ok so i want to know the dead honest truth if i should get a custom tune or just leave what i got going on right now.....i have a k8 600 with slip on yosh and custom cat hack job with power commander and k&n with a full system map from dyno jet and i want to know if it is really necassary to get a custom tune or just leave it the way it is??? my bike runs great but was wondering if it would make a huge difference...?? also....is there any pics of how to block of the PAIR valve withouth taking off the air box cause i was wanting to block it off using the marble method??

ok so i want to know the dead honest truth if i should get a custom tune or just leave what i got going on right now.....i have a k8 600 with slip on yosh and custom cat hack job with power commander and k&n with a full system map from dyno jet and i want to know if it is really necassary to get a custom tune or just leave it the way it is??? my bike runs great but was wondering if it would make a huge difference...??

If you want good enough and safe, then keep it as is....if you want perfect (e.g, very smooth power curve and a bit more power), than get the custom tune....you have to decide is the extra coin worth it....also you will know what your A/F curve is doing if that matters to you.

You can always gain from a good custom tune.

with a full r55 and pc3 i made 101 hp tune made 109hp with nice a/f