Hi I am building an EK hatch with an obd2 gsr swap. I got the car with the blown gsr so I am rebuilding it. I am going with N/A. I was wondering what the maximum compression i can safely run and still be able to use pump gas 91 or 93 octane. It is going to be a mostly stock block and head. I have heard that the highest you should run is 11:1.

thanks in advance

Rob