OK a couple eta questions here

[pitbull09]

What exactly limits the RPM's on the eta's? Is it the cam? The ECU? A combo of both? Or what?? I was thinking of putting a turbo on mine but not really sure if it would be worth it due to the low RPM limitations? I know you can chip it and do other types of mods to it to squeeze a few more RPM's out of it but still.. I don't really want to dump a ton of money into it just yet since I do have a few other things in the works as well. But I would like a little better performance if possible? Any suggestions WITHOUT saying to do an engine swap?

[coreyw]

This might help: http://www.bimmerfest.com/forums/sho...07&postcount=8

[JasonC]

Another site with good info, http://www.strictlyeta.net/