Need help setting up 2nd MAP sensor

74bluefish · Post by **74bluefish** » Tue Jul 14, 2015 4:57 pm

Need help setting up 2nd MAP sensor. I have MS3 and the expansion board.
I have the gauges on the dashboard showing Baro and engine MAP
When I put vacuum to the on board sensor both gauges move at the same time, I thought only the current Baro should move.
When I put vacuum to the ext 2nd MAP the gauge doesn't move.
I can't figure what I'm setting up wrong.
I have not started my motor yet, this is a new install. Here is a screen shot of my settings.

Post by **jsmcortina** » Tue Jul 14, 2015 5:35 pm

Please attach the actual tune file (MSQ) and a datalog. See "Forum help page" if you need guidance on doing that.

James

74bluefish · Post by **74bluefish** » Tue Jul 14, 2015 5:50 pm

Ok, I've attached the tune. But I don't have a datalog. I've never stated the motor.

Matt Cramer · Post by **Matt Cramer** » Wed Jul 15, 2015 5:10 am

You don't need to data log the motor running - data log your sensor testing.

74bluefish · Post by **74bluefish** » Wed Jul 15, 2015 2:05 pm

Ok, I'm posting a data log. Hope I did it right. I moved the throttle a few times just to make sure something showed up. between moving the throttle i put vacuum to the on board sensor and both gauges(ext map and current baro) show movement at the same time then vacuum to the external Map and the gauges don't move.

Post by **jsmcortina** » Wed Jul 15, 2015 3:01 pm

You are using an old firmware version.

I loaded your tune into the current firmware and it highlighted the problem.

You've configured your baro sensor and primary MAP sensor to both use the on-board MAP sensor - that won't work.

You have then configured a second MAP sensor to use the external MAP sensor, that's not what you want.

Leave Baro set to "Mainboard"
Set MAP sensor voltage input port to "EXT_MAP (ADC11)"
Set 2nd MAP port to "Off"

Also consider upgrading to the current firmware - available from the Downloads page.

James

74bluefish · Post by **74bluefish** » Thu Jul 16, 2015 1:55 pm

Thanks, James and Matt

Updated the firmware and put the settings. That fixed it.
At first there was still conflict with MAF but I fixed that myself

I will post another file next week and of it looks good I will try to start the engine for the first time.

Thanks once again.
I am learning slowly, but learning.

Dan

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Need help setting up 2nd MAP sensor

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