race gas

[quadrider11]

if i get a 11:1 high comp piston will i have to run vp or can i just run pump 93

[underpowered]

93 pump is fine.

anything over 11:1 you have to run race gas

[quadrider11]

which is it do i have to or not?

[underpowered]

i run an 11;1 on 93 with no problems. anything OVER 11:1 requires atleast a mix. if i run mine hard, like racing, i run a 50:50 mix of 93 and 113.