How much boost can i run?

[Norminator688]

I am putting a stage one supercharger from mpi on my 2011 phazer gt and was just wondering if it is ok to run full boost (11 psi) right away or should i turn it down to 5-6 psi until the engine is broke in? I have 32 miles on it now. I was told that anything over 7 psi i would have to run 110 is that ok on a brand new engine or should i wait a bit till i get more miles on? Any info would be appreciated.

 

[FLYBYU]

I would break it in. I would've waited until i got some miles on it until i boosted it. Without a headshim, i would max at 7. I thought MPI wanted you to mix race fuel all the time. There's other guys on here that might have more info than me. Just my opinion

 

[Norminator688]

In the instructions it says over 7 psi to run 110 and anything under 7 u can run pump gas. I asked the guy when I ordered it if I should wait till it's broke in to install it and they said it won't hurt anything to do it right away. As far as a head shim goes I haven't herd anything about it. Where can I get one? What exactly do they do? This is my first boosted sled so I wanna make sure I do it right the first time.

 

[FLYBYU]

Contact Allen at Ulmer Racing, he be better to guide you with the Phazer.He's a member on here
http://www.ulmerracing.com/