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Posted by chief
- April 14, 2010, 13:39:44 PMA couple of things. Get rid of the hypercharger. Any other air box will do to determine if this has anything to do with the problem.
Have you ever had the ECU fully tested? The ECU determines the optimum fuel injection and ignition timing based upon input from 6 sensors and the ignition pickup coil. (TPS (throttle position sensor); ECT (engine coolant temperature); IAT (intake air temp); CAP (atmospheric pressure); vacuum sensor; and vehicle down sensor - and engine speed via the pickup coils)
The fuel system itself is made up of the fuel pump, fuel pressure regulator, fuel injectors and throttle body (plus FI system fuse).
The ECU has a self test - not automatic, you have to jumper it to make it spit out the fault codes. It covers all the sensors and the fuel pump. All of these faults, excepting two, will still allow the bike to run... just very poorly.
I'd test the ECU or have it tested to determine any fault codes present.
From what you say, I don't think there is a problem with final drive, brakes or clutch.
Here is a list of things that could contribute - some are obviously not the whole problem, but there could be a combo effect.
1) clogged air filter (not likely with the hypercharger)
2) Restricted fuel flow (sounds like too much fuel)
3) Clogged/damaged muffler (doesn't sound like a problem)
4) worn or fouled plugs
5) Faulty fuel pump
6) Obstructed throttle body or defective fuel injector
7) Faulty coolant sensor
Faulty throttle position sensor
9) Faulty inlet air temp sensor
10) Faulty atmospheric temp sensor
11) Faulty vacuum sensor
12) Faulty ignition coils
13) Incorrect ignition timing (ECU or ignition pickup coil)
14) Low engine compression
15) Worn or damaged valve train assembly
16) Engine overheating
If engine surges:
1) fuel pressure
2) faulty fuel injectors
3) faulty coolant sensor.
At this point, you really need to test that ECU... IMHO
Posted by annieoakley
- April 14, 2010, 12:53:18 PM 
That is not fair! What the heck is going on with your ride?? 
I wish I was closer, I would share my bike with you while yours is in the shop! Keep the faith! (My fingers are crossed that it is something simple that costs $0 to fix. I think you have spent enough already 
)
Posted by 1SG CAV
- April 14, 2010, 12:19:18 PMWell I heard from the dyno shop, not good news. This guy is a bike guru and my bike has him stumped. he can't get it to run right. he says it keeps changing the fuel flow on him. (This guy does know what he's doing). I explained that the map for the items mounted on my bike won't even let my bike run. I told him that I've hooked the power commander up to my laptop, mad more adjustments just to get it to idle and run down the road. People behind me think they are leaking fuel just from my bike flumes. I would love to put the factory air system back on. but like Ramakins said you have to remove one of the heads to get the cross piece in. I guess my son-in-law got the better deal in the trade (Tractor for the bike) His cost bsince trade $0.00; mine $1300 for new throttle body, $300.00 and climbing for the dyno. my last ride (taking it to the dyno shop) was 44 miles and I used 3.5 gallons of gas.
Anneoakley I am so happy you got your bad boy going, it makes me jealous too. ride hard and long and enjoy the ride .