well.... the X5 is for the wifey, I am just going to do a few cosmetic mods, not really hook it up, probably take it to Active Auto see if they can tune it, I don;t know if carl can do it....but i'll make sure it looks better specially because it's for the wifey!! , Not to keen in highly modding it, but looking into a few things like CAI, Tune, Good tune up HIDs on High, lows and fogs, and to eliminate the DDL and fogs on with high beams, EAS has the module, I have it on my M3. Just minor convenience stuff like that..

By the way, I know that the Sprint Booster all it does is give it a sharper and crisper Throttle response! I have it in My M3. As much as people criticize it, it does make a difference in responsiveness, and specially when i'm putting down more than 500WHP on the ///M.