Cooling Mod Experiment

[@wadebeisner3725]

Damn bro figured out the secret ingredient for a good build. Much appreciated for this product’s existence gonna be many Subaru’s saved by this 💪🏼

[@tjbugeye]

Damn Dom. Looks like your on to something. 5 to 10+ deg makes a big difference. Good work.

[@GetaDomTune]

tjbugeye people will still argue. But I've sold 300 so far. At least those guys know their money wasn't wasted

[@tjbugeye]

Dominic Acia Not sure why they would argue. You just proved it works. And we know heat is a killer.

[@ChristopherNaresh]

Yup yup that what up DOM hold one aside for me please and thank you .... DOM the R&D master

[@flatmotion1]

Honestly makes you think why subaru themselves weren't able to come up with something simple yet so effective by now. I don't get it. Ordering mine next week for sure. Good job on the mod. I appreciate when people always try to improve things that are already there. Keep it up!

[@t.regnerus301]

Just like after 10 yrs or so they finally address the ringland/weak piston issue in the 2019 STI. The WRX and STI are boutique vehicles for Subaru and not a whole lot of money gets thrown at a low volume seller, unless Subaru has a superior engine to replace the EJ series they're keeping under tight wraps. I'm not holding my breath though.

[@flatmotion1]

Ted R. I want those pistons :(

[@GetaDomTune]

Niklas Budrovcan they're still cast Pistons

[@steveman09]

The 19 STI EJ25 doesn't have a ringland failure fix, they are still cast and not forged.

[@flatmotion1]

well dang.

[@mike63ful]

Just bought one, thankyou!

[@IscaSullo]

Wow! What is super interesting(to me, anyway), is that you are measuring the external surface area of the head itself. I am guessing the actual internal coolant temperature differences would have to be even greater to cause the external surface temperature of the head to fluctuate that much? No big built motors on our Bugeye and Legacy GT, but I'm looking forward to picking these up anyway, as it surely cannot hurt.

[@GetaDomTune]

IscaSullo I agree. It was also a corner of the head away from the flow path

[@steveman09]

This is very interesting Dominic, I would love to find a problem child car thats prone to knocking on cyl #2/4 and see a before and after this mod result. Nice job on this though I'm sure you have a ton of time into the research and development, I might have to look into putting this on my legacy.

[@GetaDomTune]

steveman09 more time than I want to admit or tally up. It's measured in tens of years I'm working on another experiment where I torture test a car with a temp sensor embedded in the head with and without the cooling flow.

[@d100dodgepw]

Any update on the torture test?

[@bmoore8853]

@@GetaDomTune +1 for update on torture test, would love to see this in action. Also would love to see an already tuned car being re-tuned to see if the car is able to be safely tuned more aggressively, which would be supportive of your product claims. I bought two last night, I'm no skeptic, I'd just like to see more information available on this! I LOVE every one of your videos, inspirational and educational.

[@thebagdersarse5824]

@@GetaDomTune Would love to see the results from the torture testing.

[@GetaDomTune]

@@thebagdersarse5824 never did it. Results were too obvious during normal tuning

[@nickn4862]

Got one in my 06 sti,car is stock and runs better than ever with Doms mod.Very easy install.

[@Cobradaddy]

I'm just learning about this mod so I had a question for you. In a video where someone was comparing your mod with another company's mod, they were praising yours and not the others. In the comment section the other company chimmined in with a very interesting point that I'd like to know more about. They said that if the hose mod was too big (theirs was smaller in diameter) that you would be taking too much coolant away from the other cylinders, and basically just moving the problem. Do you have any experience to where the other cylinders were to get hotter because you're moving more coolant to another area from the others?

[@Dragunov302]

What company was this?

[@jsquared1013]

In his other videos he talks about putting a lot of time and R&D into getting the internal sizing of the port correct so it would balance the heads and not have one flowing much more than the other. A lot of the cheap/generic knockoffs have a regular port, which flows too much.

[@WangAnTa]

Would installing this mod require a tune?

[@GetaDomTune]

Andrew Wang no sir.

[@BP-fx3qc]

That engine sounds horrible, so much piston slap. Is that a stock or built bottom end?

[@GetaDomTune]

Stock. Do you spend much time under running Subarus? They're all loud.

[@MrSubaru1387]

@@GetaDomTune not like that they aren't..

[@GetaDomTune]

As I think I said in the video, it's a poorly built bottom end. If I didn't say it, then I'm sorry, but I thought it was obvious.

[@victorcano3899]

Any updates on the experiment? Thanks for all your work!

[@GetaDomTune]

3000 kits sold. Lots of people reporting better balanced EGTs, reduced knock, cooler overall temps

[@Brandondrumkc]

I must have missed something. With the clamp on running coolant "normally" it was at roughly 188ish, with the clamp open running the coolant through the new modded route it was roughly 186\7ish. That doesn't seem like much of a change.

[@GVlVG]

I saw 190’s and 185’s, 5 degrees difference at idle on one cylinder on the exterior with no air flowing over the motor or any stress of any kind, the numbers will only be more drastic the higher it goes in revs and drive time. For 80$ why not get it anyways? It’s not going to make anything worse lmao

[@x2Berettas]

Would you recommend your mod on a currently stock 17’ STi with 8500 miles on it about to go stage 2 with a full catted TBE with a divorced downpipe, an AOS, and a protune?

[@nightwalker1h773]

I have a 2017 with a catless dp and intake.. highly considering this just cause piston 4 Is in the depths of hell with heat

[@x2Berettas]

Night walkeR1H currently? You measured and it’s an outlier?

[@nightwalker1h773]

@@x2Berettas I don't understand your question but no I have not installed this yet

[@x2Berettas]

Night walkeR1H I was asking if you had your exterior engine temps measured and if cyl 4 was significantly hotter with your mod setup

[@nightwalker1h773]

@@x2Berettas i have not but i am assuming it would be

[@grandtheftauto1233]

Hey Dom! I assume your mod is just as effective on 2.0L and 2.5L, is it recommended for both?

[@GetaDomTune]

Yes. 2L don't need it as much because the cooling jackets aren't as blocked as the 2.5L on the LH side, but there is still a benefit

[@grandtheftauto1233]

@@GetaDomTune thanks dom I’m gonna order one soon and put it in when I do the timing and water pump service coming up. Thanks dude you’re awesome

[@ejacob3]

@@grandtheftauto1233 FA's are superior in cooling, not needed. save your money.

[@grandtheftauto1233]

@@ejacob3 already saving money by having a Bugeye - but good advice for further readers. This is for the EJ motors

[@DiamondDetailingBuzz]

Noob to subaru's would this be beneficial on an 03 wrx

[@GetaDomTune]

Every turbo EJ. But the 2.5 suffers the most due to the larger bore

[@petrmiskerik]

I am scared of this sound so damn much... 🙄

[@danielleblanc8302]

Was this engine suffering from bearing/piston ring failure? The oem hypereuthectic pistons really don't slap all that much. I own a 140,000km jdm EJ207 V7 which has the forged pistons which are more susceptible to expansion/contraction. Well, even up here in Canadian winter, I would be very worried if my car sounded like this one for longer than 60 seconds after initial cold start. I'm 99% sure this engine has a ruined bearing or two, or something else mechanically wrong with the rotating assembly.

[@GetaDomTune]

Not that it matters for the purpose of the video, but it wasn't factory pistons. It was just a poorly built shortblock.

[@AntilleanConfederation]

where does the coolant go? Where does it flow to. Otherwise is pointless.

[@GetaDomTune]

It goes to the water pump

[@AntilleanConfederation]

@@GetaDomTune if it goes to the water pump. Isn’t there pressure behind the nut when is closed? I would love to see a internal diagram of the water being routed and the full cycle.

[@GetaDomTune]

@@AntilleanConfederation what? There are diagrams available online. This works. It's been proven thousands of times and copied by everyone. You don't need to waste your time. You're not going to figure something out that hasn't been thought of already

[@AntilleanConfederation]

@@GetaDomTune if that is true. And it probably is, why hasn’t Subaru themselves offered a recall solution. By adding this wouldn’t they solve the problem. My car is still under warranty.

[@GetaDomTune]

@@AntilleanConfederation couple things one recalls are only for safety things. This isn't a safety issue. Second it's not a problem for them. It's a problem for those of us that modify our cars and want more power. There's also a reason why the EJ was never offered in a higher horsepower configuration.

[@ampersandmcvinegar5681]

#getaDomTune

[@NovoGold]

2 to 5 deg c pointless

[@dominicanpapi81]

I made my own kit for 20bucks while this dude charges 100 😅

[@GetaDomTune]

uh huh. and what size orifice did you use? Spend a lot of time testing out the correct size using a bunch of RTDs and a dyno did you? STFU.