We’ve done Mustangs with Prochargers before, but this one is a little different. The owner brought us the car with the Procharger already installed and wanted to do a little twist on it. He wanted an smaller diameter pulley for more boost, but a waste gate on the intercooler piping to regulate boost pressure, and allow for a better torque and turning a procharger into a TORQUE MONSTER. With this kind of setup he will be able to run different amounts of boost up to the max psi that the pulley produces.
Placement of the red Tial blow off valve and wastegate was definitely important. From the outside others had to know that this Mustang was something special. We decided to mount them on each side of the intercooler so that they’d show in the lower part of the front bumper. Their red color definitely makes their presence known.
The small diameter pulley can produce about 20 psi of boost, but the wastegate will be able to regulate it. The Tial BOV is located under the MAF on the left side of intercooler, which Would cause distorted readings. To solve this, we relocated the MAF to the cold-side intercooler pipe. we also added a PMAS Hpx Frequency Maf to allow the proper scaling for this setup This smoothed out readings and allowed us to get accurate data while tuning.
While we were under the hood, we upgraded the crank sprocket and oil pump gear as preventative maintenance, since they are known to fail. Once all of the fabrication was done, it was pulled onto our Dynojet for some tuning.
After some work on the Dyno this thing laid down an Impressive 702whp and 575wtq at 13 pounds of boost. The tune was Done through Hp Tuners. The blue lines are from the previous tune with the procharger before the smaller pulley and other modifications we did this time around. It’s definitely a substantial increase in power
Here’s some photos of everything all finished up.
Current modification list:
Corsa Sport Cat-back
PMAS HPX Maf
MMR Crank & Oil Pump Gears
Tial Q BOV
Tial 44mm Wastegate
3.8″ Procharger Pulley
Custom Intercooler Piping
We will be offering this setup as an exchange service with modified inter coolers and piping kits for anyone interested please contact us Sales@psiproformance.com
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!
Here at PSI PROformance we had the opportunity to work on a customers ’06 Ferrari F-430. After purchasing it he decided to do a few track days and quickly realized it needed changes. First we upgraded the brakes and suspension, which in combination with the already installed HRE wheels (20×13, 345/25/20 in the rear) the owner was happy. Thoughts of twin turboing the car were tossed around but with two other high horsepower cars already in the stable the idea was dropped. The car definitely needed some more power, but most importantly it needed more sound & feel. To get a little more power out of the car while giving it the F1 car type sound everyone loves building a custom exhaust became the next step. The owner purchased a set of Fabspeed Sport headers and gave the OK to build the rest of the exhaust. We modified the headers making them v-band, which we continued using for the rest of the exhaust. This helps with ease of installation, no leaks, and gives it a cleaner overall look.
We designed and fabricated the entire exhaust including the tips in house. Using the v-band design we are able to swap out catalytic convertors or run the section with open pipe. Being this is the owners track toy, cats have not been used. Once we finished, the owner brought us Fabspeed carbon fiber Maxflo intake covers and BMC air filters to help it breathe a little better. We installed everything and did some dyno testing on our in-house dynojet.
Stock the car put down 401whp & 286wtq. With the new intake, header, and exhaust setup the car put down 422whp & 297wtq with no tuning! That is a very respectable gain with no tuning. These motors are already built & tuned so fine that its hard to really extract much power out of them. We hope to possibly tune the car soon, but that will be a post for another day.
Shortly after the car was finished up we uninstalled the exhaust and sent it out for a High Temperature heat coating. Now it looks awesome, and performs awesome with no potential cooling issues from the thin wall piping.
We are very proud of the way this turned out and even though it sounds awesome in the video there is no way of truly appreciating it without hearing and seeing it in person. We hope you enjoy the small video that was put together, and if you have any questions please shoot us a PM or call the shop.
Behind the scenes at our Performance Parts, Tuning, and Fabrication Shop