STI Dyno Session Pretty much every tuner in the world thinks the 2015 STI is the same old boring EJ25 engine and that it’s going to tune the same and make the same power. Well I hate to say it, but they’re all wrong (as was I)! Our initial dynoing of the 2015 STI showed something very interesting. It made more power than all previous STI’s. I’m not talking about a couple WHP, but more like 20 Wheel HP at […Continue Reading…]
Normally, when one of our shop cars goes up for sale, we just sell it the way it sits. However, for this car I am going to try something different. The buyer will be able to build the car to the specifications they want. That means, starting with a base car with a base price, then allowing the customer to build it up with a few options. Whatever stage the car ends up, it can be dyno tuned and given […Continue Reading…]
When Subaru released the Version 8 STI in Japan we noticed how they moved to a twin scroll turbo and equal length exhaust manifold. This is what inspired us to make our first header for the WRX/STI! Would taking the equal length design of this JDM header and adapting it to fit our US cars actually make a difference in power? Would it spool worse? How would the sound change? DESIGN The design of the PERRIN equal length is very […Continue Reading…]
Spring Rate 101 by Roland Graef. Suspension customers shopping for aftermarket springs will sometimes resort to shopping for springs by spring rate. While the rate of the spring is a measure of spring performance, it is not the only influence of vehicle performance and handling, especially when the chassis is lowered. There are many factors that come into play when it comes to suspension tuning. When does a higher rate spring feel softer than a lower rate spring and a lower […Continue Reading…]
A new part brought to you by….. you! Over the last few years our Equal Length Header has been one of our most popular and most loved parts we have made. From the beginning we choose a perfect size tube for the primaries which produced more power and quicker turbo response compared to any other header out there. This was proven first by us, then by customers on forums and other shops. Even though its been a huge […Continue Reading…]
Dyno Results This is what you have all been waiting for! Finally the “Proven Power” side of things. But first a few questions surrounding the GTX3076R and other GTX turbos. The Question, “Is the GTX turbo Laggier then the GT turbo?” Answer, “NO” The Question, “Is the GTX turbo going to make more power?” Answer, “YES” The Question, “Is the GTX turbo better?” Answer, “See above answers” The Question, “Is the GTX worth the extra money?” Answer, “YES” The Question, […Continue Reading…]
This test was done on our 08 STI shop car. Before we get to far into the fun stuff, the STI is in our Stage 2 form. This means it has our twin cat downpipe, 3€ quad tip exhaust, and our Stage 2 AccessPORT tuning. With that said we are going to show 2 tests in this article one, the PERRIN 08 intake and the PERRIN Version 2 inlet hose. First lets explain the dyno and testing methods we are […Continue Reading…]
The PERRIN turbo inlet hose has been one of our best selling, long standing products for many years. Since the beginning, we have made our part different than the rest in that we didn’t just make a copy of the OEM part. We had something different in mind to make the installation of this go much easier, and also out perform other turbo inlet hoses offered by our competition. HISTORY LESSON When we got the WRX and started making parts […Continue Reading…]
We were the first to dyno the 08 STI, we were the first to bring you intimate pics of the car, and we were the first to tune the AccessPORT on the STI! In stage 1 form (bone stock car), with some initial testing we did, we got great gains! We saw roughly 40ft-lbs and 35WHP with nothing other than an ECU reflash! Its not very often that you can get those types of gains from a bolt on/flash on. […Continue Reading…]