building the new car to have an extremely quiet exhaust as possible. any suggestions on a good muffler for 3" that would give me great flow but quiet the noise level. wondering if i should purchase a silencer and run a cat as well. i don't mind loosing 10 or so horses if the car is quiet.

 

run a bullet in the i-pipe, then run a dynomax single in/single out ultra-flow muffler in the back.

 

thanks for the suggestion. haven't had good luck with dynomax in the past as i have it on my gp and the camaro at one time. not a very good product for me unfortunately as the mufflers i've experienced sounded terrible. maybe i'll have to look into them again.

i figured i'll probably have to run a bullet style silencer but i'm torn on the muffler though. i've had the single in/out for the last 3 exhaust systems which worked well for overall power and tone but it's much louder then the fake dual look. i may have to go back to that route.

 

the only crossflow mufflers i know of are dynomax, hooker, borla, and flowmaster. i know that the hooker and flowmaster let you know when they are there. maybe putting in a dynomax bullet or moroso spiral muffler in the i-pipe on one of those catbacks?

maybe deadbird could fabricate something up for you!

 

i could build something but i was hoping maybe someone had actual experience with this. many want their cars loud which i'm aware of... i want to see how quiet i can get it and still keep a good flow ratio.

 

just remembered that edelbrock came out with a catback not too long ago. supposedly flows really well and people are claiming it's pretty mellow. how bout that?

 

i'll have to look into it, i appreciate the suggestions.

 

hmmm, i'm actually getting a bit weary of the loudness myself. i may go back to a single exhaust. but i just LOVE the attention and thumbs up i get everywhere i go!

 

i drove mine mostly in the evening or at night... cruises are one thing but when your just driving around it can be a headache not to mention i have yet to see a camaro that ran and wasn't heard. just thinking of trying something different.

 

That is kinda the goal I have for my exhaust too. I prefer a quality, subtle growl over volume. Sleeper all the way I have a Hooker catback, and when I ran that with a 3" high flow cat it sounded really quiet to me. About the only time I heard it was if I was accelerating hard and had a wall or car next to me. I recently switched to a test pipe, and it is a bit loud in certain situations (still not like a blowmaster). I would recommend Dynomax for the quietest, but since you don't want anything to do with them... Instead of a cat, I was looking into running one of those Car Chemistry 3 disk inserts (Summit, and Jegs have them). I bet the Hooker catback and that would be real subtle too.

 

Theres a guy around here who is going to try to fit two C5 corvette mufflers under the rear bumper. I have no idea if they will actually fit or not, but it should be a really cool setup if it does work out. Put a Y-pipe after a 3" I-pipe, going into the dual C5 mufflers... that would be really cool !! The C5's I've heard aren't all that loud either, so those mufflers must work pretty well.

 

what about a fourth gen ss exhaust? like a take-off system or something? i've heard they flow EXTREMELY well and are very mild sounding.

 

Great idea. I would swap out the muffler though (if it is not an SLP muffler) since they tend to be a bit on the restrictive side.

I don't think the SLP systems are too loud based on what I have heard. I would put a resonator and not a bullet muffler half way down the I-pipe to quiet it down even more.

 

thanks for the suggestions everyone.

 

If you want quiet, put on stock. I installed a stock exhaust from Autozone (single in, dual out) and its quiet. Think I paid around $100 for everything. And its quiet.

 

i need high flowing though as the motor isn't going to be quiet. just trying to figure out the best combination of dampening and free flowing that i can come up with.

 

http://www.geocities.com/motorcity/t...92/vizard.html


edit : wow,can't believe i've never posted here before

 

I still think SLP is where it is at. They make so much stuff tailored for factory cars that they can't have it be too loud. I have always thought SLP made the most refined sounds without ever being too loud. With the exception of the loudmouth. My good buddy has the SLP optioned exhuast on his '02 SS with full 3" piping and it is by no means loud at all. Just really smooth. I know that headers will make it a bit louder but it shouldn;t be too bad. You may want to run dual cats as well. Two 2.5" cats should drastically reduce the sound over a sinlge 3" or 4".

 

if you look into SpinTech, they have some quiet mufflers and then they also have the split case ones, like the normal mufflers that are on our cars. but those sound kinda like flowmasters but better and a quiet

 

Ha-hahaaa.. I appreciate the plug but, if I aquire one more project, I'm going to end up sreaming untill my head explodes

The one thing I have noticed though.. is a 'ultra flow' style muffler (perforated tube core) is generally 'quiet' (better then flowmater quiet)/low toned during idle and low rpm (under 2k).

I got close to the quiet I wanted with my 'crossflow' currently on my car but, if ever I clone myself to catch up things, I have plans to make a corvette (c5 I guess..6.. whatever the ls1's were.. don't care enough about them to keep up on the numbers for them) style muffler.. only reversed, in the OEM crossflow style case position.

Confused ?.. me too most of the time I'd draw a cheap pic but, at this point.. would probably be worse them my description.. if that were possible.. lol.

 

SLP dual-dual exhaust is probably the quietest you can get without adding extra mufflers and silencers.

Here's some on LS1s

http://www.ls1sounds.com/slp_dual-dual.htm

 

Depending on how much $$$ you want to spend, you could look into what the military and some high end luxury cars are doing. They use a noise cancelling type exhaust. A microphone and a speaker is mounted in the exhaust system, and for every frequency that the exhaust produces the microphone will pick up and generate an opposite frequency wave thru the speaker, thus cancelling out all sound waves and leaving nothing left to be heard. I have never "heard" one in person, but they are supposed to be 100% silent. But I'd imagine a setup like that would be 100% costly

 

problem is i suppose you really can't keep even your motor quiet. i think it would be interesting to have a 400-450 horse car that you couldn't hear coming.

 

It can be done. Just look at the new GTo's and C6 vettes. They are way over 400hp and sound like every other car going down the road when cruising.

 

they are over 400 at the wheels now... i need to get one of those and quit with the thirdgens.



good point. cadillac is the same as well.