hey guy i got a cbr f4i cali bike i live in newyork idk how this works but yea when i boutgh it the kid put a gsxr two brothers pipe in it and there for could not put the o2 sensor back in so it is just zip tied up out the way i am only gettin about 120 miles to a full tank is there somthin seriously wrong with her or am i just buggin and she is an 2001 17xxx miles what could i do to make her run strong again thank you to all for the help....

 

Riding with stop lights drops mileage from 45 to 33 for me. reserve comes on at 120 instead of 145 on highway. Ride it on the highway tank to tank and see what you get!

 

Seems like you are roughly where it should be.. Depends on how you drive it.. How it is maintenanced and things like that. I am -1 in the front and ride mine pretty hard and thats about what i get when the light kicks on...

 

reason is because your o2 detector is detecting a !@#$% ton of air and no fuel if its just zip tied off to the side and your computer is compensating by dumping in alot of fuel... you can easily fix this problem.... all you need to do is go buy one of these

http://cgi.ebay.com/ebaymotors/Stain...Q5fAccessories

a stainless steel o2 bung... take your exhaust off... take it to a local shop have them drill a hole for the o2 bung in your MID PIPE then have them weld the bung in.... when they are done just put the exhaust back on your bike and screw in the o2 sensor... good to go....

 

naww man that sound about good. i am -1/+2 and i am getting about 110 till my reserve kicks on. but i do rag on her quit a bit

 

Power commander maybe?

 

There's definitely something wrong with my bike. It's stock and it only went 70 miles recently on the street before the reserve light came on. I've already changed the spark plugs a year ago. Maybe I installed them wrong?

Since I've recently dedicated my bike to track only I don't mind too much. I just fill up before every session.

Eventually I need to investiage though.