I have the vforce tune and empire dual exaust. It backfires sometimes like when im going down a hill and the engine revs up from the braking. Any ideas why this happens and does it hurt anything. Thanks
Yes I’m running 93 non ethanol fuel.Just part of it.. are you running premium fuel? The sound is just unburnt fuel reaching ignition temp in the exhaust. That’s why you notice it more on a slow downs and descents. Not a big deal if it’s just the occasional pop. FYI.. part of the cats function is to burn those gases before they can collect and ignite. Hence why when you run a pipe or gut the cat you’ll occasionally smell a faint fuel smell.