What did you do to your NNBS GMT900 Tahoe/Yukon Today?

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M3kanic

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I Got my blackbear tune a year ago and am loving it, haha. Howeber, I was under the impression that only engines with AFM needed catch cans.
It has to do more with what rocker covers you have, but it still doesn't hurt to have one and stop all of that oil from going into your engine.

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