takehikes wrote:
got mine from a member, do not remember price but it was very good. 
I did not do TPS, did VOES and seems to work just fine.
Do the TPS and you'll see you wasted the time with the VOES. I felt no discernible difference from no mod to VOES, but from VOES to TPS, big enough difference to feel, hear and see (seeing was the better mpg's in city riding)
It wasn't until I did the TPS that I realized the difference, and that was when I was first setting up the idle resistance on the TPS. I originally had it set for 700 ohms, so installed, and my idle went to hell in a handbasket (slowed), hmmm, why? come to find that when I tightened the screws down on the TPS, it shifted, it lowed to a low 500ohm and something. Ok, off again a re-set, got it to about 720, all good even after setting the screws, re-install, idle back to a bit faster though than with VOES, so had to lean it a hair. When the TPS is set for idle it proved an approx .8v, .9v signal to the ignition module, the VOES provides a 0v signal. I don't know if that would provide a default in the module or not, I do know when the VOES opens, it provides a 5v signal to module which causes the
WOT default timing. The only way to know if zero volt provides a timing change (to closed throttle timing) to the timing curve would be with a digital o-scope. I don't know how that particular IC is set-up, but a zero voltage is the same as no voltage, so if no voltage, then the VOES serves absolutely no purpose other than a lot of us spent the time and the money for naught, even myself. And then, is it all in our minds that there was a chnage? Unless someone at
Dyna would know and disclose that info. On another note, the TPS, on either side of the center tap has a minimum of 500 ohms, at least mine does, it never reached zero ohms fully turned, so there is always some sort of voltage signal, it never goes to zero volts. But yet, if the TPS opens, I believe an internal signal would also provide the 5v to keep the timing in WOT, and this would still allow the bike to run. I also ran the VOES in the position to effect the use of the retard switches, never got more than 10 ft, before I would try the next level of retard, so that was a complete failure of testing, oh well, I had to try everything possible.
So yes, you can compensate the idle by making it slightly richer with a VOES or with no mod, but the TPS allowed it to be leaner. The TPS also provides about 15 interloping curves while in the CT curve until it changes to wot curve, then it stays there. I have yet to hook up a volt meter to see at what position throttle is in or at what speed it goes into wot, it's all depends on the voltage signal to the ignition module. I don't have probes thin enough to get past the rubber seal on the connector to get a voltage read, and I was not going to buy probes just for a one time use reading. It was more of a curiosity thing, but, as I said before, since I had the
carb configured in every way possible, the big difference was the TPS mod. If I had to do it again, I would just go do the TPS mod.
I know, long winded, what can I say. LOL
Take what ya can, toss the rest.
Favoured: 0
Thanks buddy!
