I have an 07 SRT Charger, and was hoping to get some feedback on what the effect in relation to MPG other's are seeing after removing the stock exhaust system, and changing to one of the available after market cat back exhaust mods. Please let me know if your MPG improved or not, after adding a cat back exhaust system.
I did not buy the car because I was expecting high MPG numbers. It just has a small gas tank and I would be bummed if I had to stop for gas more often.
My 06 Mag RT did not respond well to catbacks and lost nearly 3 mpg after install, however the SC tuner brought the MPG back to the original numbers.
I sure like the sound and looks of aftermarket exhausts.
Please take a second to post your findings. Thanks in advance!!
07 Super Bee 0991 * SRT8 pedals custom install by F1fan - Rick and Jina SUPERBEE's - Gloss Black Decals and Custom Paint by Maple Plain Auto Body, Leanord - Seq. Turn Signals, Flashing 3rd brake light - Billett Technology Caps - BMC Performance - DMH Cutous - NoEsp&Fan - Hotchkis Sway Bars - Saint Paul Automotive, Scott - Crazy Luck rear deck BEE - Freebird BEE on custom plates
My srt went the other way of your rt, cai and cat back exhaust seemed to help mpg, the b&g s2 knocked it back to "stock" mpg on regular mixed driving....driving it hard still only brings it down to 17.5mpg at it's worst with a heavy foot
Challenger Mods: PWR 393, Mean Street heads, Procharger D1 pushing 11+psi, SHR Nag1, DSS 1400 axles and drive shaft, SHR trans but with Paramount Dominator and stage2 valve body to finally be error code/limp mode free. BBS CH-R's and custom splitter with 2011 front spoiler. AAC SMD halos, 3K fog lights, white stripes, cervini wing, hotchkis springs, custom 10" sub w/ kicker amp, sequential tail lights.
2009 Dodge Challenger SRT8 Procharger D1 Supercharger: 10.895 @ 126.720 MPH
I have full Magnaflows.......Cats and Catback......no change on mileage.
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Just add a fuel cell in the trunk and call it a day.
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