We covered every base....even did some math!!! Results...initially a loss of about 10hp!!!
...
Unfortunately the header effort has been a confirmation of suspicion mission and not a hp gainer. It's at the coater as we speak....we'll see.
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I guess I can save some money on custom exhaust work, then

As for ECU programming, Dinan does have some downloadable software for the M44, but you have to got to a Dinan authorized shop to get it installed. I'm thinking about it, but mostly to give me a few hundred extra RPM before the rev limiter kicks in. With the gears I've got (3.64:1), I think that will help me avoid a couple of shifts (or at least move them to more convenient places). Besides, I think showing up to my local BMW dealer (and Dinan authorized shop) with a race car could be fun!

-noam (finally, it's almost getting warm enough to get into the garage and actually work on the car)