Here’s some interesting results after playing with my desktop dyno….
Again, just looking at options to increase power in a stock 22. I used the 22R specs.
See the attached Excel sheet. Please let me know if you cannot download and view it.
I’ve been told by a reputable 22RE engine expert that raising the compression to 10:1 in 22RE will require a change in the Engine Management System (e.g. MegaSquirt), and obviously running a higher fuel octane, and carefully adjusting ignition timing.
At a ˝ pound increase in compression over stock, I believe the stock injectors and ECU will work fine. You would have to test and carefully adjust the ignition timing and go to 89 or higher octane fuel.
Depending upon how you increased the compression, as H8PVMNT has suggested, an adjustable cam timing gear would be a good idea.