Project GD STI, Adding an Intercooler Sprayer to a Front Mount Intercooler
Subaru STIs have a water intercooler sprayer as factory equipment. There is an intercooler spray button on the dash with a large water reservoir in the truck with a pump. …
Subaru
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Project GD STI We Don’t Need a Damn Rotated Mount Turbo
So with our last go around of Project GD STI we had reached our goal of 500 wheel hp but we were not entirely pleased with our powerband. Our power…
Project GD STI, Our Custom Stoptech Big Rear Brake Kit Comes Together!
In our last segment, we talked about the lack of rear brake upgrades for the GD and why it was difficult to design one. We started out with a Stoptech…
Project GD STI, Designing a Stoptech Rear big brake kit with BD Engineering
We had always wanted to upgrade the rear brakes on Project GD STI but were not able to do it. Nobody made a quality rear brake upgrade for the car.…
Project GD STI, Installing an Upgraded Precision Ball Bearing Drop In Turbo and Larger Injector Dynamics Injectors
In our previous article, we had gotten a new Precision Turbo ball bearing center section drop in factory replacement turbo to replace our previous turbo that was choking our engine…
Improving Shift Feel with Cobb Tunings Weighted Shift Knob
Our Project GD STI has been running a Cobb Tuning short shifter and we really like it. We have it adjusted so the throws are not Syncro crunching short and…
Project GD STI, Improving the Powerband with Precision Turbo and Injector Dynamics
Previously we had dyno tested and tuned Project STI at Church Automotive testing. Although our car made a pretty impressive 501 whp and 487 lb/ft of torque our power peaked…
WATCH: Big Power Subaru Parts! Turbo | Exhaust | Fueling
If you saw our video on how to build an EJ so it won’t blow up (see the link below if not) you’ll definitely want to watch what turbo,…
Fixing the GD WRX Fuel System with Radium Engineering and DeatschWerks
On our Project GD STI we upgraded the fuel system using a Radium Engineering fuel hanger and a single large Walbro TIA450 fuel pump. However, we found that Subaru wiring…
Project GD STI, Updating the Telematics with Sony
When Project STI was sitting idle for a few months while we were assembling and installing the new motor our Pioneer double DIN audio system died. When doing research to…
Onsite Wheels Fixes Project GD STI’s Wheels
So seconds after lecturing my daughter about curbing wheels I did this… It looks like another job for Onsite Wheels. Onsite Wheels had previously fixed the wheels on our Project…
ASF Machines Subaru Engine Assembly Tools
If you work on Subaru engines, ASF Machine is producing some cool tools to make your day easier and to help you do a better job! The first tool is…
The Mystery of the Round Subaru Radiator Cap
Having an incorrect radiator cap on a turbo EJ Subaru is a critical mistake that even seasoned Subaru builders, including us have made. In fact, one of our sharp-eyed readers…
Project GD STI, Dyno Tuning for Big Power with Reliability
Well, it’s finally time to get Project STI started and tuned. As with many of our projects, we enlisted the help of Shawn Church of Church Automotive Testing to get…
Rodger Clark Motorsports Subaru EJ Low Temperature Opening Thermostat
We had noticed that the coolant temperature of Project STI was pretty hot considering that the car had a big CSF radiator and a Greddy oil cooler, in fact, the…
Project GD STI, Fixing all the Details!
There are a lot of small details involved with swapping an engine, especially when upgrading all of the system parts for higher performance. These make the difference in the reliability…
IAG’s New Easy Plug and Play Drive By Wire Big Throttle Body for the EJ257.
We previously had gotten an IAG Performance big throttle body for Project STI, although it was a nice piece it was not exactly user-friendly. You had to get the drive-by-wire…
Project GD STI, Out with the Old and in with the New!
It is time for us to swap out our damaged EJ257 and install our IAG 700 engine. We spent a lot of time waiting on parts to finish the job,…
Subaru WRX Econo Suspension! Part 2
We had last left our GD WRX with the front suspension mods from ST Suspension and Whiteline. Now it’s time to finish the installation at the rear suspension and get…
Subaru WRX Econo Suspension! Part 1
A lot of what you see here at MotoIQ are often really high-end mods that many people can just dream about or are so high performance and track level that…
Project FR-S, Improving the Aero Balance with Verus Engineering and Victory Function
When driving Project FR-S on the track we had noticed that although the car had excellent handling in general, it had understeer in high-speed turns. We also noticed in pictures…
WATCH: Subaru Engine Swap Must Have Parts!
If you’re building a high performance Subaru engine there’s a lot of parts and accessories to consider buying or upgrading while you’re in there. In this video Mike explains…
Nightmotorsport Air Oil Separating Billet Valve Covers for Subaru EJ Engines
Subarus like all flat engines, blow a lot of oil out of the crankcase in their blowby gasses. This is always a problem with performance flat engines like Porsche or…
Freeing up the EJ257 Intake Flow with Process West and IAG
We were planning to run a Cosworth intake manifold on Project STI’s IAG motor but we were unable to find one for a decent price as they have been discontinued…
Cutting Big Weight From Project STI With AntiGravity Batteries and MeleDesign Firm
While we are going through Project GD STI, repowering it and upgrading many of its systems, we thought it would be nice to replace the car’s heavy AGM battery with…
Reducing FA20 engine Vibrations and Boosting Power!
When driving our Project FR-S on the track, we noticed that the engine has a pretty noticeable vibration at 6500 rpm. This was especially noticeable in the higher gears where…
Project GD STI, Getting Ready For the Engine Swap
In our previous articles, we covered the build-up of our EJ257 engine collaboration with IAG Performance. Now we have been collecting a bunch of parts to make our installation go…
Project GD STI, IAG’s new high capacity EJ Oil Pump!
IAG has just dropped their Stage 1 and Stage 2 oil pumps for all EJ engines. We will be using their Stage 2 pump on our own Project GD STI.…
WATCH: How to Solve Your Subaru Fueling Problems. The Right Way!
In this video Mike explains the shortcomings of the stock Subaru fuel system and how to fix it the right way. This fuel system is capable of supporting up…
Low Buck WRX Brake Upgrade
If you own a GD WRX (2002-2007), your car is probably getting up there in miles and if you need to go through your brakes, there is a nice low…
WATCH: Fix Subaru Oiling Issues for Good!
In this video Mike talks about yet another shortcoming of the Subaru EJ engine and probably the best way to fix it! If you liked the video, please subscribe…
Solving Subaru EJ Oiling Issues for Good with IAG Performance!
Subaru EJ engines are known to have oiling problems caused by the oil pan and pick up. We personally know quite a few people who have lost engines on the…