You are still not getting the point about consequences. Without any hard data about how well your car is running you are assuming all is well when it's not. Running the Lex/550 does compensate each other and pushes fuel cut up, but fuel cut was there for a reason. You have to remember also that at these levels a CT26/57 will put out more lbs of air at the same psi of a CT26. Tuning devices, data loggers, wide bands are a must in modifying just as an exhaust system or intake system. They are necessary to get you were your going without consequences.
Sorry to sound like an arse... but we don't wanna see another supra sit next year out.