Subaru Archives

Project GD Subaru STI, Building the Engine Part Five: Final Engine Assembly With IAG.

Posted on June 20, 2021
byMike Kojima

In our last story, you saw how IAG Performance assembled our short block with meticulous care. Now our engine travels to the second of IAG’s two cleanrooms for final assembly.…

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Project GD Subaru STI, Building the Engine Part Four: Assembling the Short Block With IAG.

Posted on June 13, 2021
byMike Kojima

If you have been following our EJ257 engine build series with IAG Performance, you have been able to look inside IAG’s incredible attention to detail in machining and parts selection. …

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Project GD Subaru STI: Building the Engine Part Three, Cylinder Head Technology With IAG Performance.

Posted on May 23, 2021June 9, 2021
byMike Kojima

The cylinder head is one of the most important parts when it comes to making power in an engine. Although headwork is less critical in a turbo engine than a…

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Project GD Subaru STI: Building the Engine Part Two, Bottom End Bits With IAG Performance.

Posted on May 2, 2021June 9, 2021
byMike Kojima

In part one of our series of building the motor for Project GD STI we talked about the IAG Performance engine cases we are using and all of the prep…

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Project GD Subaru STI, Building the Engine Part One, Prepping the Case With IAG Performance.

Posted on April 13, 2021June 9, 2021
byMike Kojima

It had to happen eventually. Our Project STI was running great. We had plans to build the engine as our 400 whp was past the limit that a stock bottom…

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SuperPro Suspension Parts joins the Devine Force Racing STi and is put to work at COTA

Posted on March 8, 2020March 9, 2020
byDevin Hofmann

Subarus are known for their competitive advantage of AWD and the ability to always have traction pulling you through the corners. It’s important to note the use of pulling, and…

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StopTech/G-Loc Combo for the Devine Force Racing STi

Posted on November 3, 2019November 3, 2019
byDevin Hofmann

We’ve all been there, that moment coming down a long straightaway, absolutely HAULING FAST as possible, as the unforgiving braking zone approaches. A quick tap to the brake pedal with…

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Installation and testing of the KW 2-Way Clubsports on the Devine Force Racing Time Attack STi

Posted on October 9, 2019
byDevin Hofmann

At last! It’s the end to unwanted body roll, understeer and driving an off-roading truck through the esses of Michelin Raceway Road Atlanta. We have finally taken the steps to…

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Project Subaru GD STI, Improving The Ignition System!

Posted on September 19, 2019September 24, 2019
byMike Kojima

Nowadays it is hard to improve the ignition on late model cars. New car ignitions, especially ones with coil on plug systems are more powerful from the factory than racing…

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The Dreaded Subaru p0011 and p0021 DTC Codes, Don’t Let Them Wreck Your Turbo!

Posted on August 29, 2019December 4, 2019
byMike Kojima

So DO NOT do what we did when our Project GD STI turned on a p0011 OBD DTC code. What we figured was some sort of sensor issue ended up…

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Features

SlipAngle Podcast /// Eric “Dewey” DeWitt and Jeremy Boysen are Subaru Gurus

Posted on August 12, 2019March 25, 2021
byAbrin Schmucker

Episode 271 – Adam and Abe are at Blackhawk Farms Raceway over the weekend and had the best time. They talk to time attack drivers Eric “Dewey” DeWitt and Jeremy…

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Tech

Rapid Designing and Testing Suspension With 3D Printing Part 2

Posted on April 21, 2019April 24, 2019
byMike Kojima

In our last story, we were redesigning the steering knuckle/upright for the 2019 season on Dai Yoshihara’s Turn 14 Formula Drift BR-Z. Our design goals were to keep the tires…

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The Closed Deck Subaru EJ20, Built for Boost!

Posted on April 18, 2019April 22, 2019
byMike Kojima

In our last story, we were assembling the parts for Ian’s long rod stroker EJ205. Now that we had rods and a crankshaft from Eagle and Pistons from JE, it…

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Tech

Designing Suspension with 3D Printing

Posted on February 17, 2019February 18, 2019
byMike Kojima

Drift cars with their extreme steering angles are pretty difficult to design suspension for. A lot of things must be considered because geometry that works well on a regular car…

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Comparing the Falken RT615 to the RT615K Plus!

Posted on January 22, 2019January 23, 2019
byMike Kojima

The Falken RT615 has always been a good all-around Ultra High Performance dry weather tire with decent durability. Good enough to be daily driven and good enough for the track. The…

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Wheels and Tires for the Subaru GD WRX

Posted on December 19, 2018December 19, 2018
byMike Kojima

It is time to get some new shoes for our Project GD WRX. We wanted an upgrade for the car that would easily fit into the wheel wells and would…

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Stroke to Rod Length Ratios and Building a Long Rod Stroker EJ205

Posted on October 18, 2018October 18, 2018
byMike Kojima

Like resoling your favorite pair of shoes, we are going to refresh the engine of our project WRX. If you have been following our series on the remake of Ian’s…

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WATCH: Stoptech Big Brake Upgrade for Subaru WRX

Posted on October 12, 2018
byJeff Naeyaert

Our latest project car, a 2002 Subaru WRX gets a huge improvement in stopping power thanks to a set of Stoptech big brakes! Hopefully you read the article we…

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ST Suspensions Coilover Upgrade for WRX

Posted on September 17, 2018October 9, 2018
byMike Kojima

Today our Subaru Impreza WRX gets a suspension upgrade with the ST Suspensions XTA coilover kit along with Whiteline Sway bars for improved handling and ride quality. ST Suspensions is…

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Dai Yoshihara’s 2018 Formula Drift Rebuild Conclusion

Posted on April 9, 2018July 2, 2018
byMike Kojima

Dai Yoshihara's 2018 Formula Drift Rebuild Conclusion by Mike Kojima So if you have been following along with our mini-series on what an end of season refresh on Pro…

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Dai Yoshihara’s 2018 Formula Drift Rebuild Continued!

Posted on March 21, 2018July 2, 2018
byMike Kojima

Dai Yoshihara's 2018 Formula Drift Rebuild Continued! by Mike Kojima So the rush to freshen Dai's car for 2018 by Eimer Engineering continues. In our last story, the chassis had gotten…

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Building an FA20 Race Engine for Michele Abbate: Part 2

Posted on January 27, 2018August 9, 2018
byMike Kojima

So when we last left off, we were putting together some awesome parts for Michele’s engine and were about to embark on assembling it. In the interest of long-term durability, we…

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Tech

Project Unpimp My Ride: Pedders Easyfit Suspension and Swaybars, Street Performance for the Toyota86/BRZ/FR-S

Posted on December 4, 2017January 8, 2021
byMike Kojima

Not all of us want a race car for the street. Although many of us are hardcore track day participants, autocrossers or canyon runner nuts, there are a lot of enthusiasts who…

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Building an FA20 Race Engine for Michele Abbate: Part 1

Posted on November 25, 2017August 9, 2018
byMike Kojima

We have known Michele Abbate ever since she was a college student doing track days with her trusty Mazdaspeed Protege and have followed her career as friends as she has…

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Project GD STI: Making More Power with Cobb Tuning and Precision Turbo Part 2!

Posted on July 31, 2017July 2, 2018
byMike Kojima

Project GD STI: Making More Power with Cobb Tuning and Precision Turbo Part 2! by Mike Kojima When we last left off with Project GD STI, we had just…

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Building the FR-S FA20 Engine with Stay Crushing, Assembling the Engine!

Posted on January 23, 2017July 2, 2018
byMike Kojima

Building the FR-S FA20 Engine with Stay Crushing, Assembling the Engine! by Mike Kojima In our previous installments of the Stay Crushing FR-S engine build, we have been accumulating the parts…

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Building the FR-S FA20 engine with Stay Crushing, Building the Cylinder Heads With Portflow Design

Posted on January 1, 2017July 2, 2018
byMike Kojima

Building the FR-S FA20 engine with Stay Crushing, Prepping the Cylinder Heads With Portflow Design by Mike Kojima In the last installment of our FA20 engine build, we covered the…

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Tech

5 Performance Car Engines That Suck

Posted on July 25, 2016July 2, 2018
byMike Kojima

5 Performance Car Engines That Suck! by Mike Kojima We are going to go out on a limb and make a lot of fanbois angry. They will call BS and…

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Building the Subaru VA WRX clutch and Flywheel with ACT!

Posted on June 20, 2016July 13, 2018
byMike Kojima

Building the Subaru VA WRX clutch and Flywheel with ACT! by Mike Kojima All wheel drive cars are traditionally hard on clutches. With tons of traction, launches involve a lot…

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Project GD STI: Getting More Power with Precision Turbo and Cobb Tuning! – Part 1

Posted on December 1, 2015July 2, 2018
byMike Kojima

Project GD STI: Getting More Power with Precision Turbo and Cobb Tuning! – Part 1 by Mike Kojima Our STI has been driving around as a daily for two years…

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Project GD Subaru STI Part Three- Making More Power with Greddy and Cobb Tuning

Posted on August 9, 2012July 3, 2018
byMike Kojima

Project GD Subaru STI Part Three- Making More Power with Greddy and Cobb Tuning By Mike Kojima When we last left off, we had turned our STI into a G…

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Project Gen 3STi: Testing the COBB Down Pipe and Exhaust

Posted on May 23, 2012July 2, 2018
byWesDumalski

Project Gen 3STi: Testing the COBB Down Pipe and Exhaust By Wes Dumalski When last we left off we were singing the praises of AMS and the Cobb AccessPORT,…