One thing I love about Mazda. Where companies try and achieve the perfect power to lag ratio when picking their turbo chargers, Mazda picks whatever size they want, the revolutionize a way to reduce the lag otherwise. Examples
FC (TII)- first car to use a fuly independent twin-scroll turbocharger. A valve closed down to act like a nozzle to channel the exhaust gases at the turbocharger blades at a higher level of speed in low RPM, when the car neared 4,000 RPM, the valve opened and allowed the gasses to hit the by-now fully spooled turbocharger at full tilt.
FD- first sequential turbocharger system, the car feeds its exhaust gases to a small turbocharger that spools nearly instantly, when the gases build up to full pressure, the car switches to a larger turbocharger for the full power
Rx9 (FE?)- will be the first car to utilize a turbocharger that will be pre-spooled to half its PSI output in idle via an electric motor (when the car is in some form of "R" mode so the engine doesn't die early by getting constant boost even at idle daily driving), when the car hits past 2,000 RPM, the engine is already making full boost all th eway up to the 9,000 RPM redline., A blowoff valve combined with the electric motor will also keep the charger from spooling down during gearchanges, when the clutch it release, the blowoff valve re-closes and the electric motor lets the gases take over. The system will allow the turbo to spool down if the brake is pressed sensing that the drivers wants to downshift, once again, this system is only in a caertain driving setting, so those weary of how the new system works can chose to leave it to the familiar old fashioned way of making boost as well.
The Rx-9 will employ the 16X 1.6L rotary, and engine said to possibly be finding its way in the 2009 Rx-8 making an astonishing 280 bhp naturally aspirated. this is unheard of for a road-going rotary engine. The turbocharging system along with tweaking to the block and components expect the 16X-T in th eRx-9 to make about 380 to 430 bhp.
None of that is set in stone (except the FC and FD history information, oh and the 16X block itself, it's actually already on Mazda's website) but everything seems pretty cool, I hope this info helps.
On a side note, I'm not too upset with the Rx-9's looks, I personally didn't expect anyhting to ever top the FD's styling, looking at it (for me) it is the epitome of perfect design, it simply can NOT be further improved over the 99 spec parts.
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