Sooooooo folks.....just need to share some experience, strength, and hope here. First off, I owe a supreme debt of gratitude to all who contribute here and freely share knowledge, tips, and ideas; with a special shout out to Shodded (you ROCK Manu!). My baby is a '13 nonPP with LMS tune, CAI, and 3 bar with 105k. Recently started noticing a high pitch chirp/squeal at upshift when accelerated hard. Also NOTICEABLY sluggish and felt like soft shifting. I change oil religiously and pay attention to how it drives and feels. I was really worried The PTU was getting ready to grenade, or that I was going to shell out a rear turbo, or something equally catastrophic! I put a LOT of miles (almost exclusively highway here in KS) and don't get under the hood nearly as often as I should. NOTE TO ALL....DONT BE A DOPE LIKE ME! Get under the hood and the underside OFTEN, and just keep an eye on things! I'm a pilot and jet mechanic by trade, and know better, but allow my busy life to interfere with my responsibility as a steward of this fine car. Shame upon me! Anyway, I digress. I FINALLY got my head out of my a$$ and under the hood where it should've been some time ago. I noted some oil at the rear turbo hotpipe flex coupling to the turbo, and also at the flex coupling at the throttle body. I'm thinking "uh-oh, I'm screweed", but mustered up my courage and did what has been recommended by so many here. I PM'd knowledgeable members here, namely Shodded, and got advice on what to do. I checked for fluid in the CAC, found it came up to the first bump on the oil dipstick. Drained CAC using Mityvac 7120. Next, pulled the MAF and MAP sensors and thoroughly cleaned using MAF sensor cleaning spray (being CAREFUL to not touch sensor element itself). Both were coated with a noticeable but not particularly thick layer of oil). Cleaned intake pipe from CAC to throttle body. Did a 3x drain and fill of the tranny, servicing with Amsoil Signature ATF. Took the car out and gingerly tested acceleration. OMFG! Just the simple act of cleaning the CAC and sensors gave me my SHO back! No chirp/squeal under the gun, no shudder or hesitation, nothing! Just pure, pushed back in the seat $hit eating SHO driver grin! It was back like it was the day I put the tune on! Now, newly motivated, under the car I went and THOROUGHLY inspected everything, pulled the O2 sensors and cleaned all 3 and reinstalled with never-seize. Noticed a small leak on the PTU, pretty sure it's the compression seal going between PTU and tranny. Serviced PTU with Amsoil Severe Gear 75-140, using procedures found on this forum. Checked all steering and suspension components for wear, exhaust, wheel bearings, brakes, etc. I'm thinking I may have gotten a charmed car...because everything is actually in remarkably good shape for 105k of "spirited" driving LOL! Next on agenda...with tax refund....RDU servicing with Amsoil 75W-90, brake system bleed and flush with new fluid (Amsoil). Power Stop drilled/slotted rotors and pads, new front wheel bearings (Timkens). EPS hotpipe install with VTA BOV's, and if I can convince wife (better be able to, just bought her a brand new Subaru Impreza today LOL) Borla catted downpipes and cat back system. The moral of the story? DON'T defer or put off maintenance like this bone headed rocket scientist (ok, airplane mechanic) LOL! These are high performance rides and need some REGULAR love and TLC. I'm flat out lucky my putting off some relatively simple work didn't bite me. I have committed to being a better steward of my SHO. Once again, thanks to you all! I Only hope I can pay it forward. Planning on posting more often as I do my mods and continue enjoying this fine, fun vehicle. CHEERS!