[X5FX]

Just received my Racechip Ultimate from r33_RGSport
Install took 10 minutes, but only because it was the first time. 8 of those minutes were trying to figure out how to release the clips on the connectors. I can't imaging this taking longer than 2-3 minutes once you've done it a few times.

First reaction is WOW!
You can feel the difference immediately...I am just over 1000 miles, so still holding back...cant wait to try this full bore. I left it in the default mode, happy here although I may try pushing it a bit further after I break in the F15.

The tune is very smooth, and feels like what the F15 should be set to. I wonder why BMW doesn't tune the F15 like this from the start?

Thanks r33_RGSport for the advice, quick shipping and great prices.