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

Fuses typically blow at 150% of the rated value. Check the manufactures spec's.

Mind post the GM/Delphi part number for the MAF?

80 Kpa on the low end may be a bit to tight - on a bad air day at Bonneville I have seen the baro as low as 83Kpa... 75Kpa might be a better low limit.

Peter Florance wrote:

ca434sbc4 wrote:

800vtwin wrote:What o2 sensor (controller) ?

None - inject 2.502V into the O2 input.

What's the value of Vref?

Good catch Peter Vref == 4.90V.

800vtwin wrote:What o2 sensor (controller) ?

None - inject 2.502V into the O2 input.

O2 input set for 0V==10.0:1 AFR, 5.00V==20.0:1 AFR

Enable wideband input.

Set 2.502V at C19 = AFR gage reads 15.2:1... Check both my fluke and amprobe meters against each other 2mv difference. Maybe a slight offset in the cal table or???

I'm working on a V-twin using dual spark outputs. See attached pdf for a timing diagram. I have the msq set for 36 -2 ok.

What should I enter for delay teeth? 4?

Should the offset angle for #2 be +80 or -80?

Running 2.89 code.

Thanks

Back at testing the sequencer again, currently running just the ignition - with fuel being provided via the existing MS2.

Noise issues found/resolved

- adding a 2K pullup on the red bootloader input to Vcc and removing the bootloader wire from the ampseal cleaned up the Vcc noise.
- the Vref ...

Bruce,

I'm considering adding a 0805 1K pullup on the red & green bootloader inputs and yanking the wire out of the connector. I'll use the jtag +5 as a source. It will remove 1 potential noise input source.

Too bad the uSquirt won't accept a MAP,&TPS signal via can bus from the MS2 box. I could ...

Al,

OK, I'll carry on testing Lance's code and getting the new engine ready to fire. Thanks for the feedback.

Marc