Hey guys first time posting. I got the gmpp intake a couple of weeks ago (first mod ever) and am very happy with it. Now I am interested in getting the gmpp exhaust. Is there anyone that has this same combo. on their 2.4 hhr? How loud is it ? Highway drone? cabin noise? Proformance difference? Any input would be greatly appreciated.
Thanks, Zombie

 

Well had the exhaust for a week now.... wow its bad@$$, awesome upgrade.

 

Very nice exhaust perfect sound for a 4 banger not to loud and has a nice deep tone. i have had mine on since like march and i think it sounds even better after you get some miles on it.

 

What about performance and mileage? Thanks, Curly

 

It added about 3 more mpg as far as performance it sure is more fun to drive now.

 

heh heh heh thats funny. Is that what the DIC is telling you or are you actually determining your mileage with math?

 

My DIC is off less than 1 MPG atleast before I changed to a larger tire. So for my reference it is good enough. Atleast it gives me something consistant to go by. Now with my taller tires if anything the DIC is about 10% on the low side. Your results may vary.
I am also debating on what exhaust to get so keep us informed of your results.

Curly

 

Any sound clips of the GMPP exhaust?

 

still stand by my orig. mpg claims, checked the math its all good.

 

3 MPG gain is good and it improves performance and sound? Sounds good to me.