Ok Guys...
Minimumn Pulley Size is 65mm - Requiring E85 to avoid Knock. should see 17-18PSI
Our car is running the 2.1l HKS Stroker Kit, and the 65mm Pulley, Plus some new enhancements making 315KW At The Hubs. Thats 422HP, and then to convert that to Engine HP, which you americans love.... factoring in a rough guess at 20% Drive Train loss thats 506HP at the Engine.
Hows that sound????
We run this on our Track Car, with no Issues with IAT, Please see the below chart with our track data from our MOTEC.