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Old 10-20-2012, 11:53 PM   #234 (permalink)
kevr6
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Quote:
Originally Posted by .c2 View Post
T1R catback w/ invidia test pipes. Cold start (rattles at 1.5k during cold start idle..), in car noise cruising under 2.5k rpm.
Is it normal for the revs to be spiking 200rp up and down while idling when cold?

http://www.youtube.com/watch?v=WNJVU-pIvpk
It's normal! Secondary air system!
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