Originally Posted by njwebber
i was wondering if any one knows of any good website's for performance part's and or replacement part's perferably performance part's thanks for any help
I have a 525i which I'm about to stroke to 2.7 liters by using parts from 528e. You can easily do this other way around:
Take the eta head, and throw it as far as you can. Then check the pistons, what is the compression? 11:1 is good (what I'm about to use), 10:1 (super eta?) is good and the others are crap. If needed, change pistons to higer compression (don't really know if US gasoline is good for higher compressions..).
Then get a normal head and intake from 325i, change the camshaft to 280 degree unit, use the 325i throttele body and airflowmeter from m30b34/5 engine. You need to change the electrics from your current airflowmeter to it.
Then take the car to specialist who can upgrade the engine management to handle the new parts... Then just drive and enjoy. You have the torq of your old engine, but much more power on higher revs.
ps. I hope this is what you ment by "performance parts" and not wanting to glue some glass-fiber "look-at-me-imidiot" shopping trolley handle on yor car...