you guys are aware that it i8s a twin scoll turbo, nothing close to what you run. I make full boost @ 3000.

You also said losing Gas mileag without getting back into the system? is this becuase the ECU adds more gas, I would think the o2 reading would lean it down to match the lost air that was there during the MAF reading which was sent to the ecu, whihc is in 100% control on these RX7s. They also learn mods and adjust acoordingly. for optimum performance.