MM9900PNP install on my NB, issue with neutral safety switch... - Miata Turbo Forum - Boost cars, acquire cats.

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Old 03-24-2014, 09:46 AM   #1
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Default MM9900PNP install on my NB, issue with neutral safety switch...

Ok so basically I bought a 99-00 MegasquirtPNP off a friend who had it on his 99 Miata. It was dyno tuned on that car and ran fine. Swapped it into my 2000 and started right up. calibrated sensors, set base timing, everything seemed good and it drives fine...

The one issue is that whenever the clutch is fully depressed while running the car will continue to idle but if I try and give it gas it struggles to rev until it dies. Release the clutch and it immediately recovers. The only thing i saw change in tunerstudio was the fuel loads. They basically freeze and wont increase when you press the accelerator like normal.

I know it isn't related to the cruise control/launch control switch because it only happens when you fully depress the clutch, not when pressing it halfway which engages launch control. Also enabling/disabling launch control doesn't effect the issue either way, and the launch control functions fine.


Anyway I borrowed a friends laptop so I need to buy one here this week before I can datalog/post any helpful information. I was just hoping someone might have an idea as to what the problem might be.

What else does the neutral safety switch effect besides disabling the starter?

Thanks in advance!
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Old 03-25-2014, 08:41 AM   #2
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Fixed the issue.

Basically I'm a derp and had extra vacuum line hanging down from the MAP sensor and it was getting caught under the clutch pedal when depressed! lol

I installed the megasquirt after a few beers so after looking at it sober yesterday I immediately saw the problem!
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