Ruien universal catch can. $30 dollars on Amazon. Let’s hope it works well. I picked up some 1/2 inch heater hose for the lines.
I used this one off Amazon. As reviews say, throw out the hose and get some fuel line hose from your local auto parts store for cheap.
I just got a cheapo amazon special that holds ~350ml. I've noticed the fill rate to be about ~100ml per 300-400 miles once the flow is established. I'd go with a larger volume if I were to buy one again so I wouldn't need to empty it as frequently.
Oh and this is on Amazon used it for at least a year or more now seems to hold vacuum perfectly as after shutting the car off I can take the fluid level check dipstick out the top and vacuum pressure releases even after 10 minutes of the engine being turned off Ruien 0046 Polish Baffled Universal Aluminum Oil Catch Can Reservoir Tank Black https://www.amazon.com/dp/B06XK9PTP7/ref=cm_sw_r_apanp_f4HbuZM6KPUAh
Catch cans are simple, I don’t see a need to spend money on a fancy one.
I run this one: amazon link
There are others that are similar.
If you go this route, read the reviews and get 4 feet of 3/8 fuel line, because the hose it comes with is garbage.
No matter which one you get, install is super easy.
Just an FYI: you can remove everything in that link after the ? since that stuff is just tracking info. ie:
https://www.amazon.com/Ruien-0046-Universal-Aluminum-Reservoir/dp/B06XK9PTP7/ref=asc_df_B06XK9PTP7/
That's not true. A lot of the ones on Amazon and ebay cone with a filter material you can cut to size and shove in the filter chamber.
I have this one from Amazon that im about to Plumb in series with my AOS on my WRX to avoid pushing oil at the track.
Haha, we're going to have to start our own little club or something.
This is the catch can in it now Ruien 0046 Polish Baffled Universal Aluminum Oil Catch Can Reservoir Tank Black https://www.amazon.com/dp/B06XK9PTP7/ref=cm_sw_r_apanp_mtmDo1bZPn8MJ
It does it's job. I'm happy with it. I just bent a little piece of aluminum plate and drilled a few holes to mount it. Couldn't find a good spot for it with the included hardware so I just made my own.
I have a showier one with a bigger vent and easier drain, but couldn't figure out where to mount it, so I figure I'll save it for my LS400. EVIL ENERGY Universal 10AN Baffled Oil Catch Can Breather Can with Drain Valve with Filter 2 Ports Aluminum 750ML Black https://www.amazon.com/dp/B08FHQ3SHJ/ref=cm_sw_r_apanp_CHSleManaTmL5
My undershroud didn't come from Z1. I got a replica from @VQPlug in IG for cheaper. It works great, I just had to get a junkyard bumper that had the clips on the underside intact still (didn't feel like repairing mine with a fiberglass kit). I can't jack my car up from the front center jack point anymore since the shield is in the way, but whatever, I just get one side at a time now. I like knowing the underside is protected, and it's also easy to look down at it and see if anything has leaked. I'd like to get some more of the plate and make more undershields for other areas like Donut did on their BMW, but my plate is full.
VQplug has some cool aftermarket parts. I'm waiting on a strut brace from him.
Ruien Polish Baffled Universal Aluminum Oil Catch Can Reservoir Tank Black https://www.amazon.com/dp/B06XK9PTP7/ref=cm_sw_r_apan_glt_fabc_MMX29B3X8N10PT5H9QQE?_encoding=UTF8&psc=1
I bought a set of regular (but Chinese fake "red top") coils from Amazon for $80. They work great. You should pull a coil and see if oil is in the plug well since that's super common. Easy to replace the valve cover gaskets which cause that. You should check the half Moon gasket on the driver side for leaks which is common and change it at the same time. That's a little more involved since it requires a special tool to compress the cam chains tensioner and lift it up. Kits tend to be bundled with the tool but you gotta be careful with it because they are cheap plastic and can break.
I wouldn't recommend the catch can I bought since it is a leaky POS. The one that comes with the kit looks like good quality but it's quite expensive.
Ruien Polish Baffled Universal Aluminum Oil Catch Can Reservoir Tank Black https://www.amazon.com/dp/B06XK9PTP7/ref=cm_sw_r_cp_apa_elTNBb467G8NG
Ignition Coil Pack Set of 4-1.8T... https://www.amazon.com/dp/B01HABEZO8?ref=yo_pop_ma_swf
That catch can looks much better and those are the coils I bought.
I got this one on amazon. Get the recommended rubber fuel line if you do, as the line it comes with doesn’t mate-up to the intake manifold.
For the price I paid the quality is very good. All aluminium and very solid. The only thing I had to do is replace the lines that were provided, they were too flimsy.
I do not daily my S2k. It mostly sees weekend and autocross driving. I only purchased the catch can because on certain course configurations when autocrossing the car would suck a ton of oil through the PCV and puff a huge cloud of smoke out of the exhaust.
This is the catch can I purchased:
https://www.amazon.com/gp/product/B06XK9PTP7/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1
If you do decide to go get one I would recommend disassembling the unit and cleaning it out. There could still be burs/chips left from the machining possess which would be a nightmare if they were sucked into your motor.