Would a manual transmission benefit from a Procal or Flashcards in terms of gear shifting by giving proper fuel by acceleration. After I went to 34", I notice the jeep going to what I consider limp mode with the manual transmission sometimes when climbing a hill.
What Sharkey said. I didn't notice any change when I reprogrammed my manual but then I never drove it with the 37s on the factory program, and I can only assume that the speedo was corrected since my gps agrees and was confirmed with a radar gun as well.