Twin Turbo Compressor Map Plotting For RB26.

[Capt. Raptor]

I think I've finally figured out how to crunch the numbers for compressor map plotting. However do the formulas change if I want to run twin turbos, if so what are they? Specifically for a RB26 bored out to 2.7 L. Also what would you say is the best twin turbo combo for the RB26 for a goal of 500+ HP that is internally wastegated, ball bearing, and well balanced/good for a streetcar that will spool up well but won't choke out at high RPM should I choose to floor it? Thanks.

[WhatsADSM]

If you are doing the compressor maps, the flow along the X axis would be divided by 2. (Or conversely you could map as though each turbo was feeding a 1.35L).

Y-axis pressure ratio would stay the same.