i try to make my subjects describe as best as i can what i'm looking to learn so you don't have to open it if u don't want to... so if you're here, i hope u can answer my question.

if i put a K&N air filter on my 02 CBR F4i, do i NEED a power commander to supply more fuel?

 

No.

 

ahh 1 response that suits my mentality. ty for the reply. the fella at the bike store said i should get one. but i'd rather not if i don't want to. after all i got the bike to ride daily for when i'm working/building on my car.

thx again, anyone else have input as well?

 

Ditto on the "no".

 

well K&N has a high flow rate so it'll mess up the fuel mixture without some kind of mapping. It can be done manually, but controlled at more points with a power commander. FYI you will lose power with just sticking a K&N filter on your bike with no emission mapping. Same as if you throw a pipe on that removes your O2 sensor. There are some slip-ons that recommend you stay with the stock air filter also so make sure you look into it before you invest... AKA Erion slip-ons.

 

how can it be done manually?

 

with expensive computer diagnotic equipment.. still not as good... as a custom map on a power commander

 

to be honest with you I don't know anyone who's got work done without a powercommander. but count on at least an hour's labor for the settings from a performance shop... dealers just go duH?

 

to let you know also.. powercommander isn't your only option.. if you want to spend the big bucks you can look into yosh for an EMS module that allows for 3 presets for quick change to track or high altitudes. you can also add on to this module with rapid shifters that cut the throttle for clutchless shifting. more features available but I forget.

 

I put a K&N on my 04 F4i and a D&D slipon...the only prob I have is it bogs down when I first take off if I just open it wide open.It also surges a little while at idle.I didn't notice any other power loss though.I would like a power commander...not in the budget right now.[8D]