ThunderMax is an industry award winning, performance ECM designed specifically for EFI equipped Harley Davidson® motorcycles. This highly advanced, stand-alone tuning system utilizes proprietary AutoTune technology with wide-band oxygen sensors to deliver
* Does Not Fit Dyna Lowrider S (Throttle-by-Wire)
* Does Not Fit CVO Breakout Models. (Throttle-by-Wire)
Exhaust Note: On 2012up Softail & Dyna models and 2014up Sportster models, the OEM exhaust system has 12mm o2 ports. The factory 12mm exha
