-pipes are less than most all bolt-in replacements for either of those parts....
Thread
Thread Starter
Forum
Replies
Last Post
