does anyone out there have problems with their L, concerning the predator tuner ?
I installed 6# pulley and was told to install custom pulley tune.
Now I hear this valve noise when I go to pass someone.
Found out gas was not compatible (too lean), added more gas thru custom tune, but its still making the noise.....help

 

This valve noise you refer to is detenation. You need to get a custom tune asap. Do not go WOT anymore until then or you risk motor failure. Take all the timing out that the predator will allow also. This will help until you can get a custom tune.

 

And giver your tuner a call.