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Old 07-07-2013, 09:35 PM
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Originally Posted by ericlee9386 View Post
Is it possible for the dealer to just flash a 2500 program to the 1500 PCM's? That would eliminate MDS and give you the gear ratios of the 66 (68rfe) which should be plug and play but I cant ever find a straight answer.
The 66 still has the same ratios as the 45. The 68 sun and planetary gears are opposite to the 45. I have been trying for over a year to figure out a way to tune a 45 to handle 68 gears, but still no luck.
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