Joe,

There should not be any problems. No one flies using full thrust all the time anyway. I don't know about the wrens but with a JetCat you can set your max rpm at whatever you want it to be. (up to the max rpm of course) you could also install a speed limiter just to make sure you don't overspeed your airframe. The other problem that you are likely to have is the increased weight, even if you were able to get the MW 44 you still have pumps, ECU's and batteries that will weigh the same regardless of whether you are using the 54 or 44. Fuel consumption would no doubt be less with the 44 but by how much realistically. I'm guessing you want them for your ME 262? Would definetly add a wow factor!

David Reid