How to install a catch tank and why? Porsche Cayman 987.2 3.4 - best mod to reduce carbon build-up 

Top tip: if you are struggling to fit rubber pipe, soak in for a couple of min in very hot water, it makes life a lot easier

People are missing the big picture. The amount of oil in the catch can is almost irrelevant. The most important thing is that the amount of oil making it to the plenum is minimized. From your 1000 mile later follow up video, it appears that has been improved but not eliminated and with only 5-10 ml in the tank, that means the new AOS is doing the bulk of the work and doing it reasonably well. The tank is only doing a little bit. At least it's cheap, light, and easy, so can't really hurt. To effectively get vaporized oil to fall out of suspension (air), you need some combination, volume, time, low temperature, and places for the microdroplets to seed. This is where a large catch tank could benefit--not because you need to capture a large volume of oil, but because high velocity air in a small tube slows down when it enters a larger volume, like a river dropping it’s sediment at the ocean delta. High volume=low speed=more condensation. The air also has extra time to traverse a larger volume (especially with baffles, which also provide seeding opportunities) before being routed back to the intake. Longer time=more condensation. I don’t know the solubility curve of oil in air at various temperatures and pressures or if the difference between ambient vs engine bay temps would be significant enough to be worthwhile, but lower temperature=less solubility=more condensation. So an ideal solution would be an infinite volume with a heat exchanger and plenty of capture points, but that just isn't practical. Would an inline oil cooler mounted at the side vent, then routed to a larger tank make sense? Maybe. Would all this complexity and expense be better then walnut blasting your intakes every few years? I'm skeptical.

Great stuff, will be trying this out.

Thank you so much for share!This is really help!!!

Did my air oil separator last year , this is a interesting upgrade , are you running the standard 74mm throttle or 82mm on your ipd plenum? Very interesting videos you know your stuff ..

I took out the brass filter inside as it causes quite a bit of pressure /resistance. I reckon the round baffle plate inside would suffice. mine is not direct injection so shouldbe ok I guess.

Nice work, i have just purchased the IPD comp plenum and GT3 throttle body for my R and was woundering how long the install took you ?

The tube/pipe reducers,/adaptors, are they automotive parts or general hardware items, could you show a link, I'm having difficulties locating some in Australia thanks

Hi Darren, were you getting a puff of blue smoke on start up and did it clear after fitting the new AOS?

The pipework for the catch can reduces to less than 10mm at the inlet and outlet of the catch can unit. Was there any issue with the narrower pipe diameter, back pressure etc?

Good afternoon, where can I buy that oil decanter and the accessories for the 987.2? Thank you

how open did you dump out collected oil? And I am wondering location of catch tank should be lower or higher than actual AOS outlet?

Hello, I installed the same catchcan, but my question is whether you connected your catchcan before the AOS or after the AOS? Mine was installed after the AOS. I do have the impression that I have less power. Kind regards Attila from Belgium

Thanks 🙏 A question pls … is there any way of deleting the AOS totally?