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

Just closing the loop here -- AFR reads just fine while the engine is running.

I removed C30 from my microsquirt and was able to rev straight to the redline. Not sure if the diode swap or the cap removal did the trick, but either way, I'm leaving it be!!

I don't think this should be an issue with V3 microsquirts.

Rich

I swapped the diode for a 1N4148 and the same thing is happening. See attached png...datalog is 4mb, i'll make one under 1mb so i can upload it.

Any help is appreciated

thanks
rich

Thanks matt, I will do tonight.

I have a V2 microsquirt ordered on May of 2008, so I suspect I'm having the diode problem described in this thread:

http://microsquirt.com/viewtopic.php?f=89&t=23063&p=147261

The gap between my VR sensor and trigger wheel is extremely small -- .01" or so.

Did increasing or decreasing the air gap solve the problem?

Hi Matt, Grippo, 24c and others,
My engine won't rev above 4k rpm -- it bounces off 4k as if a software rev limiter was kicking in (it is disabled). The car runs well otherwise and all the sensors are reading as expected including AFR...in fact I ran autotune based on the target AFR table in the ...

Hey Matt / Grippo / others,
I'm not seeing any AFR readings in tunerstudio v 1.006. I have a version 2.0 Microsquirt running code version 3.77. WB O2 sensor is an AEM UEGO, part number 30-5130. I have custom WB selected, set at 0.5 Vdc at 8.5:1 AFR and 4.5Vdc at 18.0:1 AFR per the manual: http://www ...

I only have 1 pickup -- a VR sensor. It's a single crank wheel input.

I verified with a timing light that 291 gives me what it should on bank 1 (commanded advance = measured advance).

Hi,
I have read http://www.microsquirt.info/dualspark.htm but am still confused about what value I should set for "offset (advance) for #2 (degrees)", found under Ignition --> dual/multispark options in tunerstudio.

I have a 4 cylinder 4 stroke engine, even fire, wasted spark, single crank wheel ...