Anyone running the Modern Performance DP?
#12
https://www.chevyhhr.net/forums/hhr-ss-45/cobalt-dp-29654/
YES for the 5 speed trans, they all interchange.
HHR auto DP is 1" longer, also the HHR auto 1st cat is in a slightly different location & angle.
A 5 speed factory DP in an auto HHR will have the 1st cat slightly rubbing againest the sway bar. And the stock cat-back will rub at the gas tank, unless you add 1" in length of the cat-back in the resonator section of the stock cat-back.
The Magnaflow cat-back will work ok, no adjustment needed.
excellent 'all-you-need-to-know' thread on downpipes.
http://www.cobaltss.net/forums/showthread.php?t=198998
YES for the 5 speed trans, they all interchange.
HHR auto DP is 1" longer, also the HHR auto 1st cat is in a slightly different location & angle.
A 5 speed factory DP in an auto HHR will have the 1st cat slightly rubbing againest the sway bar. And the stock cat-back will rub at the gas tank, unless you add 1" in length of the cat-back in the resonator section of the stock cat-back.
The Magnaflow cat-back will work ok, no adjustment needed.
excellent 'all-you-need-to-know' thread on downpipes.
http://www.cobaltss.net/forums/showthread.php?t=198998
#14
https://www.chevyhhr.net/forums/showthread.php?t=29654
YES for the 5 speed trans, they all interchange.
HHR auto DP is 1" longer, also the HHR auto 1st cat is in a slightly different location & angle.
A 5 speed factory DP in an auto HHR will have the 1st cat slightly rubbing againest the sway bar. And the stock cat-back will rub at the gas tank, unless you add 1" in length of the cat-back in the resonator section of the stock cat-back.
The Magnaflow cat-back will work ok, no adjustment needed.
excellent 'all-you-need-to-know' thread on downpipes.
http://www.cobaltss.net/forums/showthread.php?t=198998
YES for the 5 speed trans, they all interchange.
HHR auto DP is 1" longer, also the HHR auto 1st cat is in a slightly different location & angle.
A 5 speed factory DP in an auto HHR will have the 1st cat slightly rubbing againest the sway bar. And the stock cat-back will rub at the gas tank, unless you add 1" in length of the cat-back in the resonator section of the stock cat-back.
The Magnaflow cat-back will work ok, no adjustment needed.
excellent 'all-you-need-to-know' thread on downpipes.
http://www.cobaltss.net/forums/showthread.php?t=198998
#15
And the stock cat-back will rub at the gas tank, unless you add 1" in length of the cat-back in the resonator section of the stock cat-back.
The Magnaflow cat-back will work ok, no adjustment needed.
The Magnaflow cat-back will work ok, no adjustment needed.
or in the DP you order. You can ask your DP maker to add an inch.
#16
So if im doing just the DP i need to ask Modern Performance to add 1inch to the length of their downpipe since i'm automatic?
This seems to be more a pain than it's worth since i can't buy parts that bolt right up, Damn auto
This seems to be more a pain than it's worth since i can't buy parts that bolt right up, Damn auto
#17
Honestly, just make sure you tell them that it's going into an HHR SS w/ an auto tranny when you place your order. It's that simple!! Take a look in my gallery as I have pics of the exhaust install and you can see how the DP fits (well, Hahn's version anyway lol). I knew NOTHING of "shorter or longer" DP's when I ordered mine last year and haven't had any issues with the DP hitting the sway bar (I don't see how that's possible?? but W/E) nor any rubbing up front. Like I said before the only issue I had was with the hanger over the axle slipping off, but I fixed that and haven't had any more issues. My cat back has never rubbed/hit the gas tank either. Just my .02. Like I said, make it clear what it's going into when you order and you should be fine.
Later
Allex
Later
Allex
Thread
Thread Starter
Forum
Replies
Last Post
xzombiex66
General HHR
10
07-29-2009 04:58 PM
Don Juan
2.2L Performance Tech
10
03-13-2008 06:28 AM