jmcalli

Have you compared the gas mileage with the original axle ratio?

dnhill

No, but I can guess. Better under 50MPH, slightly less above 70. I haven't noticed a difference but that is not very scientific. The normal lockup converter shudder is completely gone that alone was worth it. I wouldn't go any bigger than a 3.69 gear either. I think it's perfect for the 7AT

mtrsprt

What are you doing for speedometer correction? A lower rear gear will cause your speedometer to show higher than your speed really is. Where is the electrical pickup on the G's? Tail shaft or rear axle?

dnhill

No change it must use front wheel sensor. There are two sensors mounted to the differential housing. The rev match is off slightly but I hardly notice it. I'm going to have the dealer change the ratio setting in the computer if I get a chance but its not worth paying for. I'm thinking about getting the tranny update done and get them to do it then.

dnhill

Quick update, sent the car in for tranny update. They were not able to find a setting for rear gear ratio. No error codes so I'm guessing it self calibrates for non-stock 3.69 gear. Don't have it back yet but once I drive it I'll post my opinion.

dnhill

update - No issues, no charge. They updated tranny program, fixed water leak and seatbelt retractor. Dealer was Bedford Infiniti (OH) they did a great job.