Guide to Making Power in a RB20 (ECCS)

** This information is mostly hypothetical and assumptions are outlined as needed. It is your responsibility to consult with real experts for your engine build. **

So let me start off my mellowing your expectations; a RB20 is not a RB25 or RB26, you will never have insane low end torque, you will be spending a lot of money and you will face many headaches. RB20s take to mods very well, but have their ceilings. I will get into what those limits are and what you actually need to upgrade and what your wasting money on. It is a 2.0L inline 6 cylinder with a suboptimal head flow design, please have realistic expectations. 

The power and response of your engine is determined by so many different things, it is impossible to calculate. The information on this page is meant to outline reasoning for using certain parts and what they do to the performance of your engine. There isn't a magic recipe, so build the engine the way you want to. This is just a guide to help you determine what you want out of your engine.