Exhaust compatibility question

**Johns00Z28** · 09-04-2007, 04:01 AM

I'm considering purchasing some long tube headers. I'm wondering if I would need to get an aftermarket y-pipe to go along with that or would the stock one work? Also, would it be able to bolt up to the stock catback? I'd honestly prefer going the true dual setup but with my 8 month old son in the backseat of the car I don't want it to be obnoxiously loud. Thanks.
-John

**9t8z28** · 09-04-2007, 04:34 AM

You will need a Y-pipe and yes, it will bolt up to the factory catback

**Jays00ss** · 09-04-2007, 04:44 AM

Originally Posted by 9t8z28

You will need a Y-pipe and yes, it will bolt up to the factory catback

+ your stock y pipe is flat as a pancake WTF was chevy thinking?

**sunsetorangess** · 09-04-2007, 05:00 AM

Lol chevy was thinking clearance issues.
As far as your y pipe you will need to get a new one, either a ory or a catted Y. What catback do you have? It should bolt up without any issues and to be honest depending on ur catback it probly wont be much louder.
J

**Johns00Z28** · 09-04-2007, 05:25 AM

My car is completely stock at the moment so just the stock catback. I want it to be a bit louder but like I said with my son in the car I don't want a ridiculously loud exhaust.

**nhraformula** · 09-04-2007, 06:20 AM

Originally Posted by sunsetorangess

Lol chevy was thinking clearance issues.
As far as your y pipe you will need to get a new one, either a ory or a catted Y. What catback do you have? It should bolt up without any issues and to be honest depending on ur catback it probly wont be much louder.
J

i disagree. headers and orp is going to be alot louder even on a stock exhaust.

**Johns00Z28** · 09-04-2007, 06:58 AM

Is there a true dual setup that would be pretty tame at idle and cruising speeds?

**Bottesini** · 09-04-2007, 09:01 AM

I would suggest something like the Borla adjustable catback. I am not sure how it is on an LS1 but for my LT1 it was great, if I wanted it loud then I could have it, but it could also be relatively quiet when I wanted. Biggest drawback though is Borla is very proud of their product and it is expensive.

**Johns00Z28** · 09-04-2007, 09:16 AM

Originally Posted by Bottesini

I would suggest something like the Borla adjustable catback. I am not sure how it is on an LS1 but for my LT1 it was great, if I wanted it loud then I could have it, but it could also be relatively quiet when I wanted. Biggest drawback though is Borla is very proud of their product and it is expensive.

I would consider going with a nice catback but I can't justify spending $700-$800 for just a catback. I can get a true dual setup from texas speed for half the cost and more performance. I just don't know how loud it'll be.

**9t8z28** · 09-04-2007, 02:37 PM

Originally Posted by Johns00Z28

Is there a true dual setup that would be pretty tame at idle and cruising speeds?

The Bassani setup isn't to loud, but any dual setup is gonna be expensive. The TSP duals are gonna be real loud.

**Wheeler99WS6** · 09-08-2007, 03:51 AM

Originally Posted by Johns00Z28

I would consider going with a nice catback but I can't justify spending $700-$800 for just a catback. I can get a true dual setup from texas speed for half the cost and more performance. I just don't know how loud it'll be.

I was thinking the same when I purchased the TSP true duals, they are cheaper and net you slightly more gains due to the x pipe.

Originally Posted by 9t8z28

The Bassani setup isn't to loud, but any dual setup is gonna be expensive. The TSP duals are gonna be real loud.

I have the TSP TD's with the Sweet thunder mufflers and it is only loud when I want it to be. at idle it is docile, it is obvious you have a louder exhaust than stock but still docile at idle and regular cruising. Now once you take it to WOT it will scream like a banshee though. I personally love it!

**Johns00Z28** · 09-08-2007, 09:12 AM

Originally Posted by Wheeler99WS6

I have the TSP TD's with the Sweet thunder mufflers and it is only loud when I want it to be. at idle it is docile, it is obvious you have a louder exhaust than stock but still docile at idle and regular cruising. Now once you take it to WOT it will scream like a banshee though. I personally love it!

I'm happy to hear that it's not ridiculously loud all the time then. I called TSP this past week and the guy actually recommended the dynomax bullets saying they had the deepest, lowest rumble which is certainly appealing to me. Have you heard both mufflers? If so how would you compare them?

**Wheeler99WS6** · 09-09-2007, 01:38 AM

a local guy has the dynomax bullets, I think it sounds almost the same. His may be a little louder than mine but then again he has a mild cam in his car with a slight lope and his idle is set at a higher rpm than mine. I was going to get the dynomax but they were on back order at the time so I opted for the sweet thunder.