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Happy's 4/4/13 post in the 'registry' thread indicates that his RMS supercharger kit, questioned by Nick P, is not the esstuning kit, which Happy characterized as 'conservative'. I didn't see a more recent post from Happy updating his experience. 'Conservative' is more my style; I'm not drag racing, just considering improved daily driver performance. I chipped a 7.3L Ford F250 diesel, OEM turbocharged and intercooled, and the performance improvement was significant [235hp to 305hp, and you felt every bit of it on the road]. I would only consider the $5300 + install ess investment if sufficient 'beta' testing and long-term reports by others driving M54 with sticks [preferably E53s .....]
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2006 X5 3.0 6-spd w/Evo UUC ssk
sport/premium pkgs
born Valentine's Day, 2006.
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