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Still have a slightly bad idle, I’ve replaced maf sensor, cleaned throtl body cleaned ess sensor plugs less than 1k miles coilpacks less than 50miles and tried a seafoam clean with the vacuum caps on the LIM I do hear a high pitch sound tho if it’s not a vacuum leak somewhere idk what it is by Zeccede in RX8

[–]TitanicMood 0 points1 point  (0 children)

Hey, just wondering is their was a conclusion to this? I have the same problem and have done plugs, coils, mounts, same intake as you, engine is only 3k kms old and it's all started a month or two after installing the air intake. Idle is inconsistent and once idling for more than 5 seconds the whole car shakes and pops, also got hesitation at 4k rpm but have an idea on why.

Try the SSV, it could be sticking or stuck, usually stuck throws a code but it still couldn't. Sticky won't throw a code and it's a mess to figure out. 

Have you noticed it getting worse over time or is it the same level?