Originally posted by agent87
Ok ok, I'll believe you guys about the eta. 
But I still have a hard time accepting the fact that a chip would do much at all for any other otherwise stock naturally aspirated car. Wouldn't a company as reputable as BMW have tuned their engines and tweaked their programs to "perfection" from the factory already? 
h:
Oh, and the dyno day sounds cool but I don't really have any desire to put my stock d series on there. I can imagine that there should be some awesome cars and neat setups though!
heheeh well here its why. During the 80's they needed a car that great gas milage.
yep the eta "e" is also known as economy model. :chuckles:
so bmw tuned it for economy. you don't get same results from say an is. maybe 10hp tops but not like 25hp