I cant decide on which one I want to get. I have Long tubes to a 3 inch texas speed catted y pipe and a 40 series muffler welded into the stock catback. I believe its 2.75 inches.


My questions
1. Which one would make better power?
2. How loud would each one be


Thank you

 

Not sure how much power you'd actually gain from a cutout, but as far as the loudness factor goes, it depends on which loudmouth system you'd be getting. Both systems are fairly loud, I've heard the LM1 is a bit louder and deeper than the LM2. The loudmouth series in general is known for it's droning at cruising speeds, but you've got a catted y so that should help take some of the edge off. If you like how your current setup sounds, I say go with the cutout for when you wanna uncork her and be really loud and proud hope this helps, good luck with your selection.

 

better check with your state's inspection laws before installing a cutout

 

Ive also been looking into the Rumbler and LM2. I want something a bit louder than what I have now, and something that flows better.

 

I know the LM2 will flow better than the flowmaster 40 you currently have (my buddy had the LM2 on his '98 SS), it'll sound a little more aggressive than the 40 also, not sure about the rumbler though. Try this site:

http://www.ls1sounds.com/

Here, you'll find several exhaust setups on LS1 cars that you can listen to to help narrow your search. You'll also find some information that is quite useful on the site that pertains to exhaust mods and mods in general on LS1's. I've found it to be a resourceful site, hopefully it'll help you. Keep us posted.

 

Thanks alot. You have been very helpful.

 

You're welcome, LS1. Since I've joined this site, Injuneer and numerous others have helped me, I just try to return the favor wherever I can. I'll be interested to see what setup you choose, mainly because you have a catted y. I'm up here in northern IN and they don't test emissions up where I'm at so a lot of guys I know run ORYs. Find anything you like on LS1 sounds yet?

 

Yeah I am leaning towards the lm2. It seems to sound alittle better than the lm1 with headers.

 

Yeah the LM1 is a good system to run with stock manifolds, but once you start adding LT's it can get pretty raspy without swapping the muffler. The LM2 seems to be the more grown-up version of the two, nice throaty tone without as much rasp. I'm very interested to hear how it sounds on a catted y with LT's. My buddy had it on his '98 SS with pacesetter LT's and an ORY, it sounded great at idle and lower rpms, but the rasp really came out when he got on the throttle, he eventually swapped the LM2 muffler for a Borla XR-1 muffler to run his version of the borlamouth system and it sounds a lot better now. More toned down but still nice and throaty.

 

I bought the LM2 for my Z, it sounds great. My Z has long tubes w/no cats. You can hear different exhaust sounds from each manufacture on YouTube. Maybe that will help you as it did me. I bought my LM2 on ebay for 386.00 w/free shipping.

 

I am one of the few people that rasp and drone doesnt bother. I think if I had a corvette id want something tame but imo f bodies should sound how the look.

 

Good point, sir. I think with a catted y and LT's the LM2 should deliver just the sound you are looking for. The loudmouth series really are great systems, hell I'd pick one up if not for my buddy selling me his dual/dual for so cheap.

 

Update. I have decide on the cut out. I have a few job interviews coming up and IF I get either I cant pull up in a car that sounds like an earth quake.

 

I loved my cutout

 

Did they really tell you that? That's cool for the cutout though, are you getting an electric or a manual one?