Subaru STI Cylinder 4 Reverse Cooling Mod | COMPLETE & DETAILED INSTALLATION |

Installation of the Cylinder 4 Reverse Cooling Mod on an STI | GetaDOMTUNE |. This is a step by step guide so, no more excuses! I go over the theory of how it works, the completed & detailed installation, and offer tons of tips and info along the way. This particular install was on a 2020 Subaru STI and while the specific kit is the GetaDOMTUNE kit, these are the same steps for ANY kit you decide to get. These videos take a lot of time and effort, please share this video on Subaru/STI circles! Thank you!
For this Install, these are the tools you will need:
GetaDOMTUNE Cyl Four Cooling Mod →→ amzn.to/3aiNKox
Hose Pinch Pliers →→ amzn.to/3cs4Pwc
Hose Cutters →→ amzn.to/2Z1iWV5
1” Crow’s Foot Wrench →→ amzn.to/3amr3j7
12mm Hex Bit Socket →→ amzn.to/3r689E0
No Spill Kit →→ amzn.to/36qqFPy
Clip Removal Tools →→ amzn.to/2L92kq8
Ultra Grey Gasket Maker →→ amzn.to/3r68mHi
Oil Drain Pan →→ amzn.to/3ahX3Fm
½” Breaker Bar & Extensions →→ amzn.to/2MkzL9L
3/8” Ratchet & Extensions & 12mm Socket
Bit driver & 7mm Socket & Extensions
Channel Lock Pliers →→ amzn.to/2NIbcUr
Small Wire Brush →→ amzn.to/3oCqs1S
WD40
Coolant (If not reusing old coolant) I recommend the proper Subaru Coolant to protect head gasket from failure
Notable Sections:
Intro 00:00
Theory of Operation 00:27
Cylinder 4 Cooling Mod Install 3:36
Purging (Burping) the Cooling System of Air 13:08
Final thoughts 19:58
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Thanks for Watching!
#STI #SUBARU #WRX

[@seansimpson2932]

Literally the only video that goes into detail and answered all my questions thanks bro 🙏🏻

[@akqjtn]

Awesome thanks for watching!

[@BTL3.0]

I don't even own a Subura but can appreciate the thoroughness of all your vids. Keep up the good work.

[@akqjtn]

I appreciate that as well. Thanks for watching!

[@ChrisHale0629]

Just wanted to say thanks for this. Of all the how to videos for this mod yours is by far the best. Clear, concise and fantastic video. Thanks!

[@micahgunnell]

Such a thorough and well thought out video! Your camera set ups and lighting are so clear...also, love how you labeled all the tools! Thanks 🙏 I really appreciate you making this job easier!

[@chrisschenk_]

One for the best videos I’ve seen about installing any part. Thanks 🙏🏼

[@iAmJonJCP]

I played back this video so many times... the result of this was getting my GetADomTune Cylinder 4 cooling mod installed and burping coolant for the first time in my life. Thanks so much for making this video!

[@RacingAlien]

Excellent video. I have seen like 4 or 5 for the same mod just to see that there is nothing i might be missing, and this one video is the one that is needed. Well spoken, clear views, tools used. 11/10 overall!!!!

[@deltafire5058]

This is the best install video for this mod on KZbin. Took me under an hour with your guidance. Thank you for sharing!

[@chrisdickson363]

Literally the best install video I have ever seen.

[@alendori]

That's a superb video that requires so much effort. U deserve a medal. If only the world is like you, so helpful! Cheers!

[@donAKAthedonjp]

Perfect DIY! Absolutely perfect! Thank you!

[@davidrydl3864]

Loved your video. very detailed, didnt leave anything out and great camera placement. because of your video, i feel pretty confident i can do this on my own.

[@Studio603OnTheAir]

Good Job, thorough to the point, matter of fact and suggesting the right tools such as the coolant refill set up was a great help. I've been wanting to do this mod for a while now and you took out any hesitation that was stopping me from pulling the trigger. Thanks

[@avigil9961]

Well done! Its been forever that ive watched an entire video. Your tobe and pitch were on point. Very consistent info, the footage was clear and steady. Really impressive. Easy to follow and easy on the eyes.

[@Car00071]

Great video! I like how you went through with the video and thoroughly explained everything adding tips and tricks to help out.

[@edgaralonso6638]

This a awesome guide. I couldn't get my hands on a 1" crow foot wrench in time for my installation so we just tightened it with a 1" deep socket first; then we attached the hose and tightened the clamp with a tiny ratchet and 7mm socket. It was super simple this way for anyone who doesn't have a crow foot wrench.

[@akqjtn]

Glad it was useful. Thank you very much for the tip!

[@eustacerene4324]

Very detailed installation. Thank you. Definitely a mode I will install. 🙏🏽

[@TheJasbmx]

Exelent video Mostly all KZbinrs don't want to deal with the hassle of having the camera and show everything so they just rush to it I appreciate all the details of the vid . Will be doing this to my 2020 sti.

[@WRXhatch13]

So detailed! I feel ready to do it myself now, thank you!

[@erickcarrillo7378]

this is honestly the best video that explains this mod

[@markelliott7917]

Great camera angles and lighting makes it really easy see what youre explaining.

[@karamirez92]

Thank you for this video brotha. Youre always so detailed 🤟🏽

[@ericn7698]

Nice instructional video! I installed the VEMS Tuning version myself. It's convenient because there's no silicone sealant necessary. Honestly, all the versions are exorbitant for what they really are: a length of hose, a connector, a couple of clamps, and a T fitting.

[@gainedhumanity]

2 years later and still using this tutorial for my 06 wagon.

[@rcwonders7908]

I followed ever step and did my cyl 4 my self . Thanks for a well detailed video.

[@akqjtn]

Awesome!

[@Jabbazuki]

I can't wait until one day you need to either upgrade or change your clutch... because I can only imagine how detailed that install video will be. You are truly the greatest and I am a proud subscriber!!

[@akqjtn]

Thank you my friend. Comments like this make it all worth it (although I don't want my clutch to go 🤣). Take care!

[@teresawarrendavis1445]

Thank you! Explained everything perfectly!

[@andrewknutson91]

Just did the install yesterday and finished up today. This was an extremely helpful video. Just like your IDoing head unit install. With this one, I had to do it a little differently since, I'm sure you know now, the coolant mod hoses are now bent at a 90 degree angle, I had to screw the barb in by itself then mount the hose. That's pretty much the only difference. I still don't understand why we had to pinch the hose but I did it anyway and after a good 20 min, I didn't get any more bubbles and temps were smack dab where they should be. I will continue to monitor throughout the next week or so and then I'll throw my under cover back on. Thank you for the really informative video.

[@ThatsitWeregoinfishin]

Best video for this!! Doing it this weekend!

[@onety-one9087]

Thanks for the diagram and explanation. You provided what no one else did.

[@GLE]

That was incredibly detailed! Thank you 🙏

[@MikeLRGCar]

Absolutely clean and step by step presentation 💯👌🏻 Congratulations job well done 👍🏻 Thank you for posting this video ! Cheers🇨🇦

[@N7GOTTI]

This dude give a master class in all his videos

[@bighitmayfield646]

I subscribed, you literally saved me from getting soaked in coolent from the bolt that's connected in the block that you place the hose on. I was told I didn't have to drain the coolent.

[@tonio6403]

Great video Only issue I had was no heat unless I was giving it gas so I switched my tee fitting to the heater core inlet that allowed me to have heat this past winter. Also a few friends of mine also with bugeyes had this issue. But it works great

[@666gene]

you made this install easy thank you!

[@toddscheinoha3696]

Nice job! Appreciate your detail!

[@10MMsocketfinder]

Awesome tutorial bro. As soon as it warms up I’m gonna do the same to mine.

[@danboldt]

This is how to make a "how to" video. Extremely well done.

[@HavokStrifeX]

Thank you for this. Particularly the crow's foot. You are literally the only person that even shows the fastener tightened to the block, let alone properly explain how to do so. I even asked people wtf they used to tighten it. Everyone says an adjustable wrench, channel locks, or vice grips. I have multiple sizes of each but speaking from experience, that steering part in the way makes using those tools not really possible. Now I can break the thing back out and throw it on next coolant flush!

[@akqjtn]

So awesome to hear that. Thanks for watching and share!

[@jayhaverstock2475]

Excellent video. Best 1 I've seen - BY FAR! Great job!

[@akqjtn]

Thanks!

[@lao4me]

Very detailed and on point thank you very much will be doing this mod in the near future. Thank you champ.

[@Dadylongarms]

Amazing Video. Learned a ton. This is my next mod.

[@fernandor887]

Sir you do great videos, detailed and straight to the point. I just subscribed

[@Menace_sti]

Jesus what a good install video man so detailed 👌 awesome bro

[@dcrews8732]

Excellent job! And explanation

[@tone3973]

Thanks for the full details man! Just subbed

[@michaelsmith8087]

Best video on this by far!!

[@dougcastle1785]

Amazing detail 👌. You made this look so easy. Ty I feel comfortable doing this myself now

[@akqjtn]

Thanks glad it was useful to you

[@stanleyaragon5349]

Super detailed and well explained

[@waynexu7915]

Welcome back!!! I just got this part one month ago and ready for install, then you post this video, what a coincidence. LOL!

[@waynexu7915]

@@akqjtn You have really taught me a lot！I like the logic and process of your all video very much. You are definitely a good teacher If you teach in school. I try to replace a new Radiator and plan to add this Cooling Mod at the same time, but I am still confusing that dose the Cooling Mod needs to be pinched all the time during the system burping? Or it should be unpinched before the engine starts?

[@matd8958]

Awesome stuff 👏. I hope some day you go for big power so i can build with you . Great instructions my friend. A+

[@sunnydee7745]

Had my 21 sti for almost a year and i got it right before summer ended, so im experiencing my first full summer with the car and today i got to see first hand how my sti would act during 100+ degree weather. I had low throttle response and when i had the ac on and i gently pressed on the gas, itd go to 1100 rpm then go right down to about 700rpm even when my foot is still pressing on the pedal lightly. Did some research and it was just heatsoaked. I want a ic sprayer but dont trust myself to diy it with the wiring. So this may be the next thing ill do the next time i change my coolant. Considering the video is super informative

[@Atlan_tis]

Wow , the best video with explanation, I was looking for it 👍🏻👌🤝

[@mannypacheco3554]

Great job thanks for your service🙏🏼

[@tsunami5834]

I’m proud to say.. I did it. Thank u baby lord Jesus… now spark plugs please

[@hcdkey8521]

Great video! Very detailed, I am planning on installing the mod to my wrx 2011, ej 255 engine. I was curious if the install video would apply to my car as well.

[@josesantosgallo6014]

I will cash app you 100 bucks for a detailed video on how to remove and installation of the intake manifold. I have seen many videos and yours have been truly amazingly detailed.

[@josesantosgallo6014]

@@akqjtn no worries! And great videos! Hope everything is good!!

[@dorianleclair7390]

Great video man. Very detailed.

[@theSEGAtwistisover9k]

easily the best video on this install thanks ;)

[@Dexter_19]

Very well done video. Good job sir. 👍🏻

[@toneloc4706]

Awesome video, very well explained. Liked it from us in new zealand 🇳🇿

[@ronaldplant6084]

Well done. Very professional.

[@andrewmartinelli4206]

great video very helpful

[@justmattb]

Thanks again for another great video. Though I did the I Build Race Cars version, they’re all pretty much the same. This gave me the confidence to do it myself. Biggest hurdle was finding the 1” crowfoot wrench and then playing around with all the angles to get things tightened down.

[@andrewknutson91]

Putting that barb in with the crowfoot was such a pain in the ass (and neck).

[@brandonjames7292]

Excellent video

[@SirFang21]

Great video, Whats the recommended coolant temp reading on your accessport?

[@MrZbiggles]

great video bud. I would suggest a red rubber tip for your test light / visual probe to make it safer from scratching sensitive areas. and also easier to see. All the extra bolts I personally use various types of anti seize and thread lock. Thread lock is super important if you ever expect anything to stay put or 10 k plus Kilometers. last tip, before removing the filler funnel for your coolant, you can squeeze on the rubber hoses a bit to raise the coolant level before plugging the funnel. so that way, you have no spills. Again, great Video, super clean engine too, Beautiful. I bet she's a lot of fun. Cheers

[@carlosv567]

Very good video. Great Job dude.

[@rangerdanger9672]

Phenomenal video, you've got my sub. Incredibly detailed for a job that every subie owner should do, I'll have to recommend this one for anyone who hasn't done this

[@akqjtn]

Thank you and please do so!

[@dangushue5460]

Nice video - very helpful!

[@dlanuto3rd]

Amazing. I appreciate it!

[@havenotfoundit]

Great video brother 🤘

[@zoeymawhir9268]

Love you videos, you don't skip anything =)

[@paulmarsdensr1095]

A great video brother stay safe

[@MrVoodoo5050]

Bad ass bro… helped me a bunch. Thanks 🙏

[@briantoolive]

Eres un salvaje👍 loved the video, the angles and the explanations were all on point👏👌

[@akqjtn]

Gracias!

[@user-fd7wm4gc9q]

Thanks for the video. I appreciate you making it one little question though did you do all that bubbling with it still on the ramp?

[@christanbottari9607]

Thanks g this vid definitely helped with the diagram 🤙🏼

[@akqjtn]

Awesome, thanks for watching!

[@OscarRamirez-im3sq]

Hoping you see this after 2 years great video and will be following as I do my self but question, while burping system when you turned the car on to get the heat on did you first remove the pinch hose clamp that you put on the 4th cooling mod

[@charlieTesla]

I was gonna do this myself but nah, after watching this I’ll just have a mechanic do it lol. Great video!

[@roboticunclephil]

It's super easy???

[@davidvuong3234]

You have the most in depth and detailed videos.Highly underrated. Too bad I have a Wrx and not an STI 😔😂

[@davidvuong3234]

@@akqjtn oh yea I've watched a lot of your Wrx videos.Keep up the great work 👍

[@Will-hs2um]

Awesome video man! I just got an AOS, Cylinder 4 mod and KoyoRad to do all at the same time over a long weekend. I’ll definitely be using your videos for my install journey. 2 questions though: any reason you didn’t just tighten the plug to the head without the hose? I figure it would be easier to use a socket wrench than a crows foot. Have you made a radiator install video?

[@nismonad88]

Great video. When you burp the system the heater is on but do you put the a/c on too ?

[@havoc777]

Great video

[@Xcelsior.7272]

Awesome man

[@blueberrythedelsol]

Great video, I have a question about the aos….when you installed it, was bleeding the cooling system through the bleeder screw on the Iag aos enough to get the air out of the system after install or did you bleed the system just like you did when installing the 4th cylinder cooling mod ?

[@UnDeAdTaZ10]

BRO! Best Subie YT channel ! Keep It Up brotha Subbed no doubt !

[@TMar129]

Liked and subbed. Very well done video.

[@yennergonzalez6850]

Great viedo!!! Explained very well. New suscriber. Is the same process for my 2.5 Outback 2013? I already had a failure on cylinder 4 that costed me the engine. I changed it for another with 60K miles on it but I don't want it to have the same failure.

[@paper1981]

Good video.

[@Isnax27]

Very digestible instructions thank you! I’m wondering about running the distilled water and draining that before re-adding the coolant. Why didn’t you do it? Is it really necessary? Iv seen videos that recommend it.

[@peeposadboy]

It’s more so to prevent ringland failure, not to prevent knock. Lol. While this MAY help with knock, the original purpose of this mod is to prevent ringland failure because especially on the EJ with unequal length headers, cyl 4 gets very hot and is prone to ringland failure. This mod and either a catch can or AOS can help prevent the dreaded cylinder 4 ringland failure. FA20’s should consider this if you’re doing the Tomei unequal length.

[@joserobles3611]

Attempting to do it on my 2015 sti but only confusion im having is which heater hose to cut,for me the top hose has a insulation not the bottom one, mabe they just mixed them up when getting the car done but I’m just gonna cut the one connecting to the black metal pipe.Love all your videos by the way never really tempted to work on my car until I found your videos super informative and best shots of every step💯👌🏼

[@DonsShed]

Nice video man ☺ you have a new subscriber..... I currently have an MY20 Golf R but I am getting the itch for an STI. Cheers, Don, Perth W.Australia ☺

[@akqjtn]

Thanks and welcome! If you get an STI I think you will get a lot from my channel. Good luck!

[@tsunami5834]

Ima try it rn I’ll let u know how it goes fingers crossed 🤞

[@squealswhenwet735]

Excellent ! The details, man ! You should be teaching at a tech school.

[@ttv.smplmher]

Great walkthrough, wonder if this violates warranty

[@ozzysgarage]

Great video!

[@akqjtn]

Thank you!