Anyone with opinions on Hefner Exhausts?


roketman

GT Owner
Mark IV Lifetime
Oct 24, 2005
8,005
ma.
Mine is being installed Tuesday!
Can’t wait to hear it! I’ll be sure to share a video clip
 

roketman

GT Owner
Mark IV Lifetime
Oct 24, 2005
8,005
ma.
The Mark2 actually does have cats
So here’s my take on Jason Heffner‘s pipes
They sound awesome they’re much more gurgly they pop more in the overall sound is much throatier
A huge benefit is getting rid of that big exhaust can in the back my transmission is literally running 10 to 20° cooler
My engine is running cooler as well

The actual pipes that come out around the body are actually titanium as opposed to the stock titanium exhaust in which they are not.
The pipes also have a slightly larger diameter to them as well as you can see in the picture I will post.
The only way to really hear the difference is under power not sitting at an idle trying to just rev it
I Must say I am Thrilled with the build quality sounds in the cooler temps
The radio has now become completely obsolete with the new sound of the exhaust it’s pure music
 

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GKW05GT

GT Owner
Mark II Lifetime
May 28, 2011
2,755
Fayetteville, Ga.
These cars have radios?
 

Ed Sims

GT Owner
Mark IV Lifetime
Apr 7, 2006
7,852
NorCal
...The actual pipes that come out around the body are actually titanium as opposed to the stock titanium exhaust in which they are not.
The pipes also have a slightly larger diameter to them as well as you can see in the picture I will post....
I still believe the Akrapovic Ti exhaust is 100% Ti. Also the cool feature is the tips have rolled edges which in Ti are super hard to do. Very rare to see that. I spoke with the Akrapovic reps at their large booth at Monterey Auto Week.

But Heffner makes amazing stuff. I am getting their shift paddles. I can't wait to hear the Heffner sound. I can't pass California track sound limits with a non-OEM exhaust so I went with the Akrapovic.

Ed