If you're sure it's an actuator problem and you can't find one then you have no choice but to eliminate the actuator. You can either install delete plates or half-ass it and wire the existing open. I have a 97 and one of the cables popped off the rod in the IMRC plate. It didn't throw any codes but it ran like poop. I would be certain that it was bad before eliminating the IMRC system because even though it's a poorly designed electro-mechanical system,.... It does work when it works. Gas mileage is another story. It's a Cobra, not a prius. I doubt mileage would be affected much, but I could be wrong. Low end (under about 4 grand) will suffer. Just me 2 cents.
Steve