Yeah fair call with the updated tuning required in off mode; ordinarily wouldnt expect anyone to invest the extra coin to tune in that mode coz who in their right mind would want the Vcam set as OFF once its been installed and tuned.
Yeah based on HKS graphs and others I have viewed they all look certainly impressive and I would be very happy to achieve your results at 19PSI.
R u running a 3" or 3.5" exhaust system?
Also, you didnt mention whether you are running Step 1 Type A, or Type B? If I move ahead with it I would be running Type A due to standard pistons.
Your mods would almost be identifical to those I have except your running the HKS 2530's and I'd be running the Garret 2860 -5's; comparitive turbos but obviously most rate the 2530's better if you willing to put in the extra coin. Not sure if you have had experience with both?
Is 24PSI ok with fairly stock internals? Seems somewhat high - unless this is just an occassional squirt and not an every day setting - also pending on the length of engine life you are also content with lol! 6months, 12 months, 24months etc.
No vcam on vs off graph, I guess because to get the most out of "vcam off" you also have to make a new tune for that situation. Otherwise it isn't fair.
But from what I can dig up online HKS say there is a shed load torque at low to mid range, and somewhat more at the high end. I suppose more torque means more exhaust volume which then in turn means a slightly earlier spool too. You can see the graph I hot-linked to.. the dotted line is "off".
I listed the mods. I forgot a few. Induction improvements (pods inside a stock looking airbox). Oil cooler. Nismo radiator and thermostat. Hard pipe kit. Nismo timing belt. HKS cam gear on the exhaust cam. 780ps clutch. Stoptech brake kit. Chassis bracing. Coilpacks. Hotter plugs. Fuel rail. Metal gasket.