Just did the coolant bypass mod.
20 RWHP = improvement that you can "feel" but is not ungodly.
3-5 RWHP = improvement you would like to "feel" in order to justify the mod, so you keep trying until you convince yourself that you are "feeling" something.
I could feel the smoother throttle response when I added my Shaner S3 but I never tried to quantify it by saying my *** felt a 5-7RWHP gain.


