MicroSquirt.com read only forum (Jan.15,2018)

I am running a 2002 yamaha r1 with the microsquirt, bosch ignitor, stock independent throttle bodies & injectors mounted straight to an ITG air filter (no plenum). When I floor the throttle it occasionally picks up pretty well, but most times it coughs and chokes back down to cruising rpm. I took ...

:yeah!:

Ran 100k pot inline VR1+

10k = didn't work at all
20k = showed a little promise
33k = significant starter noise reduction and rock steady cranking sync


https://lh5.googleusercontent.com/_LnTsXvGl9MY/TWYEsS0tFlI/AAAAAAAAAoA/XV7z4aX_mjI/s800/noise_reduction.jpg

https://lh4 ...

I haven't read a post here or MS2 forums that have solved my VR input noise issue.

My Set Up
2002 Yamaha R1
microsquirt v2 board
Bosch 211 igniter for COP
16-1 crank wheel VR input
1 tooth cam hall sensor input
Optima red top batt
11ft of 6 ga starter wire

A picture of my 16-1 crank wheel ...

Ok, back to the basics then...

Removed all the sparkplugs and I'm still not getting a rock steady rpm sync during cranking. There still appears to be slight noise during the missing tooth, below is a scope trace. I wrapped the starter wire and the VR output wires with aluminum foil but that did ...

It's been 13 months since I've posted on this thread. I have just completed the build of a 2 seater offroad vehicle for this engine to go in, and I'm working on getting it to fire up again. I'm getting significant noise on my crank sensor's VR sensor output.

First thing's first, here is a picture ...

Thanks again 24c. It's much better now but needs some tweaking on the warmup enrich slope to get consistent starts from cold to hot..

Thanks! I realized that I didn't set the required flow correctly. Good info on your enrichment numbers! I must have another look once I find a new starter relay

Thanks for the help guys. I really appreciate it!

1) I tried re-downloading 2.890 software and starting the msq from scratch. That didn't help my WUE issue.

2) I tried grounding the cam sync to chassis ground. Still no difference.

I haven't tried the pull-up resistor. Should I try adding a 10kOhm ...

Obviously 2 teeth did not register well. I returned to my 16-1 wheel but with falling cam sync.

I found out that I've been struggling most of this time with bad wires off the VR sensor, when the trigger cover is torqued on us loses VR sync sporadically leave it loose and cranking stays steady. The ...

Man, getting this engine just to start has been killing me these last few months. I went from a 8-1 crank wheel "M-N Crank Wheel w/ No Cam Synch" to a 8-2 which seemed better at finding the missing tooth at the time. Put the harness on the JimStim and it runs fine with a 12-1 trigger except at ...