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Discussion Starter · #1 ·
Has anyone found a way to run high flow cats with the XR-1 long tubes? I am running these with the ATAK catback and love it most of the time. But I noticed I have lost 6 mpg with the catless mids. I don't mind cause you don't get power with out using more go-go juice. But running at 2000 rpms at 60 when I used to run that 80 really gets to me.

2012 Dodge Challenger R/T classic Auto
BBK 85 mm TB
Borla XR-1 LT
Borla ATAK Catback
Billet Tech Catch Can
Diablo Intune running Diablotoona Custom Tune
3.92 Gears
LMI Airhammer CAI
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