Where do I start

[soulcontroler]

I have a 1990 525i with m20 motor I want to add some spunk to my motor any advice on where to start?

[CleanE34]

swapping it? offthewall has a turbo setup. ask 'em.

[PorscheH6]

An engine chip is usually the first step people take to get some power out of their E34.

Read this page. http://bmwe34.net/e34main/upgrade/Recipe.htm