Thread: Octane Change
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Old 02-18-2012, 01:47 PM
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wrobins1 wrobins1 is offline
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Join Date: Mar 2011
Boat: Mastercraft, X-Star, 2002, 5.7L TBI EFI GM/Indmar V-8
Location: Northeast
Posts: 179
Originally Posted by madcityskier View Post
I understand how octane works, higher octane, higher combustion point. Less perignition, greater volume in cylinder for explosion= more power. I'm not sure how changing it now could cause a problem. The original PCM service manual and MasterCraft owners manual call for minimum 93 octane, which is hard to come by. The reason for considering is the afore mentioned slight hesitation when getting into the throttle to pull my 285 lbs out of the water, particularly in April and November in Wisconsin. As I mentioned it seems that several mechanics believe this, though since they can't say why I believe it is likely to be an old wives tale.
as another >250 lbs rider/skier all I can say is when I notice that slight hesitation I remember back to learning to wakeboard behind a 17' Monte Carlo with a 4 cyl...
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