View Single Post
      09-07-2012, 11:52 AM   #25
heavystarch
one day...
heavystarch's Avatar
United_States
49
Rep
134
Posts

Drives: Golf R tornado red
Join Date: Apr 2008
Location: Utah

iTrader: (0)

Quote:
Originally Posted by smashhell View Post
So what do you think are the potential of the M5 engine?
This Stage I Velos Tune appears to just be a software tune w/o any other modifications; that's a very nice +13%Hp and +16%lb-ft. (I'd need to see Velos' stock baseline dyno runs to make sure my math is right - I was basing that off 560Hp/502lb-ft reported from BMW).

As others have mentioned, there are shops making 400Hp easily with the N54/N55 motors in 135i/335i/535i.

So extrapolating from those numbers we know that typical aftermarket boost upgrades generally gain 15-25%. I would not be surprised if we soon see 650-750Hp M5's/M6's. Probably a Stage II style setup that would include a Software Tune and aftermarket exhaust (maybe cat back, new high flow cat and/or turbo back...I don't know).

750+ will come with Stage III - improved intercoolers, fuel delivery system, turbo back exhaust, etc...

Given enough time and money shops like Underground Racing, HPF, Hennesy, etc could take the S63 motor out to +1000Hp.
Appreciate 0