| Well, the Q5 need some love. It was starting to burn/blow by oil with the occasion PCV P052E00 soft fault. As well we had a oil filter housing gasket leak confirmed by a local repair shop. I'm not sure if oil from the housing or the PCV was the cause, but for the past few month we've noticed a good puff of smoke on aggressive pulls like passing a person. Not mention it was needing a 1qt of oil around every 500-700mi.  So like normal, I went over to my buddy's place and we got this knocked out. Nothing too existing about removing the supercharger, but once we got to the coolant pipe that goes over the passenger side fuel rail, it cracked while taking it out. I had read this was possibility so I had a new one read to replace. Once the runners were all out, we only had one fuel injector come out with them. That go a new set of o-rings. I went around to each intake valve to soaked them with "CRC GDI IVD Intake Valve & Turbo Cleaner". There was some carbon, but it wasn't crazy and of course I forgot to take a picture. By the time we started putting the runners back in I forgot to look back in there to see how well the spray removed the carbon. I also stupidly forgot to suck out all of the chemicals so we had to do a spark plugless crank (fuel pump fused removed as well) to flush it all out.  As for the crankcase vent valve everything went in smoothly. I opted for a new "y" shaped breather hose assuming the old one was likely very brittle. Man they took some effort off of ports near the rear coil on each site of the engine.  As for the oil filter housing, that went pretty smoothly as well, it is just in weird position. I had a lot of people say they could remove this housing without removing the supercharger, and I struggle to understand how that is possible. That said, after removing it, the old gasket was certainly flat and hard. Since I replaced the entire housing it came preinstall with a new gasket and oil filter. I think if I ever need to do a tstat or waterpump job I would likely replace the oil filter gasket again just as preventative maintenance. I'm sure my B8.5 S4 is likely due for a new gasket as well.
Last on the list was to get the coolant replaced. We vacuum filled it, but on first crank realized we forgot to plug in one of the fuel injector connectors. So supercharger had to come partially off again to get that connected. We did swap over to the metal 034Motorsports supercharger bleeder screws so getting the air back out was quick. There certainly was a good smoke show with all the cleaner from the intake values once it was running. Reminds me of Seafoam treatments back in my MK3 Jetta VR6 days. The next day after everything was put back together I gave it a fresh oil change with Liqui Moly 5w-40. Gave it a good drive and everything seems to be good. No noticeable performance change, maybe a little more torque down low, but the puff of smoke on hard pulls seems to be gone. Too early to tell if oil consumption had gone down. We have 600mile road trip coming up so we will be testing this. Fingers crossed everything goes well and maybe we can finally get a aftermarket heat exchange and go Stage 2 later next year. Parts List/Links:
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