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Old 09-14-2013, 09:52 PM
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snrusnak snrusnak is offline
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Join Date: Jan 2011
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Vehicle: 2010 Dodge Ram 1500
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Engine: 2008-20?? 287ci (4.7L) PowerTech V8 310hp 330lb/ft
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The pcm retarding timing will result in power loss. What tune are you running with the 89 octane? 89 tune? 87 tune? If it's an 89 or 87 tune and you're using 89 octane you shouldn't have any issues. Try some 91 or 93 just to see if you notice a difference and if it stops from pulling timing.

4 deg may not be a big deal especially if not at wide open throttle and high rpm. I've seen as much as 9 deg pulled on the superchips 93 tune with 93 octane. Depends on a lot of things. Temperature can have an impact. The biggest factor is weight of the vehicle(load on the engine). The more load, the more chance of detonation. That's why you can't tow/haul with the performance tunes unless you use higher octane.
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