Part 2: GR Yaris Power Stages Stage 3, 4 and 5

Part 2, following the previous Stage 1 and Stage 2 video, today we dig deeper in the BIG POWER Stages for our GR Yaris! A very detailed explanation of which parts are best at every power level, as they are mostly not the same, will help you plan for current and future tuning, up to crazy power levels!
DETAILED PARTS SUGGESTED FOR EACH POWER STAGE
STAGE 3 - 350bhp
 Stock Turbo
 70mm full exhaust
 Kelford Cams “EZP” profile
 Kelford Springs and Retainers
 Syvecs or MoTec ECU - EcuTek remap
 Intercooler with charge pipes (C-Tec Performance)
 Catch Can (HEL Performance)
 Organic Clutch kit with Single Mass Flywheel (Xtreme Clutches)
 Longitudinal Gearbox/Engine Reinforced Mount
 Oil Radiator (HEL Performance)
OPTIONAL
 Forged Pistons and Conrods (highly recommended)
 Uprated head bolts and gasket (LAM Speed)
 52mm machined OEM throttle body (by Scara73)
 Shifter cables Aluminium Bushings (placed on gearbox lever connections)
 Cut Plastic in the two lateral slots next to Toyota emblem, front bumper
 Heat Wrap, insulate, UP-Pipe from intercooler to throttle body
 Lithium Battery: Deadweight Industries Touge 500 or Equivalent
 Front and Rear Strut Bars
 Upgrade Brake Pads and Lines (Hel Performance)
 Increase brake cooling (Import Racing.de)
STAGE 4 - 400bhp Hybrid Turbo
 Hybrid Turbo
 Forged Pistons and Conrods
 Uprated head bolts and gasket (LAM Speed)
 Uprated sodium exhaust valves (LAM Speed)
 76mm (3 inch) full exhaust
 Kelford Cams “A” Profile
 Kelford Springs and Retainers
 Syvecs or MoTec ECU - EcuTek remap
 Syvecs rear differential TCU
 50mm (2 inch) inlet and outlet Intercooler with charge pipes (C-Tec Performance)
 Catch Can (HEL Performance)
 Organic or Sintered Clutch kit with Single Mass Flywheel (Xtreme Clutches or others)
 Longitudinal Gearbox/Engine Reinforced Mount
 Powerflex Black inserts in Gearbox and Engine upper mounts
 Oil Radiator (HEL Performance)
OPTIONAL
 Fuel injectors and supporting pump, if needed (keep your injectors clean!!)
 52mm machined OEM throttle body (by Scara73) - Or 54mm DBW TB if running top ECU
 Intake manifold (LAM Speed, Weldspeed, Scara73)
 Shifter cables Aluminium Bushings (placed on gearbox lever connections)
 Cut Plastic in the two lateral slots next to Toyota emblem, front bumper
 Heat Wrap, insulate, UP-Pipe from intercooler to throttle body
 Lithium Battery (Deadweight Industries Touge 500) or Equivalent
 Front and Rear Strut Bars
 Upgrade Brake Pads and Lines (Hel Performance)
 Upgrade Frond Rotors to floating, motorsport grade
 Increase brake cooling (Import Racing.de)
STAGE 5 - 350-600bhp Full Frame Turbo
 Full Frame Turbo Kit, possibly tubular manifold with equal length headers
 Forged Pistons and Conrods
 Uprated head bolts and gasket (LAM Speed)
 Uprated sodium exhaust valves (LAM Speed)
 76mm (3 inch) full exhaust (80mm if planning over 500bhp power target)
 Kelford Cams “A” or “B” Profile, depending on power target
 Kelford Springs and Retainers
 Syvecs or MoTec ECU
 Syvecs rear differential TCU
 Intake manifold (LAM Speed, Weldspeed, Scara73)
 54mm DBW TB (Throttle Body)
 Fuel injectors and supporting pump
 50mm (2 inch) inlet and outlet Intercooler with charge pipes (C-Tec Performance)
 Catch Can (HEL Performance)
 Sintered Clutch kit with Single Mass Flywheel (Xtreme Clutches or others)
 Longitudinal Gearbox/Engine Reinforced Mount
 Powerflex Black inserts in Gearbox and Engine upper mounts
 Oil Radiator (HEL Performance)
OPTIONAL
 Sequential Gearbox (X-Shift)
 Shifter cables Aluminium Bushings (placed on gearbox lever connections)
 Cut Plastic in the two lateral slots next to Toyota emblem, front bumper
 Heat Wrap, insulate, UP-Pipe from intercooler to throttle body
 Lithium Battery (Deadweight Industries Touge 500) or Equivalent
 Front and Rear Strut Bars
 Full Upgraded Brake kit, front and rear, with motorsport calipers and discs
 Increase brake cooling (Import Racing.de)
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_____________________________________________________________
#ajclubsport #adrianojamespiras #adrianopiras #toyotagryaris #gryaris #grfour #yarisgr #projectcar #gryairsupgrades #gryarismodifications #gryairs2024 #syvecs #motec #importracing #stage3 #turbokit

[@Sprintcup1]

Another great video Adriano, loving the info for this car with no BS, making it hard for me not to mod 😅 looking for the next update ,
channel is growing 👍
Cheers Russ...

[@AJClubsport]

Thankyou Ross, most appreciated, it’s a lot of work form me!

[@Kelford-Cams]

That is a really good run down sir! Subscribed 👍

[@AJClubsport]

Thanks for the sub!

[@AJClubsport]

Any time for cooperation Kelford!

[@gaycha6589]

What a great and well researched, knowledgeable video. Great information. Mile gratzie!

[@AJClubsport]

Thankyou mate!! Most obliged

[@TheOriginal99]

Hey AJ, great video, congrats. Love the in depth analysis. I'm researching for myself in that kind of detail, too and am quite on the same page with you. But there are two mods I'd like to hear your opinion on: 1. A baffle for the oilpan regardless of the powerstage to prevent oil starvation (e.g. Lamspeed) and 2. A block guard from 500HP onwards.

[@AJClubsport]

Cheers mate, I will come back to you on this!

[@lauriedooker1031]

Another great video 👍🇦🇺

[@AJClubsport]

Thankyou Laurie, really!!

[@Fastgatto]

super interessante !

[@AJClubsport]

Grazie!!

[@Anthony-mu3to]

Good job Congratulations🎉🎉🎉
and HEL best product😊

[@AJClubsport]

Thankyou Anthony!

[@Kirtanus]

Thanks for putting so many things together. Information on the proper gr yaris builds are so hard to find. Forums are hard to search and scattered. Workshops do not show complete info to invite you to come to them. Many manufacturers just hyping on GR Yaris without proper development.

[@AJClubsport]

Thankyou for following and understanding how hard it is!!

[@ericvermeulen9853]

Hi AJ , so there is a good video on the Corolla head and valves vs Yari and there is basically no difference , and yes my tuner did ease the boost in especially for this you mentioned, I understand on the R35 GTRs this is also a big factor when tuning them, they bend rods on stock turbos
Thanks for the great video

[@AJClubsport]

Cheers Eric: Toyota says that the exhaust valves are bigger. I am aware of that video, but it would be strange for OEM to state something unreal…

[@ericvermeulen9853]

Yes valid point , time will tell when more people open up the corolla engine for upgrades, Great videos,Thanks keep them coming

[@AJClubsport]

@ericvermeulen9853 will do, please keep sharing!!

[@Magician1961]

Love all your videos, but dont want ECU remap, so is it possible to add kelford cams. HJS Downpipe and larger oil and inetrcooler only? as wanted reliability and looking for 330 hp or so. Thanks and how we can contact you for the air vents?

[@AJClubsport]

Thankyou!
Yes, what you say is correct and the car should be very reliable provided you map at an EcuTek dealer and maintain it well.
Please contact me at [e-mail]

[@peterpyzer]

Hello !
Can you please Help me
I bought lower Springs 30mm in Front 25mm rear
I bought 25mm space Disks Front and rear to Put the wheels more Out (and Oz Rally rims)
I will let build IT this Weekend in
WE will allign the wheels after
Without the lower Springs only with the 25mm Disks the wheels looking so straight and ugly xD
I bought this screws where you can Go to 2 degress Camber in Front and rear
I only Drive on Road sporty
What Camber in degress should WE do in Front and on rear ?
Please Help me would be great
Thank you

[@AJClubsport]

Hello Peter, thankyou for your message.
Quick reply 2* camber in front.
Full reply: at that lowering point you will already be in negative camber gain given the geometry of stock hub and arm assembly. This will not perform so well.
I would also not use the spacers, as it will make your car even softer and the soft stock dampers already have a reduced travel because of lowering. The car will feel more stable up to 80% driving, but then will become sluggish in transitions and it will be difficult to recover realignments after drifts over second gear

[@peterpyzer]

Thank you for your fast answer
2 in Front OK
And in rear ?
I understand that and thought the Same , but i dont want to Break any world records or so and im enjoying more the optic from the Car Later than the Last Performance If you understand
I complete understand what you mean but i still wanted in my Case optic > Performance

[@pete4839]

Hi, I've just seen this and thanks for the video.
My initial thought was wondering why you had created your own tuning stages? Stage 3 would be considered a fully forged/ built engine, and stage 4 would be an entire engine swap to a race unit?
I know you have a lot to cover in this video, however you seemed specifically interested in off the shelf parts rather than tuning. A closed deck conversion would normally be considered vital when upgrading to forged components - along with a block bore/hone. Spark Plug temperature levels need changing at this point.
Also something to include would be the issue of oil starvation and how it can be prevented with a baffled sump or dry sump conversion.
Regarding suspension, the powerflex inserts would be a bare minimum after 450bhp, then specific mounts are needed. At this power level the stock gearbox will begin to fail along with the transfer case.
With a sequential gearbox, a twin plate clutch is essential as single plate will fail under WOT gear changes.
Brilliant video and I just wanted to add this so people who are serious about taking the GRY to a high level will know what's expected as the minimum 🤙

[@AJClubsport]

Hi Pete,
The stages are divided because in this way it is more clear what to get for the application specific engine.
The closed deck is something I will talk about later, as things are not so clear to me still.
Clutch is told, and its clear in my advice.
Many things I state are to be concurred with each one’s tuner, as I say, because I don’t specifically nominate every product.
Oil starvation, again, I will talk about but truth is that it’s not major for most and that the only solution out there, from Lamspeed, doesn’t look so great to me.
Videos on brakes and suspension both I have already done and I will do new soon, difficult to get all the parts quickly.
Doing my best!

[@pete4839]

Just wanting to be constructive - not taking anything away from your hard work 🤙
Could be worth linking to some of the more highly tuned GRY videos. @Hampshire_photography has two GReat ones 😊

[@AJClubsport]

@pete4839 cheers

[@Faces98A]

What would you say is a good option for tunning my engine if i dont have acces to a tunner in my city?

[@AJClubsport]

At the moment it is possible to get remote tuning from Ecutek dealerships: they will provide you with an OBD dongle and its done online! ACME and Litchfield are both dealers

[@Faces98A]

@@AJClubsport Thanks! I just found out about this a couple of days before reading your response and already got in contact with Litchfield, I think it’s the best and most versatile way of tunning, however I’ll upgrade some other things before, I just ordered a set of Öhlins… and they ain’t cheap!

[@AJClubsport]

Mate, not the Ohlins!!!
I made all the possible explanations…

[@Faces98A]

@@AJClubsport unfortunately I hadn’t watch that video, you make really good points, but in my case: I wanted something I I could use mostly on the street, and it all came down to ride hight, there are a lot of speed bumps in my city, big ones! I was going to get KW but those lower the car at least 25 mm, winch would make my car imposible to drive, and ohlins lower it at least 5 mm, what would you say could have been a better option for me? I really need something close to the stock ride height

[@AJClubsport]

As long as you are happy with it mate, all is good!

[@alexeyyatsew8004]

got rear diff overheat in stock Yaris with MPS 4s standard tyres and just 11 degree outside temperature in 20mins track session :facepalm ......

[@AJClubsport]

Yep!! 👍

[@Kirtanus]

I've added small airtec cooling duct for rear diff and for stock power and tyres there were no issues with diff even in 38 air track day. (Brake rotors curved however ;) )
But i would suggest diff cooling update for any track use on semi slicks as mandatory.

[@AJClubsport]

@Kirtanus did you see and difference st all with the diff air cooler?

[@Kirtanus]

​@@AJClubsporti really installed it before my first track use so sadly can't compare. But last track day I was pushing quite hard with long sessions and no diff issues. Probably it also affected by my aggressive geometry. With negative toe at the rear the car rotates easily under power, leaving less pressure on the rear diff.

[@Kirtanus]

Max Transmission temperature in 38 air stress track day - 115 degrees
In 14 air last week - 93 degrees.
This is a gearbox sensor. Haven't found a dedicated one for the rear diff...