will I have a 2003 KFX 400 I have a full big gun pipe but I need to get the jets and airliner before I put on

but I toke the stock baffle out of the stock pipe I seems to have more power and I like the sound

is it hurting my motor and should I put it back in

what are other tips and trick to get more power
or cheap MODS

 

Well it won't hurt the engine as long as you have not changed the intake at all. In other words if the air-box lid is still on, and the same amount of air is going into the engine it won't change your mixture.

But the "power" you are feeling is probably not much compared to what a real pipe designed for power will give you.