Both are 2017 STi’s, but the one on the right is getting the PSI built turbo kit. It’s pretty awesome when a customer brings in a practically brand new car for a cool build. The engine is being left stock… for now, but it’s getting the turbo treatment with a big ole Precision turbo.
The plan is to have all the intercooler piping powder coated wrinkle black, and the header & up-pipe ceramic coated by JT Coating. It’ll have a nice clean look, especially with the shaved and powder coated intake manifold. This setup will be pushing it for a stock motor, but I foresee this car getting a built engine in the near future. Here’s a few pics of the fabrication process.
Some mocking up happening right here
All back from coating and looking fresh! JT coating killed it on this one. Big thanks to them!
Everything is getting bolted up and it’s looking good. I’m really digging the wrinkle black powder coating on the compressor housing, intercooler pipes, and manifold. It keeps the car looking brand new and almost stock at first glance.
After getting finished up and tuned by Anthony, it made 388whp and 358wtq at 16 psi! This turbo set-up is capable of a good amount more, but we kept it safe due to the stock engine and clutch.
Here’s a dyno graph comparing the car when it was stock and after we finished up with the turbo kit and tune. You can see the massive difference in power. With our big tube UEL header, the 5858 Precision turbo hits full boost only 300 RPM past that of a stock STi. Having that much more exhaust flow played a huge role in making these kind of numbers that early in the RPM range. With a built engine and upgraded clutch, this kit will be ready to handle a bunch more power. A big thanks to Mike for bringing us this project, and we hope to see him and his STi back soon!
We had a longtime customer bring this car in for a pre-purchase look over. After going over the car we found that it had low compression in one of the cylinders and was breaking up while going into boost. The customer purchased the car afterwards and brought it back in for a base tune so it could at least be driven smoothly & safely while a plan for a full build could be laid out.
Once on the dyno a small bit of tuning got the car running smooth and clean throughout the rpm range. Surprisingly even with the low compression at only 20psi it laid down just under 400whp & 380wtq! The owner was extremely happy with end result.
Knowing the engine has some issues & won’t last forever, the new owner is preparing to build it over the winter and possibly make a few changes to the turbo setup as well in hopes of bigger power. Check back in the future to see what route this car decides to take, but for now enjoy the sights and sounds of this 400whp widebody hawk-eye.
Here at PSI PROformance we have done a few recent 4-500whp rotated turbo kit Subarus with great results. Some customers just want more, and we are here to make it happen.
We have modified this STi a few different stages since the owner purchased it and after talks of wanting more power he decided on a 600hp goal.
The project began with our custom-spec built/sleeved engine, and our custom rotated turbo kit. With the power goals in mind, a Precision 6262 turbo & E-85 fuel were chosen to make it all come together. With a host of supporting mods & custom built parts done in-house the car easily put down 600 WHEEL horsepower after being tuned on our Dynojet.
We have since installed a resonator to our Race-spec exhaust and the car is happily in the hands of the owner. We are looking forward to it coming back in for a re-tune on higher boost when the owner is ready. At only 29psi the setup is not even breaking a sweat.
The customer brought the car back a week later to have us add a muffler as he was getting dirty looks from annoyed neighbors.
Please check us out on facebook to see regularly updates photos from around the shop including the build of this STi. If you have any questions regarding the build, or would like to start a Subaru build of your own please don’t hesitate to contact us at the shop. Our number is: 215-361-7100
Today at PSI PROformance we had this Subaru WRX STI Hatch in for a dyno tune. It appeared pretty much stock on the outside, but it had plenty of work under the hood to push some power. Some of these modifications include a FP Red turbo, Front Mount intercooler, Full Race Equal Length Manifold, and Wiseco Pistons and Eagle Rods. With these mods the car was able to make 429 whp and 400 tq on about 23 pounds of boost. Here are the photos and video from the dyno tune. Enjoy!
Behind the scenes at our Performance Parts, Tuning, and Fabrication Shop