Got power commander , screaming eagle air filter,204 cams had bike dynoed. Put on vance and hines throttle pak still has slow response
SOURCE: My 2008 1200 sportster is back firing and shooting
Well, yes it is somewhat normal, you have hot rodded it up. What happens is a bit of unused gas now gets buy the cylinder and explodes in the pipe instead of the cylinder. It happens due to scavenging, the new shorter pipes and the better filter allow more fuel to move quicker. If she has a carburetor it will need to be re-jetted but still may shoot flames. If fuel injected she will need dealer help.
SOURCE: i have a 2008 flhx
I've heard great things about the Terry components tuner but havnt used one yet. If u plan on doing any motor work or anything in the future I would use the hd super tuner. The power commander is also really nice and there are alot of maps available online for free. If u have a local dealer or shop u like using, see what they prefer to tune with on their dyno, that way if u have an issue with the bike they will be familiar with the component. Good luck!
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