I have stock 2.8 with stock exhasut besides the straight pipe that is in place of my catalytic converter. What would happen, if anything, or what would it sound like if I kept my muffler on, but installed a glasspack, or maybe a different high flow muffler in place of the straight pipe where my catalytic converter used to be? Thanks
I have a thrush glasspack, should i put it in place of the straight pipe that is currently there? And keep my muffler on there? Would that be alright performance wise and not mess anything up? And would it sound a lil better than the straight pipe? Thanks!
mine was in place of the cat I kept the stock muffler...as I said it sounded better than the straight pipe...didn't seem to mess anything up? drove it for at least five years like that..as far as I know the car is still going..
Personaly I think the stock setup sounds better but everyone will have a differant thought as to what sounds good...with the glass pack it sounded kind of gravely/tinny.... hard to explain and we're talking two differant glass packs as well (I think) so you might get a differant sound from what I had....I would stick with the cat if its good...
If you dont have smog testing, leave a cat off. I dont have it, so I leave them out of my exhausts. Im guessing a straight pipe is louder than a glass pack would be. One of my Corvettes only had a blown out cat with no mufflers at all. Wasnt much louder than stock to me. On Fieros that are crowded for space to start with, I like using baffled tips with/without glass packs. My V8 one had two small glass packs and baffle quad tips and I thought it sounded great. If your trying to get a certain sound, theres no way to get around trial and error to see what you like.
If smog required replace the Cat, no and if's or buts - If not and replaced with a straight pipe it will "drone" and your ears will feel it in a very short time. To fix the drone a resonator or glass pack with smooth out the drone - You have your answer on the muffler in a couple of your other post.