So why I'm I being careless?, I've had a cat and no cat, no difference in sound. There's too many v6 guys with dyno runs to prove that cat kills performance, and a 5 hp gain without it..
Rasp is always going to be there, not has much with borla and the cam.
Videos with a phone always suck, they rarely sound the same as in person, but maybe I'll try and make a new one some time this weekend.

 

That was supposed to be "catless"!

Nope! No rasp with the Borla Adjustable! FTW!

Sound matters much more than a tiny bit of power -- 5 RWHP? I doubt it, show your dyno proof!

 

My bad 2 hp no tuning.


http://www.camarozone.com/forum/f16/...-specs-135701/

An like I said, sound was the same with and without the cat

 

Well something is not clear there, he does not say if it was an OEM cat delete or an aftermarket/high flow cat delete. Also, he first said the car was tuned prior to deleting the cat, so was the tune removed after removing the cat and he went back to a stock tune? That is unclear.

2nd, he has a LOT of performance mods that make his situation different than most V6 Camaros since many of those are power additive/amplifying:
Camaro Zone - Camaro Forums and News - CincyBird98's Album: '98 Pontiac Firebird

Of course a cat is a restriction of sorts, but I maintain the sound smoothing is worth it vs. rasp! I had terrible rasp on my old '95 3.4L Camaro when I cat-deleted and added a straight pipe. On that car I noticed a power boost going from the OEM cat to a higher flow unit, but noticed no power when cat-deleting…

 

I'm sure it my not be worth it on a stock motor, but like him, I'm not stock anymore, other than having my heads reworked,I have all the bolt ons.

And I'm pretty sure he had a high flow cat. That his before he finally upgraded to a mach 1

 

I really liked the Flowmasters I had on mine