Exhaust modification question
Thread Starter
Drifting
Joined: Dec 2012
Posts: 1,504
Likes: 73
From: Georgetown TX
Exhaust modification question
1989 automatic. No engine modifications
I have stock exhaust, except no cats. I want to run muffler delete pipes, but afraid it might be a touch to loud. I am installing headers, and I was thinking of installing one straight through glass pack type muffler where the main cat use to be. I am wondering if it would quiet it down a touch? Just for info I watch Engine Masters the other day in which they were testing engine horse power with chambered, turbo and straight through mufflers. Of course the straight through produced the best results. Watch it if you get a chance. They also did one one single exhaust vs dual, and 2.5 vs 3 inch exhaust.
I am trying To lose as little horse power as possible, spend as little as possible and quiet car down. What about a high flow cat? Any thoughts?
I have stock exhaust, except no cats. I want to run muffler delete pipes, but afraid it might be a touch to loud. I am installing headers, and I was thinking of installing one straight through glass pack type muffler where the main cat use to be. I am wondering if it would quiet it down a touch? Just for info I watch Engine Masters the other day in which they were testing engine horse power with chambered, turbo and straight through mufflers. Of course the straight through produced the best results. Watch it if you get a chance. They also did one one single exhaust vs dual, and 2.5 vs 3 inch exhaust.
I am trying To lose as little horse power as possible, spend as little as possible and quiet car down. What about a high flow cat? Any thoughts?
Last edited by mlm0; Apr 14, 2020 at 10:30 PM.
Drifting
Joined: Apr 2014
Posts: 1,699
Likes: 231
From: Hawthorne CA
Figure the cheapest option is to have muffler delete pipes welded in. If too loud you can add a muffler/glasspack/x-pipe or whatever works for you.
I happen to think L98 sounds great on muffler delete.
Heres a good video of a TPI car with cats and muffler delete.
I happen to think L98 sounds great on muffler delete.
Heres a good video of a TPI car with cats and muffler delete.
Team Owner
Joined: Dec 2012
Posts: 30,427
Likes: 1,609
From: Outside the Quick Stop N.J.
Figure the cheapest option is to have muffler delete pipes welded in. If too loud you can add a muffler/glasspack/x-pipe or whatever works for you.
I happen to think L98 sounds great on muffler delete.
Heres a good video of a TPI car with cats and muffler delete.
https://youtu.be/0nd_IMRp73M
I happen to think L98 sounds great on muffler delete.
Heres a good video of a TPI car with cats and muffler delete.
https://youtu.be/0nd_IMRp73M
Zen Vet Master Level VII
Joined: Mar 2016
Posts: 5,218
Likes: 1,174
From: Southlake, TX
Add headers to that combo and you will get more out of it on the top end, but you wont notice that much on low end. The L98 is a low end torque monster. Save your money.
