You would notice a huge difference even if you were stock, even without any self made changes the stock s2000 tuned+, pre calibrated map offers a pretty significant power change. I'm not sure what the dyno would look like, but just driving on it feels a lot better.

We've got pretty similar mods and even at just that stock tuned+ map it felt like a different car. Ok, that might be an exaggerated statement but I'm not quite sure how else to say it. The power band in the middle feels significantly different.

That's my experience, but I don't have a dyno graph or factual numbers to back that up.

 

This may help if you haven't seen it yet:
https://www.s2ki.com/forums/index.ph...pic=746767&hl=

Brian