Exhaust mods for 6.6L

[ZR2NYC]

I will tell you that the frankenf**k catback I’ve created is right between an S type and a Touring system. “Much better” was the all around consensus.

Could it be louder? Absolutely. But the obnoxious 120db startup is gone and the tone is back.

i loved everything about the "S" type except startup. it was my deal breaker. zero drone and downshifts were sweet sounding. gimme more details on the frankenf*#k.....

 

[AXE]

If you listen to the sound clips with a decent sound system with some bass (headphones) they sound close to reality. Even listening to them on the trucks sound system makes them sound good. Phones have crappy speakers.

Here's a muffler delete, sound great, but loudish. Sort of wish I would have ran this on my 6.2 for a while. Overall, I wanted it more tame for daily driving so Magnaflow was a good middle of the road.

 

[wutang61]

It would have been interesting if Corsa kept the factory resonators and just did a mid pipe replacement of the can.

The Magnaflow comes with its own resonator, but also retains the stock resonators. I wasn't sure what that was all about, but it seems to work.

Corsa does make a “pro series” option. Which would do exactly that.

i loved everything about the "S" type except startup. it was my deal breaker. zero drone and downshifts were sweet sounding. gimme more details on the frankenf*#k.....

It’s the Corsa Sport Catback with one of the “Pro Series” clamp in resonators. The bigger one. I actually have the little baby one in my garage as I bought both and was undecided.

Resonators tend to break in over time and increase in volume as the packing material… packs. and gets coated in carbon.

The end result is a system that is substantially quieter then an S Type. Start ups are much more sane but it’s not as reserved as a Touring system.

If you roll the windows down and nail it, it sounds good. It’s a nice balance to me. As you increase the volume of the exhaust on these trucks they get progressively more raspy.

I can’t stress the Tone enough, I could have something ear shattering loud as long as it sounds good. Pure volume and no tone is just noise.

I know for sure with the “Stock” Corsa system the neighborhood would quickly get irritated at the crack of dawn.

 

[wutang61]

I will also add that most of these “start up sound” issues with these trucks could be fixed in a tune. For whatever reason the factory programming just hammers them with fuel on start up.

 

[AXE]

Corsa does make a “pro series” option. Which would do exactly that.

It’s the Corsa Sport Catback with one of the “Pro Series” clamp in resonators. The bigger one. I actually have the little baby one in my garage as I bought both and was undecided.

Resonators tend to break in over time and increase in volume as the packing material… packs. and gets coated in carbon.

The end result is a system that is substantially quieter then an S Type. Start ups are much more sane but it’s not as reserved as a Touring system.

If you roll the windows down and nail it, it sounds good. It’s a nice balance to me. As you increase the volume of the exhaust on these trucks they get progressively more raspy.

I can’t stress the Tone enough, I could have something ear shattering loud as long as it sounds good. Pure volume and no tone is just noise.

I know for sure with the “Stock” Corsa system the neighborhood would quickly get irritated at the crack of dawn.

Yeah, gotta have a happy medium. There's a couple guys with Camaros in my hood with some racy exhausts. One sound like a Corsa, but the other might be straight piped or right off the headers. I can hear it a 1/4 mile away like it's 100 feet. Very anti social. I'd only run something like that on a track.

I run exhausts on my motorcycles that'll hit 105 ish db. That's about as loud as I like. One of the tracks I ran was close to edge of development and had to be under 100, db so I fabbed up some inserts for muffler outlet pipes. It worked well and got me right there with little affect on performance. That exhaust on a 2 valve Ducati L is the best sound ever, so you gotta free it up.

 

[AXE]

All these sound great, but for a daily driver, the Vibrant Street Flow is really nice. Sounds similar to my Magnaflow.

Can't beat that straight pipe tho!

This guy does a lot of great videos of his installs.

 

[ZR2NYC]

Corsa does make a “pro series” option. Which would do exactly that.

It’s the Corsa Sport Catback with one of the “Pro Series” clamp in resonators. The bigger one. I actually have the little baby one in my garage as I bought both and was undecided.

Resonators tend to break in over time and increase in volume as the packing material… packs. and gets coated in carbon.

The end result is a system that is substantially quieter then an S Type. Start ups are much more sane but it’s not as reserved as a Touring system.

If you roll the windows down and nail it, it sounds good. It’s a nice balance to me. As you increase the volume of the exhaust on these trucks they get progressively more raspy.

I can’t stress the Tone enough, I could have something ear shattering loud as long as it sounds good. Pure volume and no tone is just noise.

I know for sure with the “Stock” Corsa system the neighborhood would quickly get irritated at the crack of dawn.

all good info. thanks Wu.

 

[Kel]

Thanks for the comments and videos.

As far as start ups go, my guess is gm dumps fuel similar to the the same reason when a carburetor utilized the choke (less air in this case but net result was lower air/fuel mixture).

Nowadays you can do it with the fuel side since we can control the injector timing and duration by program. Once the engine warms up, the air/fuel ratio is increased.

 

[8ball_99]

It doesn't seem like to me the 6.6L revs up on start up like my 6.2 did. My 6.2 would have a high idle for 20-30 seconds on start up. Especially when cold. This was a cold start with the magnaflow on the 6.6L.

 

[AXE]

Thanks for the comments and videos.

As far as start ups go, my guess is gm dumps fuel similar to the the same reason when a carburetor utilized the choke (less air in this case but net result was lower air/fuel mixture).

Nowadays you can do it with the fuel side since we can control the injector timing and duration by program. Once the engine warms up, the air/fuel ratio is increased.

I think it's

It doesn't seem like to me the 6.6L revs up on start up like my 6.2 did. My 6.2 would have a high idle for 20-30 seconds on start up. Especially when cold. This was a cold start with the magnaflow on the 6.6L.

Sounds similar to my Magnaflow. I think it's sporty, but not racy.