Firetong exhaust on MT07

[Pierre Micallef]

I have a 2020 MT07 and recently installed a Firetong exhaust system. This is backfiring heavily and also has become a fuel guzzler since I installed it....I love it's look and sound but am at a dilemma what to do.... Anything can be done to reduce backfire and possibly improve fuel consumption?

[00RAH]

Find a dyno shop and get them to tune it for you. Then come back here and tell us what happend. 

Edited August 18, 2022 by 00RAH

[Triple Jim]

Is the oxygen sensor installed and connected correctly?