if your thinking ram air and exhaust

[07apexcan]

Well I put a ram air on my apex last year no problems sounded cool but this year I gutted my exhaust and noticed a lean pop at top rpm so if your thinking you would like to do these mods you will need a PC5 if you do both. Just letting ya know

 

[APEX 06]

Had this happen to me after adding K&N's

 

[yamahaapex07]

Air box

Yeah,

Any mod done to the air-box will need some type of fuel management to gain any type of power increase, let alone run quality.

Great heads up!!

Good luck!!