Got everything installed on Friday and refreshed all the drive-line fluids with Redline MTL in the tranny, 75-90 in the diffs. X-drive fluid will be next, just need to get my dealer programming suite up and running first.

Just did a short 400 mile road trip to test everything out. I absolutely love the new ratios! Returned about 25 mpg at 80-85 mph the whole way without even breaking a sweat. (speed limits out here are 75 & 80 on I-15)

Anyone concerned about the 3.64 ratio's being lethargic/slow can put that idea to bed forever. I'm convinced that this should have been the ratio from factory. As the transmission ratios did not change, you still preserve the feel BMW intended, and suits the I-6 3.0 well. I honestly don't think towing performance is an issue at all either. My 0-60 is noticeably quicker as the X5 has more leg under her and requires at least *one less gear change.* I was not expecting this. My wife noticed as well. Time for ECU to get sharked with a 7k rev-limit extension to stay in that gear a wee bit longer!

I'm preparing pics and and slight modifications write up I had to do, as it was not an exact swap with the LCI. Nothing crazy.

All-in-all, I highly recommend this mod for the three pedal guys, especially those with the 5 cogs. I will post some videos as well.

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2005 X5 3.0, 6MT, Alpine White on Truffle Brown, Sport, Preim, and Cold Weather, Alpina Stainless Headers, AFe Intake, UUC SSK, OEM 87's, 3.64 Differential Swap,Performance Modified Euro 2 Tune, UUC LTW Flywheel and HD clutch, Bilstein B12 Suspension kit
Future mods ZHP/Schrick Cam Shaft upgrade, Operation code name:Doppelschrauben-Kompressor

Wife's Ride: 2011 e70 X5 351 M///Sport.

Also in the fold: 2004 X3 3.0, 6MT, Black Sapphire on Terracotta, port, Premium, Cold Weather.