Has anyone ever installed a Donaldson M090535 so the inlet is facing the rear of the truck? I just got mine and it looks like it would flow way better the other way around. I have an M100465 on there that I modified but I lost HP/TQ with it but it looks like it would flow better than the 535 that I just got. Anyone dyno before and after the 535 install? Here is a before and after with the Flo Pro 5" straight through versus the M100465 on my truck. No other changes were made for the before and after other than the muffler swap. I have the cursor on the 70 MPH line because that's what speed I normally pull at. The drone is completely gone and it's much quiter but the loss in power is not acceptable so I'm going to try the 535 once I get my turbo back from HTT.