MSPNP2 Pulsing at idle - Miata Turbo Forum - Boost cars, acquire cats.

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Old 08-10-2015, 02:31 PM   #1
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Default MSPNP2 Pulsing at idle

My idle is right where we want at 14.7AFR but it seems to fluctuate/pulse into 15s and down to 14.3ish.

I also hear popping sounds from my exhaust and have felt puffs of air coming out of the tail pipe in sync with said noises.

I would appreciate being pointed in the direction of reading material that would explain this phenomenon and what needs to be addressed to fix it.

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Old 08-11-2015, 10:31 AM   #2
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Please post a data log of this and an MSQ - this will give us more to go on.
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