exhaust mod

[H3nightrod]

I am about to install a flowmaster exhaust on my 08 H3 alpha and my mechanic suggested I remove 2 of the 4 cat converters. The 2 without sensors. Has anyone done this mod before? According to mechanic it will allow a better deeper sound and will help with perforce. please feel free to chime in your thoughs. Thanks

 

[Paladine71]

Did a Magnaflow dual catback on my Alpha, and this didn't come up at all.

 

[Dennis]

What is this "perforce" you speak of?

 

[ReconH3]

The gains are insignificant on the V8. Remove them the day they break. I removed one that got crushed and was rattling lose inside.




"Ex Umbris Venimus"

Sent from my iPhone

 

[05Mudiak]

Yes remove the rear cats it actually let's it sound Like a v8 u will not get any codes they do nothing back there but kill the sound they more than likely don't even get hot enough most of the time to do what they r actually meant to do anyways. I pulled mine off then sold them for $120. To a local recycler. I don't think it did much for performance but it sounds 100. Times better

 

[Hans3T]

Let us know which model and size Flowmaster you get.

Also, some sound clips would be nice...

 

[Hans3T]

I pulled mine off then sold them for $120. To a local recycler

Jeez, that almost pays for the mod itself!