Your welcome, I think diablosport 2011 2012 support is out now, 2013 support should be along soon enough, I would also hold off on any serious mods untill support is up to speed, sometimes companies rush product to market without having cracked all the mapping, then do revisions that can be downloaded to your tuning device at a later date.

but I digress, this thread was about HP and Exhaust, MBRP make a nice sounding exhaust for challenger with 3 inch pipes cat back, they claim 24 hp gain.

 

Doing any of this will not net you any appreciable fuel mpg increase. Best mileage you will get is stock and a lite foot.

 

I am trying to figure out the same thing on getting more power out of 2013 challenger rt. All i've done so far is install a flowmaster american thunder cat-back exhaust and an AME cold air intake. Next i'm thinking on getting some flowmaster headers. What's better short or long tube?

 

• Quote:

  Originally Posted by BigDog68

  I am trying to figure out the same thing on getting more power out of 2013 challenger rt. All i've done so far is install a flowmaster american thunder cat-back exhaust and an AME cold air intake. Next i'm thinking on getting some flowmaster headers. What's better short or long tube?

Short tubes are said to give better low end torque, Long tube headers are touted to give better low and High end horse power gains, but there are some down sides to long tubes, boils down to emissions. Shorty headers are emissions legal and long tubes usually aren't.

Personally I went for JBA short tubes, High flow cats, & Arrington phase six heads. You can use your own cats,

I think you could also put SRT8 headers, that may be just as good as short tubes.

Some guys just cut to the chase and put a blower on stock motor, like a magna charger.

regards
rhys