does anyone know how an ls1 will sound like,when it has a kooks headers and 2.5 inch down pipes,and borla cat back with (no cats),is it going to be undrivebul??,what about the preformance? is it going to ba high?

 

In Michigan I removed the Cats and no problem. In California they are stricter with that type of thing aren't they?

I suspect you will want to keep the Cats for a daily driver. Also, there was a post in the Racing Lounge forum in the last 2 weeks regarding exhaust in California.


Hope that helps a little.

 

ur not going to have down pipes with long tubes and a catback. u will have to get a catted ypipe or a offroad ypipe (no cats) and that will hook up to your borla catback.

 

yea the cats that im talking about is an off road cats,and my trans is not a daily drive car its just a toy,,so what do you guys think,,is it toomuch? or shall i stock with only down pipe or just headers??cuz doing both ofthem i dont know ,just seems 2 noise is it??,i removed my cats long time but i had them back because of the service engine light,so now i know its only the o2 sensors that i shall get.....

 

Better grammar would help us understand more easily.

With no cats borla is raspy. I wouldn't run borla without cats because of that.

 

It will be VERY loud and sound like crap! The best way to keep it sounding decent is to keep cats on the car. Also, since you’re in California you will have a hard time passing emissions with any type of long tube header system. The only “legal” way to do headers in CA is shorty headers with a C.A.R.B. number, however they won’t give you any improvement in sound or power so don’t bother. If you think you can get around the emissions issue then find a header system with a y-pipe that has cats in it. Something like the SuperMAXX kit, or if you want to run mid-length headers you could use the MAC setup with the cat y-pipe. Others can be made to sound good too, but in my personal opinion, none of the systems available without cats sound any good.

 

i wouldn't even touch the car if its an anniversary trans am. thats a collector car don't touch it leave it stock and buy another trans am and do mods to that. the 30th anniversary trans am is awesome, nice ride.

 

It's not like it's an investment quality item, and most of us can't afford to buy multiple muscle cars.

 

It'll probably sound about like that fart I let a few minutes ago that ran me out of my office.

You'll gain on the high end, probably lose a tad on the low end.

 

guys the car is not going to be driven in cali,or even IN THE UNITED STATE,i`m shipping this car TO ANOTHER COUNTRY where no body CARE ABOUT EMSSION,MY QUESTION IS WHAT IS THE BEST HEADERS AND Y PIPE THATLL WORK WITH MY BORLA,AND SHALL I TAKE MY CATS,WOULD IT BE BETTER SOUND WITH OUT CATS?,,and thanks Tim98Z28 for the advice and MR.blkZ28spt ,IS THAT CLEAR ENOUGH??

 

There is no "best headers and Y-pipe that will work with your borla". Well, I suppose the agreed upon best headers (money no object) are either QTP or Kooks. The best answer we can give you is to buy QTP/Kooks with a catted Y-pipe.

 

Here is my advice. Listen to everyone of these sound clips and decide for yourself what sound you like.

http://ls1sounds.com/borla.htm