I never realised you were still on stock ECU, my lawd you have so much potential power all across the rpm range to be gained!

Love this series. Toyota squeezed quite a bit out of the 4AGE with the 20V blacktop: 5 valves per cylinder, variable cam timing, ITB's, high compression ratio, and lightened internals. An aftermarket ECU and an old fashioned port and polish will do you the most good; it is a mass market engine. Being able to tune the engine will be the best way to maximize power. Leave the bottom end alone. Need another t-shirt.

That result seriously shocked me 😮 was thinking of buying the same header for my AE101 since I have an OEM TRD catback exhaust and stock BT

From your graph, afr is lean around 4~5k rpm correspond to the torque curve dip, and richer the rest of the way compares to stock header. This should be just timing tuning and you should see better result, not sure if oem ecu can be tuned. If we are talking about going standalone, might as well upgrade cam+tune. After tuning, if injector cycle is reaching peak before it can fully saturate this 4-1 header, only then u consider going for uprate injector+pump. Should be at least 4 video worth of content there ;) Edit: LOL mixed red from blue, red is stock after rewatch, sorry. So it's actually richer around 4~5k, lean all the way back. So, if that's due to injector fuel cycle already reaching peak, perhaps injector upgrade + pump + tune time

Super cool to see you do tests on each setup. Awesome to see unique builds like this and can’t wait to see what motor mods are next!

Great vid & props for following up with investigation and diagnosis. I never get tired of that sound...

The sounds of this engine are sick! Always a pleasure watching your videos, keep it up!

Love your build man I’ve said it before and I’ll say every time I watch your videos it’s coming along amazing!

Am I the only one that comes back again and again to watch all his videos just to hear this car? ❤️🥺

I never knew how much power you can lose with a minimally broken exhaust manifold gasket. My FX got a custom made now. Buzzes like a butterfly and takes off like a hawk. Thank you for your channel. I've gotta get me one of those plates. Greetings to Leopold.

I love this proyect so much. Excelent channel, video, editing, explaning, and CAR!!

Awesome video as always! Love this little Corolla!

Big fan of your build since you started! Your video editing has only gotten better over time!

Well I think it's time to move on to an aftermarket ECU friend !!

Love listening to this car sounds amazing

The cleanest (and best sounding) FX16 ever. I liked the little RPM gauge in the corner when you were dynoing the car, it's little edits like that which make your videos so good to watch.

I love the sound of this engine! And very informative. Subscribed! :)

Just stumbled on this channel and I'm so glad I did.

Love your build! I used to have an FX16 GTS, 85 MR2, and an 86 Corolla GTS. I ultimately did the HKS stroker kit with 272 cams and Weber carbs. Basically it was a Formula Atlantic motor before fuel injection. It was a great car!! I got older and sold off the cars. 20 years later I still regret that decision. Good luck!!

thanks man... hope i can use your video for guidance in the future.. still finding knowledge on my car.. what should and shouldnt do.. great video man keep it up..

best part is 5:42 "meow"

This build is so sick!

Still a dream car of mine! Such a rad car

Nice car Nice cat Good methodology Nice camera work Nice music Subbed

Intresting comparison, great content. Stay safe!

Amazing experience, big thanks

Awesome video! Loved the information

Videos with Cat automatically earn a instant subscribe.

Cams, springs, retainers, ported head, ecu and fueling and I think that’s most of what you need minus a full engine block rebuild (7A-GE)

Thanks for the vids, learning from it all and hoping to apply it to my 4AGE silvertop! :D

Ooh ooh ohh MR2 guy here hell yeah! First dude here hell yeah!

Definitely ecu, It'll let you optimize what you got And will leave you ready for more serious engine mods in the future ✌️

Love the random cat clips ❤️❤️❤️i am melting

Beautiful sounds. Now upgrade that ECU!!! I’m subscribed

i don’t even have an fx16 but i love watching these videos anyways

Keep up the great videos

Very fond memories of this little screamer.

Great video. I got an 87 fx. I'm working on runs great body is a bit ruff but fixable. I love seeing some one else building one. Most people where I'm at thinks there ugly. Lol I just think there fun to drive. Cant wait to see where you take this build. Stay up ride low 🙏👍💯

on my setup i ran 2 stock headers basically using all the stock 20v piping to make a rwd header for the ae86 copled toa megan racing exhaust. worked great! nothing wrong with the stock piping. made 159hp and 161 on 2 different dynos. cool to see you do all back to back setup testing

i think time for ecu so u can dyno test every upgrade.. great video man

Such a cool car man

Pretty interesting to see, because all other tests I've seen has shown that large performance exhausts always improve horsepower and torque.

good video man

It sounds so good

Such a cool car. My dad had red UK GTI version in the early 90s.

My two favorite exhaust theory videos are No More Exhaust Myths on The Drive channel and The Engineering Behind Naturally Aspirated Horsepower by the Obsessed Garage channel. Both of those videos will give you a basic understanding of everything going on with exhaust tuning. Also, an easily tunable ECU will certainly make a big difference for your situation as well and let you tune for different velocity stacks.

Very informative video!

Love your videos so far. Would have liked to see plots of the afr before and after the header/exhaust as that would give an indication of how much change in airflow and what gains you might see with an ecu tune.

Just finished for today my mr2 restoration and looking an exhaust....best timing 😂♥️damn your that 4age sound good

Always nice to hear those ITB's. One of the best sounding engines I know of.

Fantastic stock. It will serve hundred thousand miles no problem 👌

I mean, you can put an ecu to maximize the performance of the stock engine. If it seems to struggle, do the cams as well. Nice to point out that flashy doesn't mean more performance. Great video once again!

One fun project! Next up will be cams to make use of the exhaust system.

Super good vids!

my god i am in love with this car

Whats up man.. I drive a blacktop 20v aswell and recently changed from the stock computer box to an aftermarket ECU... And i must say the power difference is much better with the 4 into 1 header on the aftermarket ECU.. As your tuner will be able to adjust the air and fuel ratio accordingly. TODA cams with adjustable vernier cam pullies will be the best next mod for the 20v.. If you can do the valve springs aswell will be fantastic to ensure the cams has good support from the bottom. All the best bud keep the content coming.!!

The car the engine is all nice... But that beauty of an angel cat its adorable ❤❤

I have the same car stripped out as a race car. It has the Black top engine too. We built the engine up a bit stronger with 4agze rods and race bearings in the bottom end. With standard exhaust manifold and ECU. I was only getting 105hp at the front wheels (rods etc). Did a similar exhaust manifold mod and aftermarket ECU. With a good tune I got to 138hp at the front wheels. Still using standard cams. Go for an ECU and you will never regret it.

Nice shirt! It's good to see a fan of TerminalMontage (likely also Melee) and the Corolla FX16 GT-S

Absolutely ecu! Get some sequencial injection and spark and your power will absolutely increase, you'll have much more room to improve with a standalone ecu

TRD headgasket and an adjustable exhaust cam gear to dial the exhaust cam. Standalone ecu will be best to get the best out every mod, however it's tuner dependent, see which standalone ecu your tuner is comfortable tuning and go with that. Excellent videos, keep up the great work 👌

Have to say this test shocked me. Keep up the methodical mentality, I love it. ECU then 'stage 2/3' camshafts, valve springs and retainers to suit then put your high flow exhaust back on. May need larger injectors and fuel pump to take full advantage. Porting/ignition upgrade will have diminishing returns for the money especially in it's current stage IMO. A bonnet scoop with sealed ducting to the ITBs would give a noticeable gain driving it hard on the street, I don't think you'd see any dyno measurable gain but for a road going 'touge' racer I'm sure you'd feel the edge

You need an adjustable ecu to change the ign and fuel timing to optimise the header and catback addition. What size diameter is the header collector and catback system?

Subbed after the trumpet video. I really want to put some ITBs on my 7afe. Just cause haha.

A wide-body FX16 would look good and could allow for wider track width, which would improve the handling of the car on the touge , maybe even some fender flares would be good .

Definitely an aftermarket ecu. Use a 0.8mm Trd head gasket. 272 degree inlet cam with 9.1mm lift 280 degree exhaust cam with 9.1mm lift. When doing these mods make sure you send the head and cams to an engineer so that they can lengthened the valves and setup the clearances. While it is at the engineer maybe get them to port and flow the head. Good luck and keep the videos coming.

I would see what the AFR is with the new exhaust. If the flow is better, it can get really lean, thats why it wont make any power. The manifold on the other hand, maybe try to get a aftermarket 4-2-1 manifold, this kind of design has always been superior in the vdub world.

Great stuff!That cat is pretty cute too hahah

yes yes brilliant!

Damn the open header sounds fucking killer! Plus id definitely say go for some crazy cams for some crazy hp and tq gains.

Toda 272 9.2 lift inlet and exhaust camshaft Supertec valve springs and retainers Haltech Elite 550 ECU With that same 4-1 header Remove catalytic converter Eagerly waiting for what's next.

I'm going to echo what other people have said, an ECU is going to let you optimize the setup, especially since you already have the engine breathing freer with the ITBs and header setup. The next jump could be cams and fuel system. You could go for a less aggressive setup to keep it streetable and friendly to just drive around but give you the performance gains you want. Always love your uploads, and the cat is super cute!

Buh I love the stock 4age 🥺

First you need a standalone engine management, then you need to consider increasing compression which will increase torque throughout the rev range. The larger the camshafts that you consider, the more compression you should run. Also, you can consider lengthening the intake trumpets for more midrange torque. Taking full advantage of any of these things will require a standalone EMS and a good tune. Good content. Most people don't show this kind of information.

20v owner here, I think an ecu should be the first because it opens the door to many mods capable of huge things!

Dude i love your content! its super informative. Id say go with a megasquirt ecu! then anything you do to your car afterward can be optimized with tuning! Also, did you do the last dyno test with the filter?

I almost ordered this header, guess I'll wait

Dude, you've got some taste.

Nice Corolla

I dont know these engines very well but based on how good certain stock stuff is, Bowl work on the head, and a tune! Maybe cams?

Makes me miss my old FXGT

Exhaust diameter and ' free flow ' are not important. A to big diameter tends to slow down gas speed. It's all about exhaust gas speed and scavenging. Good luck! Btw I am amazed the engine revs so high on stock ECU and cams. What an epic engine!

fun fact. i remember reading the trd bible theres a ae101 silvertop group a engine data . trd remain using the stock oem upper section (4-2) of header. and tinker with the lower section (2-to-1) and the rest of exhasut. there might be some reason for some of the old school tuner like toms using the oem upper section and revised the lower section also

I love the cat!

here in SA we call it the chisel shape we love it

I know turbo cars are a bit different but the best thing for my Impreza was getting a tune done to get as much power out of the stock components, it gained a fair amount of hp and torque though the range with very minor changes. So I would definitely look into getting the ECU tuned by a professional and or installing a stand alone unit to have even more control of the engine.

Good vid. I had a similar result when i got a custom exhaust made for my aw11 mr2. I got good bottom end but top end went flat. Sometimes the stock parts are designed for best performance. Which isnt surprising really. Its similar to lancer evos. They are highly designed. Even though they might sound better, just putting on a aftermarket exhaust can decrease performance.

Bolt on mods: Better fuel pump,Larger fuel rail,Injectors Ecu to correct every changes made Intake yeah good enough Exhaust try do a scavenging test with that header, maybe is just a bad scavenging (Make a video too) More extreme mods: Everything above and Top:Cams, Valves&Springs, Port&Polish Bottom:Full engine balancing, Oil baffle plate with windage & Larger bore and compression Not a 4age expert but for a N/A Responsive build I'll go with this set up

thx for the video :)

Rods, piston, camshaft, valve springs, adjustable cam gears, lightened crankshaft pulley and an aftermarket ecu...should do da trick!

I had a friend with a blacktop corolla E11 though. But he had cams in it, plus the same mods as you have, it was running so good! The limiter was moved to 10.000 instead. But that thing was Wild! If it was me i Would do the mods before ecu, since you Would need to re tune it anyway. Cams, and porting the head!

You need to put Leo in the car for goodluck on the dyno. He's a cutie

Aftermarket ECU for sure, either the Haltech Elite 750 or Link G4+ Monsoon and go COP. That would give you the best foundation to build off of since everything to be a true power setter would be restricted or not optimized by the factory ECU and ignition system.

Awesome video, go for cams, inyectors and a stand alone ecu

depending on how far you want to go, you should definitely do cams and an ecu. After that i would chuck in some high compression pistons and possibly some bigger injectors. also with the ecu you could upgrade to coil on plug which would help free up some more power and make it more responsive.

In regards to the ole rolla’ id say probably some mild cams, maybe some bigger injectors and a higher flow fuel pump would do it well. Maybe then also an aftermarket ECU and a good tune. Nothing crazy but still within the realm of “reliability”

ECU definitely needs to be done. I’ll bet it makes a decent increase in power once it’s tuned for that extra air. I ran into the same thing with my 2wd pickup with a 22re. CAI, LCE ported and polished head with 1mm larger stainless valves, LCE Long tube header and a 2 1/4 inch full exhaust. I lost a ton of torque, and maybe some hp. This is unconfirmed with a dyno but I feel it. A dude with the same setup as me with a tune made 135 whp. 22re normally makes like 95 whp.

Cams and a standalone are the next steps, ideally at once so you can tune with everything installed in one go

Notification was up for 15s boi. Been a while mate nice to see the car still up and running 3:52 car sound change from the exhaust or its just the different mic position that makes it different...?

If fitting race cams you will need more compression and better valve springs. I have a 4AGE20V BT in a Locost Clubman race car. Very interested in your journey!! Good luck and keep safe.