My friend told me to come to this forum and find a related post for my problem. Can't find one. Here it is, The only mods on my bike is a full system graves exhaust. When I'm riding my bike and it begins to heat up the bike will shut off if i'm at a stop position. And when I try to start it up again it would give me a hard time and I would have to give some throttle just to start it and once it is started I have to hold the throttle just to keep it from dying. Now, when I am riding on the freeway bike will not have power below 3000 rpm, It would start bogging out and when passes 3000 it is normal. I changed my spark plugs already and it is still happening. A local shop here told me that I need a power commander, and that is the reason why this is happening. And also they wanna charge me for dyno. All my friends told me to start with the cheapest problem first before I start spending all this cash at this shop. Keep in mind that I had this bike since 04 with the full system exhaust and no p/c. And only now this problem is happening.

the problem will most likely been caused by running the incorrect mixture over time. If the air and fuel is not mixed correctly you risk running too rich or too lean
Too lean meand running very hot and possibly causing engine failure through pistons snapping under too high temperature. Can usually tell this my down pipes turning blue due to excessive heat.
if running too richit will cause build yp of carbon etc and poor running. th reason its runnnig poor is because it requires more pressure to get throught the clogged up valves and pistons.
You will need some serious engine cleanerput in your fule and you do need a map and a dyno.
Depends how much damage you've done if you'll be able to clean it without stripping the cover off.
I would suggest getting your valve clearances done and at the same time they can check for damage and dirt and clean them up. then fit a power commander, then get a suitable map. I have one for a graves full sytem and a stock filter attached. but i would reccomend if you can afford it getting one done from a reccomended dyno centre.

good luck matey

thanks....i'll go talk to the guys at the shop and see if they can fix this problem. I guess it's the only way.

it could also be your IAT sensor in the airbox, I know if that gets wrong readings it will make the bike do weird stuff, such as fuel ping, die out at idle, and have spuratic throttle.

it could also be your IAT sensor in the airbox, I know if that gets wrong readings it will make the bike do weird stuff, such as fuel ping, die out at idle, and have spuratic throttle.

yep, definitely sounds like a sensor problem.. u can also use the engine light diagnose to determine which sensor.

and don't bother going to that shop for further engine troubles.. it sounds like they have no clue..

and don't bother going to that shop for further engine troubles.. it sounds like they have no clue..

I really appreciate all the feedback on this problem. That shop is the only one on this island that has a working dyno. I really do not want to spend so much money with that shop and have the same problem, ya know. It seems to me that they want to make money of me. But on the other hand what if they are right. Some of my friend have told me to go there and have them do it cuz they have the dyno. But my other friends are saying what u are saying...it could be something else. Basically the shop is telling me to get a power commander and have it mapped for my exhaust. And my friends are saying to go the cheaper way and do process of elimination. That makes more sense to me. I will take you advice on the sensor and see if that will solve the problem. I will keep you posted,,
thanks again

It seems like your bike is running too lean because of the full system and the fact you installed it without a powercomander. You cannot do that. When a bike runs lean it heats up more and this could cause the sort of problems you are talking about. You definitely need a Powercommander.

You can use a map that suits your setup from the ones you will get for free with the Powercommander. You can also contact graves for one.

If you really whant to go 100% then get a specific map for your bike by going to a Dyno center.

Whatever you do stop riding your bike without a Powercommander as it might result in serious problems due to overheating in general and overheating inside the engine specifically.

Good luck

isnt that what i said??????

isnt that what i said??????

I don't know. You talked about runing rich or runing lean and valve issues. When the main issue is that he is running a full one without a powercommander. :secret:

which causes a bike to run lean creating too much heat resulting in broken bike or rich which results in poor performance....
Either case a power commander and map is the answer.

maybe its my english way of saying things

Yeah..I'm pickin up a power commander this week and my friend is going to install it for me with a map that he had on his computer. I mentioned earlier that this shop is the only one on the island that has a working dyno, and I dont want to spend all that money when the problem is still there...ya know. Thanks for all the advice. Right now the plan is to install the power commander and check out the IAT sensor. From there if the problem is still there, then ill just fly my bike into the ocean...j/k.
Oh yeah...im not riding my bike at all with this problem.

Ok, so we finally hooked up the pwr cmdr today. this is what happend. By using the maps that came with it we tried to find the closest one. Graves full system (whick i have), Graves velocity stacks (dont have), stock or aftermarket air filter (which i have). then we upload it to the pwr cmdr. Right away the throttle reponse was different, in a good way. And also the idle sounded smooth. Then, while idling, the bike started to heat up normally then it happend again.....it died. Problem still there. No engine light came on. It was my mistake to forget to do the diagnostic light thing, but here is my question. If we put the bike in diagnostic mode without an engine light ever coming on before that, will i still get an error. What i'm trying to say is, if it is the IAT sensor that is bad, how come the engine light does not come on? Well anyways, the next step is to find the bad sensor and replace it. I'll keep you updated again. thanks guys for the help.