Im not sure how you adjust the TPS on your bike, I thought it was a static test with the engine not running.
If you need a tachometer for the adjustment, I think you can borrow one from Advance Auto, and maybe some other car part chain stores.
tachs are one of the things that are being replaced by the OBD2 scanners...
If you are a technology geek, you can put a microphone on an oscilloscope and measure the time between the exhaust pulses, and calculate the RPMs from that.
I experimented with a spectrum analyzer ap on my smart phone, it sorta works, but the microphone on a smartphone is not good down around 20Hz or lower.
Last edited by KCW; 03-31-2019 at 08:18 AM.