I purchased a Full-race turbo kit for my B-series build back in 2004-2005 time frame. Back then they had a tiny office space in Mesa, Az and a small shop in Tempe I think. Anyway, back then I was looking for a kit that I knew was bullet proof, I got lucky to purchase a kit from a company (Full-race) that turned out to be one of the best and most reliable turbo kits available then and now. Seriously, Full-Race was just a bunch of cool dudes, I messed up and installed my new injectors with out lubing the o-rings, they obviously leaked. One of the full-race guys hooked me up with a new set of o-rings, I’ll never forget that, I think his name was Jose, anyway thanx Jose and Full-Race, the coolest and most high-quality companies in the mod industry that Ive ever had to deal with.
I wanna have Mike and Dr. Michio Maku in a subaru build segment, first they both explain the build set up then how tuning works and then track the heck out of a Subie.
With a little bit of adapting work you can mount and wire two of those bigger pumps in parallel, so if anything goes wrong you can switch from your dashboard. As always your contents are extremely detailed as clear to understand, the amount of infos and competence here is very high. Merry Christmas!
This is the knowledge and level of mechanical engineering that got me into cars. Everything here has a purpose and is designed to do its job and do it well. Function over form. Can I go work for you guys. I just want the knowledge 😆
Oh wow! You can hear how stout that tubing is tapping on it! No cracks!! That turbo is wild too! I bet the aluminum center housing is good for cooling. Seems like it'll put tons of area under the curve!
Full-Race is no longer doing these unfortunately (and apparently not fabricating anything anymore). I wanted to buy it from them, but had to go with ETS's kit, which only does External wastegate. Pretty stoked about it! Thanks for the video, always very informative.
@@motoiq for sure, that’s what I’m running. I do wish they were able to drop the turbo down a bit lower to shorten the up pipe a bit. But for the sake of packaging and ease of installation I can see why it is the way it is.
Smiles throughout every explanation is all any teacher needs to get through to their students..I don't own a Subaru but watched these videos and makes me feel like I own one due to his smile. Watched his KA24DE video and it's a lot to take in but can't help but learn more due to his smiles. His enjoyment makes me enjoy these videos regardless of legnth.
This is really interesting, a while ago I decided my -05 wrx needed some more top end. But I did not want to lose response. After a while I found an ad in my local subaru group for a kinugawa twinscroll turbo, with twin scroll manifold and up pipe. Then I went to a track day and wrecked my gearbox. But this video inspires me to pursue my tuning plans, which are way more modest, I’m not sure I want to push more than 350hp on my stock ej205, maybe not even that much. I do more autocross than track days, so response is more important than top end.
Another less traveled option is a compound turbo setup. Not too many people go this route due to additional cost and complexity. Very popular in the diesel world.
Hey Mike, great video as always. I've messaged a few tuners in regards to the Borg Warner turbos and they just do not seem to like that internal gated wastegate. They recommend blocking it off and going with an EWG. I mentioned there must be some type of a learning curve to this setup been there just like no go with precision. When you do the video on tuning, please focus on tuning the BW wastegate to see if it is truly as responsive as a normal EWG turbo setup.
@@motoiq when you guys are at the tuning stage can you bring this up in the video? No one talks about how to properly manage with tuning that BW 🌪️ wastegate
This upload was right on time Mike. I'm currently in the beginning process of building a 450whp STI, I just bought the IAG stg2.5 closed deck short block. Could I replicate everything you have here for quick spool up? Been following you for YEARS since the old SER days and still have my 02' Spec V. This video was a BIG help...thanks Mike!
Hey Mike! I'm new to Subaru and have been living these videos!! Can't wait to go through them all. What you're off caliper's would you recommend? Metal wise
@@motoiq is 307whp the most you can make while staying CARB-legal? I only saw that the blog is a 3part series. Is there no turbo upgrade? I saw that COBB has many NextGen CARB-legal parts, do they violate state regulations after being tuned?
My biggest convern with these twin scroll setups, as it appears to me, is that the volutes look like theyre 2 different volumes. One being bigger than the other i believe would create different amounts of back pressure per pair of cylinders. I cant see that not being hard on an engine.
I have the Full-race turbo kit with the EFR 7163 twin scroll. I don't recommend the EFR turbos at all. They don't handle high oil pressure very well and start to smoke. You won't find anyone who works on EFR turbos to rebuild them because they are different than any turbo out there so your stuck with a turbo that nobody will rebuild or even want to look at. At the very least run a oil pressure regulator (OPR-40) from Turbosmart if your going to run high rpms to protect the turbo from getting too much oil pressure.
took me 3 times to complete viewing the video as i kept REMing bro, Siri have better and more exciting tone to listen to. However, the content was excellent, highly educational and very addictive. im gonna binge watch the channel with a pot of coffee. :)
Thanks for all the information. I run the 7163 on a FA20, not many understand the notion of response. Will you go over cylinder heads in the future? Full made a good kit but quit on the FA20, I'm glad to hear they still fab for other Subaru platforms
Interesting that it's e85, and 8.5 compression ratio to aim for 450whp. I'd assume with that compression you'd cram a lot more boost in. A higher compression would give a better response, which is a focus of this build, no? I'd like to know please and thank you.
I love the whole twin scroll/ tri y concept for ej motors 🤩👏🏻 Has anyone done a twin scroll on the new GR Corolla 3 cylinder? 🤔 Would it even work on a 3 cylinder? 🤷🏻♂️
I have a 1983 Subaru 4 stroke carburetor,do y’all work on them and make it better. Running good and strong,it’s all ways run good don’t use mush fuel I always like it now it just seats outside there. Well let me know and will see ya next time see ya bye.
I'm with you, even ahead of you in this. But still not sold on this. If you have a set of pipes on a flat 4. You can setup tube length to do the same work. I don't se how dividing the exust side and having a bi exit makes extra power. I love your explanation but I don't see th benifit still. I watched this over and over. It's a great idea. But I don't see this lasting or staying.
It's not a matter of your opinion, the twin scroll concept is a long proven fact and has been used to speed turbo spool time for a generation. It is really common in diesel applications due to the low energy content of diesel exhaust.
what an amazing channel. Literally i'm on my 4th video today and i'm hooked. I do have question, i'm thinking of purchasing a brz/frs and eventually would want to either turbo charge or supercharge. Could ya give any input on which option would be better for the FA20?
I sorta feel that turbocharging can easily give you the power to nuke the tranny and the engines bottom end. I like the Edebrock supercharger kit. The trick is don't get greedy. Even built, the FA20 can't handle much more than low 400's for very long. The transmission can't even take that.
Lag isnt so bad on the street if its predictable. it can get expensive to fuel normal operations if youre in boost all the time, but it is great for a race car. Another good thing about that bigger turbine housing is that it can help control EGTs a little.
All im saying is it can be sized bigger so that youre not on boost 100% of the time, which is a good reason to have a bigger turbo. I wouldnt want boost delay. Ill see myself out. Racecars only around here.
@@you_can_fuck_your_own_ass_69 got ya. I know a lot of guys will tune it out by the time it gets to the stage, but I could see it being more of a consideration for the flat layout. Im sure there is only so much a person can do do with the compression ratio and engine speed safely to get things spooled up.
if only there was some way to delay ignition timing with drive by wire. We could create some anti turbo lag system that could work while the car is rolling in race conditions. Some kind of selectable, automatic rolling anti turbo lag system. It would have to be easily programmable via ecu. i hope one day lag is easily addressed with some sort of technology like this. one day.
Saluditos motoiq bendiciones desde Frankfort indiana una pregunta yo tengo un Subaru impreza wrx2005 no turbo que puedo cambiar a mi carro toda la pipa tiene alguna fhotos 🦕🦕🦕🤗🤗
@@motoiq There seems to be decent support for the ez30 engine, but very little for the ez36. There seems to be a consensus that the ez36 is not a good engine for a high horsepower build. I'm more interested in moderate power, it is my daily driver after all. Raptor Superchargers makes a bolt on kit, but I would like to improve the longevity of the engine.
That might've been regarding the 2.5L motors. For whatever reason, twin scroll seems to provide a decent improvement on smaller displacement EJ motors (EJ20s & strokers between 2.1-2.3L) but not so much on the EJ25s
I’m a bit shocked your running all those high quality fuel system parts, then running DW Injectors. Not a lot of people have much good to say about them.
They are based on the Bosch EV14, just like injector Dynamics and others, top notch stuff. A long time ago they did stuff like drill out stock injectors when they were not many alternatives for some cars but that was around 15 years ago. Now their stuff is top notch, ask reputable tuners and they have no issues.
@@motoiq admittedly, it’s been a while since I’ve used them. But it would still seem they don’t have the best reputation. Perhaps all that’s needed is a few more videos from places like yourself to help change that. But it’s going to take a lot to pry my Injector Dynamics out of my hand. Ha
@@JordieG8 I used DW injectors on my supercharged 5.0 on my tuners recommendation and they worked great. I also had their 400lph pump and had no problems at all. I was making 740rwhp and was basically maxed on what 93 octane could do (no E85 where I live).
my 2000 subaru b4 legacy just a 2.0 Ithe previous owner did everything and a manual swap it's my first car I don't like how he has messed up some wires somehow that thing starts it's not driving because of the breaks I'm probably not going to turbo it idk if it's actually at 489.712 on the ODO it needs a few things b4 it gets a turbo if and probably just one
As for power production, its hard to quantify, but we did find an improvement in spool time with a turbine blanket in another test so presumably reducing heat loss will help.
tuned on E85, you ever run into repeatedly killing your widebands? did it come down to wideband type, positioning, or perhaps coolant temp enrichment/ tune related? Thanks for your time!
That's weird E85 is easy on widebands. Are you running any fuel or zinc based oil additives? Using high temp silicone upstream of the sensor? Where is the wideband located? Sometimes moisture can do it.
@@motoiq Fuels - Wawa e85 & sunoco 93 (various blends) no additives Oil - IAG 2 stage 2 tuff recommended break-in oil no additives... I don't suspect there to be any silicone, but i'll need to find out where our tuner put wideband to answer that more accurately. was kinda hoping to learn through someone else's experience who maybe took a similar path of IAG stage 2 tuff ej257 flex fuel kit on a speed density tune w/ equal length headers... thanks man
One thing is that you should always mount the sensor horizontally instead of vertically. This way solid liquid water accumulating in the exhaust from E85 under cold start is less likely to be blown on the sensor. The sensor heater is getting pretty hot and some solid water hitting it can thermal shock it and take it out.
@@motoiq often not the case... great hardware laying on the table though. Once installed and get to tuned, many realize that you have sacrifice something to gain something.
I really wanted one, but they're probably the most over priced car on the used market for enthusiasts.. People STILL want 10k+ for their basic ass WRX that barely makes over 200 hp and who's engine is on the way out anyway... Let alone what the STIs cost. Who is out there buying these things?
@@SoulEraser000 JDM STI with a EJ207 if you want reliability. 140k km on mine zero issues. These engines are very particular and will punish bad owners.
@@findmeifyoucan Not even talking about new cars here, bud... People want premium prices on their 20 year old WRX was the point of my original comment.
