Water and AFR

[mx5]

Originally Posted by slostar

its not a great deal diffrent, thats probably why i didnt notice it while just watching the guage.

Because adding the water won't change what your lambda meter reads. The lambda will be the same. There is no difference.
So just tune the fuel for your power optimal lambda levels and forget that you have the water (it just works in background helping with cooling and supressing pinging)