F4i Stunting!!! Help Me!!!! Clean air? Idle mod? BD dying?
Squid Standers. Get Owned
Joined: Feb 2008
Posts: 1,406
From: Scottsdale, AZ
Re: F4i Stunting!!! Help Me!!!! Clean air? Idle mod? BD dying?
I got an 01 f4i also, and i just did the clean air mod and idle mod a week ago. It was pretty easy to do, use a 1/2 inch t-fitting and save the stock clamps, they work alright. I just bought another 01 f4i cable, and it is the perfect length, comes out to the left of the air box and sits right on the stock frame, real easy to adjust. Turned the stock idle cable down to about 11-12 grand and use the second to adjust the idle. The tip-off sensor is going to be right on the top of your stock lights, and i just cut the wires one by one, i believe it went [tip box]---wire----female into male-----wire---on... so i cut before the female and took the red and green wires and wire nutted em, then wire nutted the white wire.
damn that's a high idle! 
and you cut the female and nutted
Thread Starter
Registered User
Joined: Jul 2007
Posts: 115
From: West Bend, WI
Thread Starter
Registered User
Joined: Jul 2007
Posts: 115
From: West Bend, WI
Re: F4i Stunting!!! Help Me!!!! Clean air? Idle mod? BD dying?
I got an 01 f4i also, and i just did the clean air mod and idle mod a week ago. It was pretty easy to do, use a 1/2 inch t-fitting and save the stock clamps, they work alright. I just bought another 01 f4i cable, and it is the perfect length, comes out to the left of the air box and sits right on the stock frame, real easy to adjust. Turned the stock idle cable down to about 11-12 grand and use the second to adjust the idle. The tip-off sensor is going to be right on the top of your stock lights, and i just cut the wires one by one, i believe it went [tip box]---wire----female into male-----wire---on... so i cut before the female and took the red and green wires and wire nutted em, then wire nutted the white wire.
Squid Standers. Get Owned
Joined: Feb 2008
Posts: 1,406
From: Scottsdale, AZ
Re: F4i Stunting!!! Help Me!!!! Clean air? Idle mod? BD dying?
yes the with the idle mod you are actually adjusting the throttle where as with the stock idle adjusted you're actually adjusting the "choke" its not really a choke on fi bikes but it imitates it or something.....i dunno how to explain it technically
......anybody feel free to explain it correctly
......anybody feel free to explain it correctly
Thread Starter
Registered User
Joined: Jul 2007
Posts: 115
From: West Bend, WI
Re: F4i Stunting!!! Help Me!!!! Clean air? Idle mod? BD dying?
yes the with the idle mod you are actually adjusting the throttle where as with the stock idle adjusted you're actually adjusting the "choke" its not really a choke on fi bikes but it imitates it or something.....i dunno how to explain it technically
......anybody feel free to explain it correctly
......anybody feel free to explain it correctly
No No I get it.... I set my idle with the stock one, and set my rpm with the new one.
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Joined: Jun 2005
Posts: 7,259
From: N/A
Re: F4i Stunting!!! Help Me!!!! Clean air? Idle mod? BD dying?
Clean air mod, idle mod, tip sensor. 3 BASIC mods that need to be done. If you are still experiencing bog... new plugs. And after that, you can always experiment with gearing, air filters (aftermarket such as K&N) and slip-ons.
Thread Starter
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Joined: Jul 2007
Posts: 115
From: West Bend, WI
Re: F4i Stunting!!! Help Me!!!! Clean air? Idle mod? BD dying?
I just did my plugs and put a K&N in the bike over winter. And I also read that the clean air box mod can help keep the engine from hydro locking. "a cylinder filling up with oil".
"Keep Your F4i's IDIOTS"
Joined: Apr 2007
Posts: 3,914
From: deep dirty south Illinois you fucks not missouri
Re: F4i Stunting!!! Help Me!!!! Clean air? Idle mod? BD dying?
+1 me to
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Joined: Feb 2008
Posts: 163
From: Mount Dora, Florida, US
Squid Standers. Get Owned
Joined: Feb 2008
Posts: 1,406
From: Scottsdale, AZ
Registered User
Joined: Feb 2008
Posts: 163
From: Mount Dora, Florida, US
Re: F4i Stunting!!! Help Me!!!! Clean air? Idle mod? BD dying?
i haven't noticed that much of a difference, but in the main post about the air box mod, there are several posts regarding the issue, and most say it only has positive benefits.
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Joined: Jun 2005
Posts: 7,259
From: N/A
Re: F4i Stunting!!! Help Me!!!! Clean air? Idle mod? BD dying?
You are right, but it will help minimize it. If he really wants to go the extra mile to make the bog almost obsolete he needs to do a valve adjustment and then sync the throttle bodies.
Free: People will say both ways; Run AM exhaust and AM air filter or run stock exhaust and stock air filter.
After doing the 2 motor mods and getting rid of the tip sensor, start playing with gearing combos, exhaust and intake combos. I still haven't found the perfect combo on my bike.
Free: People will say both ways; Run AM exhaust and AM air filter or run stock exhaust and stock air filter.
After doing the 2 motor mods and getting rid of the tip sensor, start playing with gearing combos, exhaust and intake combos. I still haven't found the perfect combo on my bike.
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Joined: Jun 2005
Posts: 7,259
From: N/A
Re: F4i Stunting!!! Help Me!!!! Clean air? Idle mod? BD dying?
The air mod redirects any oil that may feed into the top half of the motor (say you tumble your bike and it lands upside down) into the exhaust ports and out of the exhaust. I also find that it gives it more low end and feels a bit smoother due to decreased crank case pressure.
"Keep Your F4i's IDIOTS"
Joined: Apr 2007
Posts: 3,914
From: deep dirty south Illinois you fucks not missouri
Re: F4i Stunting!!! Help Me!!!! Clean air? Idle mod? BD dying?
The air mod redirects any oil that may feed into the top half of the motor (say you tumble your bike and it lands upside down) into the exhaust ports and out of the exhaust. I also find that it gives it more low end and feels a bit smoother due to decreased crank case pressure.
Registered User
Joined: Oct 2006
Posts: 55
From: Southfield,MI
Re: F4i Stunting!!! Help Me!!!! Clean air? Idle mod? BD dying?
if i understand the clean air mod correctly its only purpose would be to keep oil out of the airbox. there wouldnt be any performance difference. cuz all you are doing is rerouting the hot air from the crankcase. Instead of going back through the airbox its going straight out the exhaust
Registered User
Joined: Feb 2008
Posts: 163
From: Mount Dora, Florida, US
