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I spend more times on the M5 boards than I do here, only because I'm trying to follow in their footsteps. Once I found out the differences between the S63 and S63TU in regards to hardware and software difference, I felt we got the short end of the stick since the E70/E71 was basically a test bed to iron out the kinks of the S63 before BMW did their TU update and threw it into cars. I considered trading my X5M in as well for a newer one, but I got my S63 powered X5M for a great price with my most wanted options combo, so the money spent to upgrade to the S63TU X5M would far outweigh the money I could just spend upgrading what I've already got and still have money left over.
PTG? As far as I know, PP Performance has pushed the S63 the most, their thread died off, so I don't know what our trans is rated for. We can't use the M5 ratings as a gauge since their a DCT or 6spd, so this is also unknown territory.
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'10 BMW X5///M - Alpine White on Sakhir Orange - JB4 w/ HCP Stage 2 BEF, NGK 97506 @ .20, SS tubing & BMC filters, gutted cats, AC Forged 312 22's, H&R 2"
'98 BMW 740iL - ///E39 M5 6spd swap, fully built engine (sleeved, P&P, cams), 3.46 LSD, H&R Stage 2/Bilstein HD, Magnaflow 14816's
'97 BMW 328ci - ///E36 M3 clutch & L/W flywheel, Z4///M 18's
Last edited by m5james; 06-22-2016 at 09:35 PM..
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