cobradav
07-30-2007, 03:00 PM
I have read this very same subject over on the M5board. Many think that the 15 hp gain is due to the removal of the charcoal filter. IMO, there isn't any power gain to be made from the Dinan software. At best it raises your redline and the speed governor is gone. There is better software than Dinan's as posted by Cobradav. I wouldn't be surprised if Dinan actually bought this from another vendor and calling it as their own. They have done this with some of their performance parts i.e. Dinan Big Brake Kit which is a rebranded Brembo BBK.
If there really is a power gain from the Dinan software then separate removing the charcoal filter and do a pre and post dyno run on Steven Dinan's personal M5.
I agree it would be hard to separate and think you may have nailed it on the filter. Most folks do not dyno the filter removal or even do Gtech (or similar) before and afters. You would be hard pressed to "feel" the difference as there so many other variables. Possibly a series of in, then out, then back in , then out. But then you still have to control your environment including engine / tranny temps - is just so little gain that it just becomes a matter of " you should have seen the whopping big fish that got away" stories :blah:
If there really is a power gain from the Dinan software then separate removing the charcoal filter and do a pre and post dyno run on Steven Dinan's personal M5.
I agree it would be hard to separate and think you may have nailed it on the filter. Most folks do not dyno the filter removal or even do Gtech (or similar) before and afters. You would be hard pressed to "feel" the difference as there so many other variables. Possibly a series of in, then out, then back in , then out. But then you still have to control your environment including engine / tranny temps - is just so little gain that it just becomes a matter of " you should have seen the whopping big fish that got away" stories :blah: