Hello FRF friends! About six months back I purchased my second Raptor (I wanted the Roush) \and the IWEs have been giving me hell! At 7K miles I noticed when climbing the sand dunes that my IWE (left side) was popping and inhibiting me from maintaing speed while climbing a dune. Took it to Ford for warranty work, sent me away saying it was "normal." Went back to the dunes and it got worse, much worse. Went back to ford and they acknowledged my issue (you could just put it in 4x4, drive straight and you could hear and feel it popping while mildly accelerating). The mechanic said it wasn't the IWE as he inspected just the front side; it was my transfer case, so they put a new one on and sent me on my way. Went to the dunes and same ol' shit. Went back and expressed that it was indeed the IWEs and had them take the driver side apart. What did he find? The backside of the IWE solenoid was cracked. They replaced half shafts on both sides, and IWEs on both sides. Problem solved! Until yesterday... Went to the dunes, was climbing up and POP! The driver side IWE blew out again. Might I add I'm not by any means trying to place my truck under massive amounts of stress or load, I just really want to use it for what its intended. The hill wasn't even that large, just a lot of loose sand. I'm going to take it to Ford tomorrow, but my concern is that the HP/torque contained in the Roush cannot be maintained by Ford's IWEs. ….So the story continues, I figured I’d wait to post to a thread and have been adding to this story as things progress. Ford replaced the IWES mentioned above (a second time). Today I went to the dunes again (two month since last episode), which are the general terrain in Southern Utah. We had a great day without issue, that is, until it was time to leave. I packed up the dog and my son and was headed to the paved road. To get there you need to build a little bit of speed as it up a hill. Got almost to the top, gave a little more gas and pop pop, IWEs blew again ( I feel like if the wheels spin just a little bit under torque they blow). Had to reversed down, 4X4 quit engaging, sank in the sand, and I was pulled out by a Duramax, thus my bruised ego (everyone laughed at the Raptor’s performance). I have a hard time wrapping my head around this. I have much experience off roading but the Raptor hasn’t been living up to its name. I have a built 2004 Expedition with almost 200k miles that does better at the dunes than this thing. Anyway, does anyone out there know of anything aftermarket that might withstand tolerances a little better for the Roush, or do I need to keep blowing these things up until ford provides a better option? Thanks for reading!