Borla with hooker headers no cat

**94redmaro** · 01-12-2007, 05:32 PM

just purchased a z28 already modded

okay Im not really feelin the idol noise and rev of the borla, its a little too loud, and to add to that I have no cat, and also have hooker headers...and when im idoling i hear weird noises and my mechanic told me its probably the headers tapping under the hood or whatever......whats another route i could go as far as exhaust to just have a smooth agressive note, instead of a rough agressive exhaust note.....should i just put a high flow catylic converter on of some sort? remove the headers? or remove the borla and go with something else? let me know fellas...

**BlackLT1Z28** · 01-12-2007, 06:17 PM

You could replace the borla with magnaflow. Its generally more mellow than the others. Removing the headers would be a BAD idea. Adding cats wouldn't make that big of a difference. But replacing the catback seems like a reasonable and logical choice. Check out www.ls1sounds.com for sound clips of different setups.

**94redmaro** · 01-12-2007, 07:29 PM

okay I figured that i would stay with the Borla, and probably put a cat on their...you sure a magnaflow cat wont make a difference in exhaust note and clarity? if not i think i might have to go with magnaflow, from what i hear magnaflow exhaust gives a clean exhaust note...not to rumbly...

**94redmaro** · 01-12-2007, 07:33 PM

finally got a pic of my car up

**5.0THIS** · 01-13-2007, 02:06 AM

If it's the Borla with the pre-muffler y-pipe, then you can get plates that bolt in there, that duct varying amounts of exhaust through the muffler, and make it quieter or louder. You should put a cat in the car anyway, as there is almost nothing to be gained over having no cat (as opposed to a high flow cat). And then there's no obnoxious smell.

**Z06-Goose** · 01-14-2007, 07:08 PM

Originally Posted by 94redmaro

just purchased a z28 already modded

okay Im not really feelin the idol noise and rev of the borla, its a little too loud, and to add to that I have no cat, and also have hooker headers...and when im idoling i hear weird noises and my mechanic told me its probably the headers tapping under the hood or whatever......whats another route i could go as far as exhaust to just have a smooth agressive note, instead of a rough agressive exhaust note.....should i just put a high flow catylic converter on of some sort? remove the headers? or remove the borla and go with something else? let me know fellas...

I think you probably have a leak somewhere, most likely at the heads.
So, I think the set up you have is fine. I have had Hooker LT's, and a Borla cat-back with the smaller holed plate, and sounded great.
I now have Hooker LT's and on a true-dual chambered exhaust system. The Chambered mufflers are 18" long

You can hear it HERE

(It takes a bit to load)

**94redmaro** · 01-14-2007, 08:48 PM

Thanks, my problem was a bad wire sitting to close to the headers, which was causing hesitation on take off, and in between 1000 ,and 2000 rpms....I had a whole MSD set-up in my car, but opted to go with Taylor wires this time instead, installed them and my car is runnin like a beast...so much fun to drive