| Author | Message | ||
     Bigdog_tim |
Ok - a couple of weeks ago I bought the VDSTS from American Sport Bike. Unfortunately, a Vista version was not available and my only portable computing devices run Vista. Technoresearch promises they will have a Vista version soon - but I got tired of waiting. I borrowed an XP Pro based laptop and started in. I have an RS232 port on the machine - and I knew it was set for COM1. I didn't have a problem getting it connected (which seems to be one of the most common problems). I was following Al's step by step - and was in the process of closing the throttle body. I THINK this is where my problems began. I was turning the throttle screw (located behind the left fork above the air duct on an '04 XB12R) counter clockwise. I turned and turned. The VDSTS software was reflecting my turns and was slowly but surely. It got to the point it was measuring throttle position as 3.00 and throttle % as 3.00 as well. I continued to turn the throttle screw for what seemed like 20 or more full turns (I wasn't counting - just seemed like an awfull lot for no further changes. I suspected something went wrong (since the values didn't change - so shut everything down to focus on rereading the steps. As far as I could tell, I had not made any mistake. So - went back to repeat. This time, everything showed as 0's even thought the VDSTS said it was talking to my ECM. HELP! I am not sure what to do next! Thanks! | ||
| Bigdog_tim |
Ok - part two of this saga. After posting this, I read the part in the instructions where you should advance the throttle to about 1/3rd. I had not done that (because I hadn't done the TPS reset yet. I figured - what the heck - let me advance the throttle and see if that changes things. Well - it did. So - I got it to say 0 for throttle position after a few more turns of the throttle adjustment screw. I then did the reset function - then adjusted back to 5.1%. I have the VDSTS Standard - setting the idle was greyed out - so I was NOT able to do that. I started the bike - and it seemed to idle rougher than before. I decided to NOT put the front fairing back on because I am still hoping someone who has been through this will chime in. Of course, I NOW realize I did NOT have to pull the fairing off to do this - the connector is accessible with the faring still on! Grrrr.... the bible was very wrong on that one. Anyway - thanks for any help. Thanks, | ||
| Al_lighton |
20 turns counterclockwise? If I turned mine that many times, I'd have to remove the airbox to re-screw in the idle stop screw. Seems odd to have to turn it that many times to get to true zero. Did you gently force the throttle closed at the grip prior to pushing the TPS reset button? The holding the throttle at 1/3, setting, and then checking the TPS using the gauges is a step just to guarantee that the process is working. If you can set it with the throttle held at 1/3, and then look at it in the guages and see it pegged at zero until the throttle crosses the 1/3 point where you'd held it, then you know the process is working. But after that, you need to: 1) Gently force the throttle closed at the grip 2) Open the throttle at the grip. If it sticks, then snaps open, you've backed the idle stop screw far enough. 3)Gently force it closed again 4) push the TPS reset button in VDSTS 5) put it in gauges mode, turn the idle adjust screw until it reads in the mid 5's 6) start the bike and adjust the idle speed. Al | ||
| Bigdog_tim |
Al - you are the man! Thank you! I was really confused (obviously) and between your response and telephone support I got it totally sorted out. I rode about 80 miles or so pretty hard on my favorite country twisties. Although I wasn't really experiencing poor performance PRIOR to the TPS reset (other than way below average fuel economy) the difference was remarkable. For starters, getting to 4K RPM was effortless - the bike pulled hard and linear. It MAY be my imagination, but the throttle just seemed so much smoother. I rode about 20 miles of it staying below 3K RPM - just to see if the grunt factor was there for the turns - it was in spades. Again, not sure if a TPS reset is 100% the reason (or maybe I was just missing my Firebolt), but I am very pleased with the way it rides now. Sigh - so that means I am going to be budgeting a race ECM, new exhaust, and high flow air filter in the very near future.  | ||
| Buell2001b |
can you post a pic where the TPS reset button is located. I would like to know if i need to reset the TPS in future. It is notin the manual. I have a xb9r/03. thanks | ||
| Bigdog_tim |
There isn't a switch on the bike. You need the Scanalyzer or the VDSTS software (plus cable). I bought my VDSTS from American Sport Bike. You will need a computer running XP Pro (I don't think they have the Vista version yet). The place you "plug" in on the bike is the ECM. There is a "dongle" that is directly under the instrument cluster. The bible says you have to remove the front fairing - but you don't have to do that. |
