So I finally got around to getting the ZZP midlength header and catted DP installed on my NA 2.2L. It's ridiculously loud, like twice as loud as the stock header/dp with the Tsudo.

What should I do to fix it without buying a whole new catback? Would a good oval chambered muffler help if I were to get one welded in? It's a little raspy now but not too bad. Most of the problem is the loudness, but I might consider a bigger resonator too if it would help at all. I have no idea what I can actually fit down there.

Basically what would you guys do in my position? I don't have a ton of money to throw at it right now, so I might have to just start with a muffler and do the resonator later if that's the path I should take. Really loved the tone of the Tsudo before the header/dp went on so I'd love to get that tone back if possible.

 

I'd say add a cat.

 

The downpipe is catted. It's a 300 cell.

 

QR Resonator Series | Performance Exhaust

 

Have you actually used one? My Magnaflow glasspack I am using as a resonator was super quiet at first but now is rice loud.

 

buy a better catback....

 

They burn out over time.

 

The magnaflow or the ones in that link? I figured mine would blow out but didn't care at the time

 

Yeh, im a huge fan of their products, just very expensive. Im going to be building an exhaust for the balt using one of their stealth mufflers and that resonator, using this pipe kit.

05-10 CHEVY COBALT EXHAUST TUBING KIT

 

Thanks for the suggestion. Do you happen to know the max size resonator I could squeeze under there?

 

A measuring tape could tell you.

 

Just ordered this one; stay away from the glass packs, buy a SS round muffler

MagnaFlow Exhaust Products - For Trucks, Suv's, American Muscle, Diesel, & Sport Compact Vehicles

 

the QR212L should fit just fine, i think there is plenty of room for 22 1/2"

 

That looks like a glass packed round muffler to me. Even says it is fiber filled? Don't get me wrong my magnaflow was quiet as stock at first but eventually got loud.

 

Looks can be deceiving

The glass packs are aluminized steel mufflers

 

yep. get a stainless works muffler

 

Mine had a 26" body, and still plenty of room.

 

Thanks again guys. Will try it out when I get a chance. Super busy with school so might be a week or two.