Corsa vs Magnaflow Catbacks

[9Dall1]

I've got a 2010 GMC Yukon with the 5.3 and I was looking into cat backs to do an upgrade. I was leading towards getting the Corsa but haven't found a ton of videos of either. Anyone have any inputs on the two?

Magnaflow - https://www.magnaflow.com/products/...ies-cat-back-performance-exhaust-system-16564

Corsa - https://www.corsaperformance.com/co...0-sport-cat-back-14912?variant=31145959981142

 

[iamdub]

I don't believe them claimed power gains. Besides, stepping up the pipe size would mostly increase top end power, and possibly sacrifice a little low end power. Regardless, any of it is likely nothing you'd feel.

Also, unless your current piping is rusted or otherwise damaged or you just wanna be able to say "I bolted it on myself", I'm not a fan of the DIY cat-back kits. You can accomplish the same with a $30-$50 muffler (stainless steel MF clone) and having a shop or a friend weld it in. Add ~$20 or higher if you want fancy tips and a little more for pipe and labor if you wanna delete the resonator.

Both the MF and Corsa are straight-through designs. The MF muffles by using fiberglass and steel packing around a perforated core to absorb sound. The Corsa is like a few Helmholtz chambers rolled into overlapping tubes so it muffles by reflecting sound waves against themselves to cancel them out and attenuate the sound. It may also have some packing, but I can't confirm. Sound-wise, both muffle just fine and have nice sounds that are fairly similar. The Corsa is considerably more aggressive unless you get a smaller (shorter) MF. Performance-wise, both flow the same since the actual gasses are just traveling through a 3" diameter perforated stainless tube inside a can in either design.

 

[Charlie207]

BB Performance mentioned that on a stock vehicle, a catback provides zero performance gains over the OEM system.

 

[salisburyv]

i have a magna flow cat back. 14" muffler. Sounds perfect. not too loud, no drone on the highway. good purchase

 

[Charlie207]

Explains a Corsa muffler tech:

Looks cool, but heavy.

 

[ls1frc]

I have the corsa with headers and a resonator. It sounds amazing, I get compliments all the time. Even the cop who gave me a ticket recently for out of date inspection loved it hahaha

Without the resonator it is THROATY, I had to tone it down a bit with the vibrant resonator.