I would like to show my NB build with BP-Z3 vvt engine and Revent turbo kit (sturovo/Matus/Revent lives in Slovakia 30km from my home, I detected it on this forum ),so why not to try it. My first miata was also NB with eaton mp 62 coldside supercharger. It was power limited to about 200hp cause high intake temperatures, so I decided to build another miata with td04 turbo. Car was rosted on standard locations (cause winter drive of previous owner). So we started with exchange of front chassis rails, and rear fenders. Then we continue with axles and polyurethane bushes.
I build BP-Z3 engine by myself, 10:1 CR pistons, new piston rings, forged conrods, oil pan baffle with piano hinges. I used BP-4W fuel rail and VICS intake manifold. Injectors are yellow top 420cc from RX8. New 6 speed trans, 3,6 lsd. Exhaust is from Revent - 2,75" stainless steel. Toyota cops - it needed to lathe little bit cause bores diameter for spark plug are smallers then on BP4W head/valve cover. Intercooler and pipings are also from Revent. Oil cooler with thermostat is located on the upper side in front of coolant rad. Suspension is KONI and brakes discs (270/276mm), brake cylinder and booster are from NBFL sportive with carbotech xp8 pads and braided hoses.
Car is running, feels strong. VVT is controlled by MS 2 boost control output (only ON-OFF style from app.2550 rpm to 4300rpm). Gateway is stock with 7psi regulator. Problem is that from about 5500-5800 rpm it starts to pressurize more - to about 11 psi at redline. Log is in attachment. Do you think that 420 cc rx8 injectors are not enough, or do I need adjustable fuel pressure regulator? Fuel pump is stock.