2008 Mitsubishi Evo GSR: GST Motorsports Massage

Since we were going to the dyno anyway for our AMS exhaust comparo on Project Evo X, I figured I'd maximize our time spent there. I'm all about multi-tasking, especially when it comes to horsepower.

And GST Motorsports has just the thing to keep me busy--an upgraded boost pill assembly, which reduces the boost solenoid's duty cycle for a given boost. In layman's terms, it gives us more headroom to up the boost.

Bryan Medway, Evo tuner at GST Motorsports in Hayward, CA, joined me at the dyno with laptop and boost pill in hand. He's fairly exclusive to tuning Evos, but this specialization has made him among the most sought-after Evo tuners on the west coast. That, and he's one of the nicest guys you'll ever meet.

Bryan will be doing all the work of installing his boost pill and massaging the Evo's tune with the latest release of OpenPort ECUflash, a open-source flashing software for Evos; the development of which Bryan has been instrumental.

Dynamic Autosports in Lake Forest, CA offered up the use of their Mustang dyno for the tuning process. Unlike RRE's DynaPack hub dyno, the Mustang uses traditional rollers that don't require the wheels to be unbolted.

Based on our previous experience with these two types of dynos, we knew better than to expect the numbers to be comparable. Boy were we right. I'll post up the baseline dyno plot shortly. Don't go too far.

Jason Kavanagh, Engineering Editor

Categories: 2008 Mitsubishi Lancer Evolution GSR