ignition banks uneven spark - Miata Turbo Forum - Boost cars, acquire cats.

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Old 03-29-2016, 02:39 PM   #1
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Default ignition banks uneven spark

Writing on behalf of my friend who has an -99 1.6 with jackson racing supercharger and DIYPNP by Brain

Every now and then the car goes into a mode where 1&3 and 2&4 ignition banks fire unevenly, 1&3 seems to fire at normal speed and 2&4 at accelerated speed. AFR of course goes extremely lean and the car is almost undrivable.

Video of 1&3 banks;

Video of 2&4 banks;

Perhaps the white processor board of DIYPNP is fucked up..?
Any ideas?
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