exhaust query

northcreek

northcreek

Original poster
Member
Jan 15, 2012
3,390
WNY
My friend took the resonator off of his 9-7x 5.3 and says that he can't perceive any difference,anybody out there to comment on this? I would like to remove mine and configure a dual exhaust only because the aftermarket exhaust people have decided that 5.3 people do not deserve dual cat backs.:frown:
 
M

McGMT

Member
Jun 17, 2012
621
northcreek said:
My friend took the resonator off of his 9-7x 5.3 and says that he can't perceive any difference,anybody out there to comment on this? I would like to remove mine and configure a dual exhaust only because the aftermarket exhaust people have decided that 5.3 people do not deserve dual cat backs.:frown:
Click to expand...

Well really all it is there for is to reduce resonance (noise) so... Yea, I don't see it freeing up much of any HP, just look at that massive muffler sitting under there, thats where a big chunk of HP is really going...

But I am sure someone that's done it is going to say it does but really, Butt HP is different than dyno HP... :raspberry:
 
Decembersend

Decembersend

Member
Dec 3, 2011
316
northcreek said:
My friend took the resonator off of his 9-7x 5.3 and says that he can't perceive any difference,anybody out there to comment on this? I would like to remove mine and configure a dual exhaust only because the aftermarket exhaust people have decided that 5.3 people do not deserve dual cat backs.:frown:
Click to expand...

I'm not an expert when it comes to exhaust but I believe you can only do duals after the muffler. I have duals on my 4.2 but they're not true duals (Cat back) and they sound great. As for hearing a difference their is quite a difference HighVoltage posted a video on the OS and his truck sounded mean.
 
Boricua SS

Boricua SS

Member
Nov 20, 2011
3,080
Ohio
I've heard a 4.2 in person with the resonator delete, and there is very subtle to no difference at all in noise... I've also heard a 6.0L SS with the resonator delete and it was noticibly louder.. if your thinking in terms of HP numbers/gains.. don't... our factory exhaust across the platforms are very free flowing and doesn't rob much HP... until you start making stupid power, will an exhaust benefit you or net you some HP... the 5.3 motor is essentially the same as the 6.0.. so if you're going for sound, just chop off the resonator, replace your muffler and call it a day...
 
northcreek

northcreek

Original poster
Member
Jan 15, 2012
3,390
WNY
Boricua SS said:
I've heard a 4.2 in person with the resonator delete, and there is very subtle to no difference at all in noise... I've also heard a 6.0L SS with the resonator delete and it was noticibly louder.. if your thinking in terms of HP numbers/gains.. don't... our factory exhaust across the platforms are very free flowing and doesn't rob much HP... until you start making stupid power, will an exhaust benefit you or net you some HP... the 5.3 motor is essentially the same as the 6.0.. so if you're going for sound, just chop off the resonator, replace your muffler and call it a day...
Click to expand...

I'm more interested in appearance.The Denali rear valance has a lower profile which is cutout for the ehaust tip.A similar cutout could be made on the other side and the symmetry of it would I think look better.A little extra rumble would be nice too.
Pity that with two banks of cylinders we have to settle for pseudo duals:frown:
 
Mooseman

Mooseman

Moderator
Dec 4, 2011
26,333
Ottawa, ON
I cut mine off and it is a little louder. I do hear it inside the truck but it's barely noticeable.

Some people complain about the drone at highway speed. It doesn't bother me even if I do notice it.
 
J

Jkust

Member
Dec 4, 2011
946
The 9-7 sits lower but you can't see as much of the spare tire or resonator. I don't notice it enough to care to cut it off. It (the 5.3) already sounds good as-is in my ears.
440-Horsepower SLP TrailBlazer SS - Performance Trucks - Truck Trend
Just for fun, take a look at the above article that talks about a $2800 mod package to the TB SS that added 40hp including a true dual exhaust and somehow the dual cut out of the bumper for the second exhaust. I tell you it bums me out that even the little Chevy Equinox and the Chevy Traverse and similar have dual exhaust tips in the bumper.
 
Wooluf1952

Wooluf1952

Member
Nov 20, 2011
2,663
Milwaukee, Wisconsin
If I'm reading that article correctly, it is not true duals. It's called a dual outlet system.
 
J

Jkust

Member
Dec 4, 2011
946
Wooluf1952 said:
If I'm reading that article correctly, it is not true duals. It's called a dual outlet system.
Click to expand...

I was wondering on that too. Doesn't make sense. I'm really wondering how they got the second cut out on the bumper.
 
Wooluf1952

Wooluf1952

Member
Nov 20, 2011
2,663
Milwaukee, Wisconsin
Jkust said:
I was wondering on that too. Doesn't make sense. I'm really wondering how they got the second cut out on the bumper.
Click to expand...

I believe SLP (or someone) sells a bumper with dual cut outs.
 
Boricua SS

Boricua SS

Member
Nov 20, 2011
3,080
Ohio
Wooluf1952 said:
I believe SLP (or someone) sells a bumper with dual cut outs.
Click to expand...

yes, there are vendors that sell the new rear valance with dual cutouts... i think hes on here as well...

edit: a rear valance for the SS platform... i havent seen a new bumper/lower valance for a regular TB or Voy or 9-7
 
northcreek

northcreek

Original poster
Member
Jan 15, 2012
3,390
WNY
Jkust said:
I tell you it bums me out that even the little Chevy Equinox and the Chevy Traverse and similar have dual exhaust tips in the bumper.
Click to expand...

And even KIA's:no:
 
Jayman

Jayman

Member
Mar 4, 2012
96
northcreek said:
I'm more interested in appearance.The Denali rear valance has a lower profile which is cutout for the ehaust tip.A similar cutout could be made on the other side and the symmetry of it would I think look better.A little extra rumble would be nice too.
Pity that with two banks of cylinders we have to settle for pseudo duals:frown:
Click to expand...

Just wondering what you ended up doing. I don't care about true duals either, however if one can remove the can, re-route some pipe, cut out the valence, and add tips mostly for appearance, I'd be interested in doing this too.
If you have pics too that would be great!
 
northcreek

northcreek

Original poster
Member
Jan 15, 2012
3,390
WNY
Jayman said:
Just wondering what you ended up doing. I don't care about true duals either, however if one can remove the can, re-route some pipe, cut out the valence, and add tips mostly for appearance, I'd be interested in doing this too.
If you have pics too that would be great!
Click to expand...

I ended up liking it the way it is for now. I might do something if I have any issues with the present system. Now that I have the AFM defeated I could possibly adapt a dual system designed for an SS and wouldn't have to worry about the ricer sound in AFM mode....Mike.
 
O

oh05ext

Member
Dec 7, 2011
166
Search my username I shojld have a video as a reply to a post somewhere if I remember right.I cut the can off ours years ago
 
dla442

dla442

Member
Mar 31, 2012
249
grand rapids, mi
Wooluf1952 said:
If I'm reading that article correctly, it is not true duals. It's called a dual outlet system.
Click to expand...

I just bought new muffler and res made by walker exhaust systems for 228. Far cheaper than the 700 and 500 for the two gm parts
 
Jayman

Jayman

Member
Mar 4, 2012
96
dla442 said:
I just bought new muffler and res made by walker exhaust systems for 228. Far cheaper than the 700 and 500 for the two gm parts
Click to expand...

Can you specify the part numbers for the Walker products? Also can you take a picture of this setup? I'd like to see how the pipes are routed and where the resonator is installed.

Thanks in advance!
 
dla442

dla442

Member
Mar 31, 2012
249
grand rapids, mi
Jayman said:
Can you specify the part numbers for the Walker products? Also can you take a picture of this setup? I'd like to see how the pipes are routed and where the resonator is installed.

Thanks in advance!
Click to expand...

Walker #'s are 55272 for the resonator assembly and 21409 for the stainless SS quiet flow muffler. Advance auto actually has 20% off for online orders and are mailed to your home. Couldn't find that set up cheaper anywhere else. After installed in will send a pic
 
Jayman

Jayman

Member
Mar 4, 2012
96
dla442 said:
Walker #'s are 55272 for the resonator assembly and 21409 for the stainless SS quiet flow muffler. Advance auto actually has 20% off for online orders and are mailed to your home. Couldn't find that set up cheaper anywhere else. After installed in will send a pic
Click to expand...

Sure. Didn't realize it wasn't installed. When you send pictures please comment on the sound too.
 
Jayman

Jayman

Member
Mar 4, 2012
96
dla442 said:
Walker #'s are 55272 for the resonator assembly and 21409 for the stainless SS quiet flow muffler. Advance auto actually has 20% off for online orders and are mailed to your home. Couldn't find that set up cheaper anywhere else. After installed in will send a pic
Click to expand...

Just saw that this is not a dual system.
Thanks
 
Mooseman

Mooseman

Moderator
Dec 4, 2011
26,333
Ottawa, ON
Have a look inside the muffler if you still can. Does it neck down? Others have commented that on Walker mufflers for the I6, the size is reduced inside the muffler.
 
You must log in or register to reply here.

Forum Statistics

Threads
23,808
Posts
643,662
Members
19,540
Latest member
hillbilly

Members Online

Total: 595 (members: 3, guests: 592)

Share This Page

Share This Page
Top Bottom