[WydRyd]

RarlyL8, The Protomotive system delivers 400HP at the stock C/R of 9.5:1 @ 0.7bar Intercooled.

To go to Stage 2, 0.5mm C2Turbo head gaskets are used to drop the C/R to ~8.8:1, for 0.85bar/485HP capability.

For Stage 3, 930 P&C's are used with the C2 Turbo head gaskets and 0.5mm base cylinder shims. This setup runs 1.25bar and delivers approx 550HP (flywheel). This is the setup I'm running right now, with GT2-EVO CAMs.

If he's running 98mm P&C's, he should just slip in a nice set of 7.5:1 JE pistons and be done with it. At his current high 10's:1 C/R, he won't be able to lower C/R low enough with the C2T head gaskets, so he'd need to go with aftermarket pistons.

He can use any aftermarket style 930 headers, with a 1" spacer between turbo & collector to riase it a tad. Then he can drain the oil back into the lowest point in the CAM chain housing/cover.

Oil feed would be sourced from the oil pressure switch at the top of the motor.

He'd need to run a full length intercooler, plumbed into the AFM. Fuel & ignition would be left to a custom Protomotive CHIP & their fuel pressure regulator (they work as a pair).

I use a K27HFS and it works great up to this power level.

Hope this helps.