Just an FYI, we can make serious N/A power with the 63s and just bolt-ons, we fully expect to hit 540-560rwhp (with supporting bolt-ons) with our H/C coming in 4 weeks on 3 different 63 AMGs. We will be trapping every bit of 128-130mph and then will spray a 100 shot to get final numbers before we convert to 7.0L strokers.
Making N/A power is not even close to as easy as it is with FI. Pulley, TB and tune will not net you 100rwhp. Making N/A power requires skill, knowledge and experience above and beyond that which FI necessitates. It's easier to kill power on a cutting edge N/A race motor (like S65, S85, M156, M159) than it is to make it.
Here is Keith's (customer) current record holding C63 (MHP S3, soon to be cammed) earlier today at Orlando Speedworld, 11.44@123.64:
He's yet to hit the dyno since the install of our new 3" race catback (was used in race) but we expect 25-28rw gains based on his avg trap speed increase and reduction in 60-130 times (8.76 to 8.46 with addition of race catback).
Race catback idle vids:
We can't wait to tear into a S65.
The switch to the TT 5.5L DI 4Vs from Merc will be accompanied by a switch to the next gen of Siemens 104 byte RSA encrypted ECUs so don't expect anything but a piggyback tuning solution anytime soon.
The 2010 Audi S4, Porsche Panamera, GT2, TT are among the first to use the new family of controllers. OEMs are stepping up their game bigtime in this regard.
Even if the encryption keys are leaked we're still screwed with this ECU.
Thanks