Mr Brown
Registered
Here's the details:
00 Busa, stock motor, PC3, couple of other bolt ons. Spun a rod bearing last year, put the motor back in and it hasn't been right since. I can open the throttle 95% and it pulls hard. Soon as I pin the throttle (any gear, makes no difference) it starts backfiring and missing. Doesn't throw a code. Noticeable drop in power but it doesn't just fall over.
I jumped the port to check the TPS, it showed that it was off (blip was high) adjusted and set it, ran the bike, same symptoms, and the tps had moved again. Bad tps I figured. Replaced the tps (courtesy of Daniel @ Cloud 9) installed and set it, rode it up and down the road a bit, it seemed ok. Went to the track friday, after the burnout the bike dies. Restart it and it won't hold a steady idle, hunting back and forth across a 500 rpm range. Turn the idle up til it evens out and it's over 2k. Make my pass, and as soon as I get the bike wide open, it starts the same backfiring missing thing again. Jump the code port and the tps blip is moving from center to top position and back without me touching the bike! When it does stay still it moves from center to top whenever the throttle is opened stays @ the top for a beat after the throttle is closed then drops back to center. Unplugged the pc, makes no difference it still does the same thing.
Talked to all my friends at the track, one of whom is a master Suzuki tech, nobody has a friggin clue as to how to solve this. Spent a couple hours (!) with Daniel on the phone friday nite trying to figure it out, no clue. Best thing we can all figure is there is a short somewhere, or the ecu has gone bad.
If anybody has experienced this problem and has a solution, please let me know.
00 Busa, stock motor, PC3, couple of other bolt ons. Spun a rod bearing last year, put the motor back in and it hasn't been right since. I can open the throttle 95% and it pulls hard. Soon as I pin the throttle (any gear, makes no difference) it starts backfiring and missing. Doesn't throw a code. Noticeable drop in power but it doesn't just fall over.
I jumped the port to check the TPS, it showed that it was off (blip was high) adjusted and set it, ran the bike, same symptoms, and the tps had moved again. Bad tps I figured. Replaced the tps (courtesy of Daniel @ Cloud 9) installed and set it, rode it up and down the road a bit, it seemed ok. Went to the track friday, after the burnout the bike dies. Restart it and it won't hold a steady idle, hunting back and forth across a 500 rpm range. Turn the idle up til it evens out and it's over 2k. Make my pass, and as soon as I get the bike wide open, it starts the same backfiring missing thing again. Jump the code port and the tps blip is moving from center to top position and back without me touching the bike! When it does stay still it moves from center to top whenever the throttle is opened stays @ the top for a beat after the throttle is closed then drops back to center. Unplugged the pc, makes no difference it still does the same thing.
Talked to all my friends at the track, one of whom is a master Suzuki tech, nobody has a friggin clue as to how to solve this. Spent a couple hours (!) with Daniel on the phone friday nite trying to figure it out, no clue. Best thing we can all figure is there is a short somewhere, or the ecu has gone bad.
If anybody has experienced this problem and has a solution, please let me know.
good luck 
