Chevy HHR Network

Chevy HHR Network (https://www.chevyhhr.net/forums/)
-   2.4L Performance Tech (https://www.chevyhhr.net/forums/2-4l-performance-tech-14/)
-   -   Question about exhaust (https://www.chevyhhr.net/forums/2-4l-performance-tech-14/question-about-exhaust-50202/)

Hotstuff 04-10-2014 12:35 PM

Question about exhaust
 
So I have a few questions about changing my exhaust.

1. If I remove my resonator, what effect will this have on the engine back pressure? Will this effect my fuel economy? What difference in sound if any will this produce?

2. If I were to remove the resonator and install a new muffler, what kind of changes will this have on fuel economy and engine performance?

3. What kind of muffler should I choose should I go this route? Keeping in mind I am not looking in any real performance gains, I just want to get better sound from the engine while not having to muck about with computers.

Thnx
Hotstuff

firemangeorge 04-10-2014 02:40 PM

If you remove the resonator, you'll mostly get that popping, sputtering, cracklely, "fart can" noise.
I would advise to leave the resonator on and go with a performance style muffler.
I have a Flowmaster HP2 shorty, but mine is a SS, so not sure how that would sound on your's. One thing you want to avoid is a muffler that will have that "drone" noise at highway cruising speeds. Very annoying.
I don't get that drone with the Flowmaster.

Fuel mileage. Probably won't make any noticeable change in which ever way you choose.

Hotstuff 04-10-2014 02:50 PM

Yeah I'm not too concerned over the sputtering, mostly over what changes it will make to engine performance, if its a cat back system it won't really change fuel economy right?

badassbowtie 04-10-2014 04:08 PM

The resonator is designed to "tune" the exhaust and remove sound waves from the exhaust. Mine is removed on my SS and it made it a little different, but I really can't how much different...It's not much...From what I understand, resonators aren't much different from a simple cherry bomb muffler

chefhhr 04-14-2014 09:23 AM

You'll see no difference removing the resonator besides a little extra sound. If you add a nice intake the sound is significantly louder with the resonator gone. As for extra mpg or power...that's a big negative.

Swapping out the muffler got no extra power or extra mpgs for me on my 2.4. I did the resonator delete first then about 6 months later I wanted more sound and added a Magnaflow. It's pretty loud...not ricey at all...only recently started cracking a little under decelation but it sounds good.


All times are GMT -5. The time now is 03:14 AM.


© 2024 MH Sub I, LLC dba Internet Brands