PERFORMANCE!!! High flow cats/mufflers? Looking for testimonials/advice.

[flair666369]

After looking at prices, I have decided that it was too expensive to test out all or even most of the major name brands for performance gains. So the question still remains, WHO PUTS OUT THE MOST HP GAINS???

[Marsal420]

Lol, Were right back in the same boat, hmmm I know there has to be a way to get this answer out .......... Let me make a few calls and hopfully i can get some answers. Will post the information i get later on today.

[Marsal420]

So.. After spending most of my day in the house i got a few calls out and between today and yesterdsays here is exactly what i found out.

Every entry is based on each companys information. *HOPFULLY IT HELPS*

Jegs- All mufflers ( Flowmaster,Magnaflow,Dynamax,CherryBomb ) will give you the same performance but the sound that you would get from each muffler varies. They also told me that by getting Mandert bent exhaust pipes it will increse airflow because there is no change in the size of the pipeing.

Summit- They pretty much stated the exact same thing as jegs did.

Midas- Since they clearly sell Magnaflow muffles there all for it but the guy told me that if i want to actually see an increase get a exhaust kit. * manderat bent piping flows the best *

Cliff's Muffler Shop- Told me to go straight pipe , lmao! figure that was funny to add on here

That is all the places i called and got a answer that was actually worth putting on here .

Hopfully some of the information helps, but i think im gonna get myself a nice set of either Magnaflow or CherryBomb there both have a nice *RUMBLE* to them not a crackle type muffler like Flowmaster is. But i gotta wait and see if anything else developes from any of the informaiton. But im pretty much set on One of the 2.

[flair666369]

Here's a wrench in the gears; check out www.borla.com they seem to be the only ones driven by performance just as much if not more than sound. Read the FAQ, there is a ton of great info. Only one problem, the price!!! But if it's as good as they claim, and from what I hear after asking around, you get what you pay for. I'm going to be calling them on monday to figure out the difference between the different universals since how they don't make a kit for our trucks. But i think i found the mufflers I'm going to get.

[67malibu]

As I said before, Borla and Magnaflow will definitely sound better than Flowmaster. I can't say I've heard a set of Borlas on a truck before but I have heard the before (stock) and after on a Camaro SS and a Z06 vette. At least on high output engines, the Borlas sounded all out MEAN. They'll last longer than the vehicle but they are one of the most expensive options.

[Marsal420]

Yeah Borla is a very expensive option, considering just for a kit for my 2002 Impala it runs around $1,250. And, really im not sure if i wnat to go that route just yet, i might have to settle for Magnaflow's or even a nice set of CherryBombs, since they are more around my price range.

[jdmccright]

Yes, this thread is a bit old but I've seen little to nothing on Dynomax exhausts for the C/K. I've just installed a split dual cat-back on my '95 2wd with 350 and 3.73:1 rear and OEM headers and downpipes to the cat.

Compared to what it had before (it had the original exhaust but with a Quietflow3 muffler welded in), idle sound is deeper but not much louder in-cabin with a nice, low burble. Light acceleration doesn't increase loudness much but go more than 1/3 to 1/2 throttle and it emits a low-pitch rumble that is defintely louder. Highway speeds is a bit louder than before, but as before if you keep it cruising and stay out of the throttle, the noise level is good. Not bwappy at all. Stays pretty quiet at 65 mph & 2000 rpms. Again, the low note is still there but doesn't overpower all other noises such as tires, radio, wind, etc...real good for those who go long trips.

Can't tell if there's much performance improvement...I don't drive the truck enough to really tell, but it feels a little more responsive from a stop. As I work it, I'll try to update this.