I have an ESS TS2(8psi) which was taken off my e60 525i M54.I ran the kit for more than a year,including regular 2hr KL-Penang trips.No issues whatsoever,with the 6speed autobox or heat...the boost is so low and the twinscrew is so thermally efficient that it has proven to be ultra reliable.
I've actually sold the kit to someone for rm16k cash-n-carry,but it's been almost half a year and he has not shown any interest in collecting it.So if anyone is interested in the kit,match the price and it's yours.
Reeza 012-3939539