Last weekend I performed the TPS adjustment as recommended by many VTR owners. In so doing, I moved the setting down from 837 (stock) to 477. Despite taking a few rides during the week, I could find no positive effect except for a very slightly smoother engine (again, barely detectible). On the other hand, I did find that my throttle response and power seemed to suffer noticeably. Snapping the throttle with the bike in neutral, it seemed slower to respond. Low-end and mid-range power (short-shifting away from traffic lights and performing roll-ons at freeway speeds) it also seemed that the bike was not as snappy. So, today, I reset the TPS back to 821 ohms. I have just returned from a quick ride and my snappy Storm is back.

As I undertook this mod, I was hoping to get an improvement in performance/throttle performance (one guy reported it felt like he had gained 10 hp). IN my case, it felt as though I had LOST 10 hp. Looks like the TPS will be staying at the higher setting from now on.


I just thought I would share this with the rest of you.

cheers

 

i too have had a failure with this tps mod my friend. my hawk was also "out of range." after i set it to spec i had a very noticeable flat spot. i returned it to where it was before and the flat spot went away.

 

man, that's weird. I've never heard of negative results from calibrating the TPS.

 

What I expected.

 

Sorry to beat the horse but I too set mine back to over 800ohms and am much happier.