other than shedding about 100lbs from the car by removing the rear seat, interior panels, all of the stuff in the trunk, and running a cold intake and free flow exhaust, nothing special. the 325e had a completely different version of Motronic that nobody makes a chip for. it's a 2.7, 6 cyl. not sure on the HP level. stock it was 121hp. i'm sure it's less than that with the miles on this thing.
stopped for a hike on the way home. can you spot the bmw?