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Forge Motorsport

Forge Motorsport Intercooler Toyota Corolla GR

Forge Motorsport Intercooler Toyota Corolla GR

$1,199.30 USD
$1,199.30 USD
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The Toyota Yaris GR has proven itself to be a fantastically capable vehicle since its release, and the development team at Forge Motorsport have been able to work their magic once again to find further improvements. The next instalment, is the release of FMINDK43 the new upper airbox for the Yaris GR.

After continued testing and discussions with owners of Yaris GR’s, the stock airbox has proven itself to function well, especially with the stock map. However, the weakness in the airbox is most definitely the quantity and directional flow of the air. As such, we explored several different avenues, before settling on a replacement upper airbox that mounts to the stock lower. When used in collaboration with the Forge Motorsport Inlet Duct (FMINLD1) performance car part, it ensures a consistent cold feed of air into the lower airbox that can then be delivered into a refined upper airbox. The increased diameter from 80mm of the stock inlet pipe to 89mm produces a volumetric increase of around 20% in just the connecting pipe from turbo inlet adapter to the airbox alone. After running data and tests it was decided that we would not use a panel filter, but instead a cone filter as shown in the CAD below. 3D scan data was utilised to ensure that the cone filter would fit in the optimum position inside the lower airbox, not just for ease of fitment but also to allow for optimum flow into the inlet tract.

Due to the sensitivity of the MAF and stock map of the Yaris, a lot of testing was required to ensure that performance was gained without inflicting the driveability of the car - especially as we were changing from a panel filter to a cone filter and an increased diameter. To test this in real world conditions, we created a modular design that was 3D printed and allowed for different variations of MAF position, diameter, and airflow to be tested on road and the dyno. After finding the optimum design, we then reprinted the full prototype and left this on the vehicle. This allowed us to continue our testing to prove out the performance repeatability in real world driving conditions. We also noted at this stage that there is a small gain in induction noise.

This product works extremely well when collaborated with existing Forge Motorsport performance products for the Toyota Yaris GR. With the release of our turbo inlet adapter (FMTIA8) we were able to increase the volumetric capacity over the stock inlet by 53%. Once coupled to this intake we have been able to ensure a smooth airflow from filter to turbo with minimal restrictions by continuing the 89mm diameter for a large proportion of the inlet tract. It is designed in a similar way to a conventional velocity stack by routing the air more directly into your turbo charger and allows more air to be compressed due to its larger capacity. This can have a positive effect on acceleration after long deceleration or in between gear changes due to more air being kept within the intake system.FMINDK43 is part of our acclaimed Hi Flow range and will ensure that your vehicle is getting critical cold air.

Not only are Forge Motorsport performance parts a better option for an improved drive, but carbon fibre car parts really help give an engine bay some character. The high-quality carbon fibre is prepreg 2x2 twill formed in an autoclave from billet tooling and finished with an anti UV gloss gel coat.

Dyno Results

We found that FMINDK43 with the stock turbo inlet produced peak gains on average of 13bhp at the wheels and peak torque gains of 8nm.

The dyno graph below shows a comparison between the stock airbox, the 80mm prototype and 89mm prototype. We ran a total of 8 different prototype variations of MAF height, MAF distance from entry and inlet diameter to ensure that the best solution was used. You can see how sticking to the stock size diameter and MAF position with the cone filter produced a slight improvement to the wheel horsepower, however when increased to 89mm we were able to produce some fantastic gains from such an easy to install bolt on modification.

Another important observation to note is where the power is delivered. As you can clearly see on the dyno graph that the engine produces a much higher power earlier into the rev range. From 2000rpm to 3600rpm the lower flap in the airbox is opened via a solenoid, and the dyno graph shows that at the same rpm there is an increase of around 15- 20nm of torque with FMINDK43 installed compared to stock. This figure is noticeable when driving, and you can feel that the vehicle picks up much better than in stock form.

It’s worth remembering that this is with a stock ECU and no tune, so we would expect to see mapped cars returning even greater yields of power as they will be able to utilise the increase of airflow.

The performance part kit comes complete with everything you need for installation, which can be carried out in around half an hour, including a set of full colour instructions.

Our Toyota Yaris GR performance parts will help improve both the look and drive of your car.

Features:
  • Gains of 10bhp and 10lbft
  • Temperature drops of up to 20C
  • Reduced turbo lag, increased response
  • Greater overall surface area for greater heat dissipation
  • Utilising a race specification Tube and fin construction air core
  • High flow cast end tanks ensuring optimum air transition for cooling efficiency
  • Dyno proven horsepower and torque gains
  • A smoother power curve
  • Volumetric increase of more than 100%
  • Frontal area increase of over 40%
  • Includes necessary hardware and instructions for installation
  • Lifetime warranty
Install Instructions: Fitment:
  • Toyota Corolla GR
Note:
  • In line with our policy to constantly review, revise, and improve our product range, the appearance of the product you receive may differ from the one advertised.
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Customer Reviews

Overall rating: 4.8 / 5 from 37 reviews.

Customer photo review of Racer X Fabrication GR Corolla Lateral Shift Linkage

A must have upgrade for your GR Corolla. This unit eliminates the side to side play that the factory shift linkage has. Nice, tight shifting post install. Awesome upgrade 👌🏼

Chris Mimikos N. 5/5 Verified

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Customer photo review of Racer X Fabrication GR Corolla Catch Can

Order was at my door swiftly and the install went smooth. I highly recommend OneSix Snail for all of your GR needs. Catch can looks great guys 🤙🏼

Chris Mimikos N. 5/5 Verified

Racer X Fabrication GR Corolla Catch Can

Customer photo review of Ice Cap Rolla Tee

Awesome shirt, love to rep my car even when I’m not in it! I wear this everywhere! Very comfortable materials, the print on the shirt feels quality, I absolutely love how the colors pop.

Riley E. 5/5

Ice Cap Rolla Tee

Customer photo review of Ghost Ride The Whip Tee

The background print is too dark. The outline of the trees cannot be seen. The tombstones are very dark and the names on them cannot be seen. Cannot see the wheels or grill.

Ted C. 1/5 Verified

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Customer photo review of Black Rolla Tee

Nice quality and fits good. Love the logo!

Bruce W. 5/5 Verified

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Customer photo review of Ice Cap Rolla Tee

Love being able to pick my car color. Might go for the long sleeve in a few months.

Jerry S. 5/5 Verified

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Customer photo review of OneSix Dad Hat

High quality, great fit and looks great next to my GRC!

Paul G. 5/5 Verified

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Customer photo review of Ice Cap Rolla Tee

Ordered an ice cap tee. No idea how a chose a small for my dad bod but my mistake was my daughter's gain. She immediately stole the shirt because we work on the car together. The Grey color is perfect for the colors in the design and makes the red pop. The design is sick and the quality shirt is really really nice. So much so I ordered the right size immediately! Buy one!

Paul G. 5/5 Verified

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Customer photo review of OneSix Dad Hat

This hat…what can I say? Do you want to be the talk of the GR community? Do you want to have people look at you and know you mean business? Do you want keep the sun out of your eyes (wearing it forward of course)? Do you want to be successful? If you answered yes to any of these, then this is the hat for you! The fit and feel of this hat is perfect, much like the Brin Naub® and synthetic leather-trimmed sport seats in the GR. The embroidery seems as though it was done by the hands of angels, every stitch to perfection. When I first put this hat on, I lost 15lbs and gained another 15lbs in muscle (can’t confirm it scientifically, but the scale stayed the same and I felt stronger). My senses while having this hat on were also heightened. The 6 speed manual transmission in my GR Corolla didn’t stand a chance as I flew through the gears masterfully while passing the Ferrari SF90 stradale awd that couldn’t keep up with me (it may have been slowing down to turn, but pretty positive they saw me and knew they couldn’t keep up). Bottom line is, you want this hat, you NEED this hat. I’d recommend buying atleast two of them for when people notice you’ve become too powerful and try to steal your hat. Always have a backup! And remember, with a great hat comes great responsibility, or something like that. Buy this hat now!

Michael C. 5/5

OneSix Dad Hat

Customer photo review of Gunmeta ガンメタ| Gun Metal Tee

Love the design of the shirt!! I ordered two of them and they were delivered quickly after. My family loves this shirt as I have a HM GRC. Next time, when I order again, I’d consider getting one size larger.

Anthony L. 5/5 Verified

Gunmeta ガンメタ| Gun Metal Tee

Customer photo review of Hyouyuki ヒョウユキ | Drifting Snow Tee

Graphics are sick, they’re printed well (screenprinting feels thick, like it won’t crack, fade or peel so that’s good) printing seems accurate (back is perfectly centered), blank material is always s tier w comfort colors so that’s good. 10/10 will buy again

Vincent R. 5/5 Verified

Hyouyuki ヒョウユキ | Drifting Snow Tee

Going to make this short and sweet, was going to order my MBRP exhaust through a different company but before that I had onesix In the back of my head. The experience I had was top tier. They answered every single question and kept me in the loop with shipping. I would definitely recommend buying from these guys! They're in it to make sure the customers that buy from them are more then satisfied...but well taken care of.

Dan D. 5/5 Verified

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Really love these shirts bought 2 and a hat im loving them so much.

Jakob L. 5/5 Verified

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Nice design and graphic quality. XXL shirt runs pretty big. I should have sized down one.

Ted C. 4/5 Verified

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Frank B. 5/5 Verified

Off White Rolla Crop Top

I love my t shirt. The material and the prints are perfect.

Jairo J. 5/5 Verified

Supersonic Red Rolla Tee

Great soft shirt awesome design I would love to get a one six snail sticker to put on the car as a sort of sponsor/advertisement :)

Ethan F. 5/5 Verified

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