Originally Posted by jacojet

I got the engine back from wren. It was repaired at half the cost of the original quote. Wren gave a new 12 month warranty on the engine, so any mods is out of the question. I am installing it into the F15, and will be flying it a lot hopefully. We will see what will happen! Leonie claims that none of the upgraded engines with the machined compressors have failed, although we have seen some on here. I think that everyone that has had a failure, especially those with upgraded compressors, should contact wren and let them know. I would urge the owners of such engines too contact wren and speak to Mike Murphy, give them a chance too repair and extend the warranties, then post on here the result of your inquiries. On this forum then, we can have a record of what happens to these engines.