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#182: 06-09-2013, 02:28 PM
Title: Duke
Rank: Premium Donator
Location: Tioga county ,NY
Car: 07 Pontiac Solstice GXP-14 BMW 535d xi
Posts: 2,492
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I do log them to see what they are doing. IMO change or clean when they are not running right. But if it's not broke don't mess with it. Around 220k when I did my last TB Service. There was 5* difference between right & left intake cams at start up. The two cams even up when motor got up to opt. temp. So before starting TBS, I ran Gunk motor flush thru it for 10min. After TBS & other maintenance. Both cams was back in sync at start up.
Mileage:331487 Retired/Sold