| First off if you have a boost controller you should be able to set it to what PSI you want. That's the point of it. Couple rules of thumb. 13/14 = ECU Upgrade (healthy)15 = Pushing it but known people who have
 16 = Very risky (on race gas you can get away with it)
 Memory serves me correctly anything above 19 PSI and your turbos will be toast.  
 |