yeah man i had the exact problem but at a higher rpm then later on down the road my FI light had come on the it did it at a lower rpm such as you had described above. The FI light was then of for sure diognose was throttle response sensor which you cant individually replace that at least thats what the manual says but anyways comes out that you need a new throttle housing just to fix the sensor. So anyways i hope its much more simple than that. good luck man i hope my newb of advice has helped, please let me know.

 

I have the Yosh TRS slip on and there's no problem. Of course i also kept the air filter stock instead of going with a K&N just to avoid a potential problem. Could be a stock air filter might solve it? That'd be the easiest route...and cheapest.

 

happend to me also when i added an erion slip on and k&n filter

 

try two things!
1. get a can of ....sea foam fuel sabilizer!
2. allways run 93 octane gas!

my f4i stunt bike will and did bog when i ran cheap gas!
however sea foam and high end gas fixed the problem!

hope this helps good luck!

 

lol..

I mean, "lol!".

Sea foam is a fuel system CLEANER, not STABILIZER.

The bike is supposed to run 86+, meaning 87 IS PERFECTLY FINE. Do you have an engineering degree? If not, listen to the people who do, that specified 86+ and work at Honda. You might consider moving from station to station (pick stations that are more active, since the gas has less of a chance of being "bad"), but leave the octane alone.

 

Yeah try another gas staton 87 wont hurt anything its perfectly safe. I would go ahead and give it maintence as well plugs filter oil change ect. Another thing dont listen to your friends because they sound like they have no clue what they aretalking about. Someone on a gsx-r 600 talking like they know something. lol If they did know anything they would not be on that bike.

 

if you know the grand scheme of things in terms of mechanics of a vehicle from my knowledge i've always known that if it starts to bog at low rpms i would agree that due to the free flow from an exhaust it would cause that. the motor on your bike needs a specific amount of back pressure which alot of pipe out there dont hold up to the specs, which is where the pc3 comes in. the biggest problem with an added pipe is the difference fuel/air mixture and how it will be affected by the pipe. be sure to get a pc3 and have it correctly dyno'd to a specific map to make sure it's not running too lean/rich for the mixture. and also, unless you have an added sprocket (similar to advanced/retarded timing) you dont really need to have 91+ octane. if you read on wikipedia on what octane is and what it does to a motor, you'll see that it has more to deal with combustion and not the burning gas.

 

I have a 2001 F4i with a RS-3 slip on and a K & N filter and I do not have that problem at all, smooth as silk.