Personally i though the borla sounds like ****!
Try Corsa catback, catted Y pipe, LT headers. I had the ORY on mine and the sound under acceleration at a higher gear had this "poping" sound. After i installed cats in the ORY it sounded amazing! Screamed at 5k+

 

get a set of longtube headers arh i recommend and get the y pipe with the high flow cats.and it will sound what your looking for.I was in the same shoes as you did it and it sounded much more aggresive.

 

Borla sounds great! If you think it's too quiet get longtubes and a y-pipe with high flow cats. End of discussion.

If you don't plan on ever doing headers, go with LM1

 

The Borla's will blow out and get louder with time. Put a few miles on em before you swap them out. Also the longer the muffler the quieter they are. +1 on the Y or H pipe and headers.......

 

Ya if it's brand new your gonna have to put a few miles on it before it gets a lil louder. My magnaflow was super quite when I first installed the catback. Now with headers and y pipe and no cats it's quite a bit louder. Just takes some time.

 

I have the Hooker Aero Chamber muffler, Very nice deep aggressive tone.

 

Good point on the breakin...I have no idea how many miles are on this catback. Anybody install cutouts in the stock y pipe?

 

OP has this system guys.

http://www.ws6project.com/user_stor/...ges/140028.jpg

 

Yup, that's it.

 

So then... this should be moved here... https://ls1tech.com/forums/generatio...rnal-engine-6/


Am I the only person who gets annoyed when dumbasses put GEN III B.S. in GEN IV...

YOU HAVE AN LS1!!! thats all..

 

+1 for hooker aerochamber. Very deep, comfortable at cruising and loud when you mash the gas.

 

This and a cutout...

 

get some TDs....

 

I am currently looking for a used LM1 kit. Let me know if anyone would like to trade.

 

Time for some headers dude.

 

If your Borla catback doesn't look anything like what one of the previous posters pic looked like, then I guess you don't have the set with the adjustable plates. Which is what you should have got. I have a wide open plate on my Borla, and it is by far the loudest fbody (bolt ons only) I have ever heard that didn't have true duals, and I have high flow cats. I'm not trying to brag, just being honest. I personally love the aggressive tone Borla has and the ability to change plates. When I switch to the second smallest plate, it's nearly just as loud but cuts out some of the rasp.

If you don't want Borla though I'd vote for Corsa.

edit: This is almost exactly what my car sounds like, I have Kooks LTs as well as the borla catback

http://www.ls1sounds.com/Borla/borla...ndY_LS1Z28.wmv

 

I've got a LM1 with some bullet muffler and high flow cats and I love it, loud and mean....the bullet muffler in mine is realy just a 15 or so inch peice of expanded pipe, 3 inch to just over 4 inches....no loss in flow here LOL

 

What did you do with the stock LM1 muffler?

 

Go with Bassani. sounds awesome on a ls6 vette

 

Yeah really.. Try it with LT's and ORY... Equal to LM1 with LT's and ORY with no plates. Wasn't TOO loud, just sounds like crap after a while. Take the plates out or put a cam in the car if you can't ditch the cats..

And c/o's typically don't sound that great on log manifold cars. Maybe LT's and catted Y.