Originally Posted by
joydude630
Hey Tony,
I have a OS Speed currently running on the 6 gallon.
What difference will I get from the EB Mod JX-21 Head Button for my OS Speed?
JX,Speed, and V specs all use the same OS button..
The Speed will have the same exact positive affect, as the JX with the EB button.

Look at the dyno graph posted in post #186.