Yes. It works on a carbuerated car.
Yes, it normally works on fuel injected cars. The RX-8 is one of them. What I quoted is directly from Mazda. When you hold the accelerator to the floor, the ECU reads that, and cuts the Fuel Injectors. Keep cranking, and if you didn't flood it too bad...
Of course, before you go through all of that, just try what Mazda suggests FIRST.
WARMING THE ENGINE
The Mazda RENESIS Rotary Engine provides exceptional performance dynamics and reduces exhaust emissions, allowing the RX-8 to meet the strict Tier 2 emissions classification in the U.S. Mazda...