The Impossible Evo Part 5: The Brakes

I purchased the necessary 2-piece Brembo rotor hardware and installed the 2-piece rotors up front with a set of 4000 series DBA 1-piece rotors in the rear. The same ones we still use on the Pro Awe Time Attack Evo VIII. While I had everything disassembled, I installed extended wheel studs to make life easier when mounting and removing wheels at the track. Before anyone asks, no, I didn’t aesthetically refurbish the calipers. The seals and dust boots were in good condition and hopefully the calipers will take on the overheated and darkened Brownbo color that masks the fading paint and clear coat failure. A side benefit is that it lets other track rats know I’m part of the club.

Professional Awesome has worked with Hawk for years and one of the perks of having a close relationship is the willingness to help out on fact finding missions. We will be providing Hawk with as much data as we can provide that will help me optimize my brake system, but also provide info for customers who are running similar setups. Win-win!

Next, I was given a smorgasbord of brake pads by Hawk with a promise to provide them with a bunch of data. This is where optimization comes in, which I am banking on will give me great feeling brakes, with immense stopping power, vs. the mediocrity that I’ve previously experienced. In all honesty, I have never had luck knowing what pad compound to use or if I had the pad at proper operating temperature or if I bedded them correctly, etc. etc. Even the aforementioned Pro Awe Evo VIII had disappointing brakes until recently. We made some minuscule changes that unexpectedly transformed the braking force, yet we still aren’t 100% sure why. Now, I will test, swap, and test again, until we’re dialed in.

Professional Awesome also has a great working relationship with AIM, but this MXL 2 dash was an eBay score from years ago. It’s been sitting in my closet, waiting for its moment to shine. AIM makes motorsports grade hardware that can integrate with OEM systems, a beautiful thing. In addition to datalogging the OEM ECU, this will monitor brake pad temps, oil temp, oil pressure and gearbox temps!
Here we have our nifty, K-Type, brake pad thermocouple’s that we will use with our AIM MXL 2 Dash. This should give us accurate temperatures, helping to determine which pads are optimal and if they are being used in their optimal window.

I mentioned providing data to Hawk in exchange for the pads and this is how I will do it. Years and years back I stumbled upon a mislabeled and dirt cheap AIM MXL 2 dash on eBay that is able to read CAN data directly from the OEM Mitsubishi ECU. This includes wheel speeds, throttle position, steering wheel angle and much more! Additionally, the MXL 2 can datalog just about any aftermarket sensor at insane rates, so while it’s keeping tabs on the factory data, I am also going to use brake pad thermocouple sensors to measure temperatures. My goal is to ensure I am using the right pads, for the right job and at the right temperatures! I’ll send the info back to Hawk and their engineers can help me dial in the brakes better than I could with my usual guess and check methodology.

I went with a set of AMS Performance stainless steel brake lines for one major reason. For the front calipers, they don’t replace Mitsubishi’s design that includes a hardline attached to the strut and upright. This hardline connects directly to the caliper. Going this route does add one failure junction that doesn’t exist on other companies’ lines, but there are benefits, which include less flex and the line is less likely to catch on any assemblies while moving.


  1. Where are the thermo-couples placed? I’ve always used temperature paint on the rotors to help select brake compounds.

    1. The thermocouples will fit into a small hole drilled into the brake pads. They sit just below the surface of the pad.

  2. What is the part number for the Brembo hardware? I am going to do this on my GSR, so thank you for the guidance!

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