DaytonaRs4 wrote:anybody out there running the APR map?..
interested on feedback on this prior to decision, i would love MRC map but cant justify the 760 mile round trip for it

The APR RS4 tune doesn't have much of a history. Never have we seen any performance testing done.
Owners have recently dyno'd a few B7 RS4s on a dyno in California at 034 motorsports, all the same week so the data is reasonable for comparison. 2 of whom had an APR tune, the other was stock tune. One did stock vs APR same day.
The results were pretty terrible for APR frankly. All dyno numbers at the wheels (net of losses...no rundown or calculation)
Car 1 - BenSTI, freshly carbon cleaned
full ebwerks catless exhaust STOCK tune - 328 WHP
full ebwerks catless exhaust APR tune - 325 WHP
tune delta = -3 WHP . Yikes.
Car 2 - meem, freshly carbon cleaned
stock downpipes with cats, AWE catback exhaust, APR tune - 327 WHP
interesting to note that the ebwerks downpipes + catback did absolutely nothing vs. stock downpipes and the AWE catback. We have analysed this recently in a thread on audirevolution and found similar (lacking) results with ebwerks and their exhaust systems in performance testing.
Car 3 - RS4max - freshly carbon cleaned
stock downpipes with cats, AWE catback exhaust, STOCK tune - 328 WHP
Comparing meem to RS4max, it's not looking so good for APR on the RS4. They had the same mods, and there was no difference between stock tune and APR tune.
Bottom line? If you would love to get MRC, they have lots of satisfied customers.
If you're not able to justify the trip, and want a solution that doesn't require the dyno, and happens to have produced all of the highest dyno numbers and fastest acceleration tests, have a look at the JHM tune. You can flash your own car remotely with their cable. A few users here have the tune and can share their thoughts. We've (in RS4 owners in north america) tested every single tune out there from custom dyno tunes to the big company off the shelf tunes like APR/GIAC and whenever the cars are compared head to head, JHM cars come out on top in every race. It's pretty compelling.