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Our beloved AEM Infinity is hidden well within the depths of the Professional Awesome Evo's dash, making it hard to clean or snag a picture of. We utilize AEM's provided USB drive to datalog any number of parameters on track or on the dyno. This information is easy to pull or monitor via the mini USB cable that can be seen attached in the foreground. We isolated the ECU from the chassis via the rubber mounts that can be seen which are attached to a fancy carbon fiber plate, because #racecar.The whole system is orchestrated by the AEM Infinity ECU that I have mentioned multiple times throughout the article. Pablo Mazlumian did a great job covering all the specific features of the Infinity in Part 6 of his Project E46 M3 article, so I will let you head there for deep details, but I will go into what makes it great for us. First and foremost, reliability, repeatability and consistency in performance. Once Tony Szirka with UMS Tuning dialed in the ECU on the dyno, the Infinity has flawlessly adapted to any situation we could throw at it.
Next to our Radium surge tank is our Zeitronix ethanol content/fuel temperature sensor. This is run on the surge tank's return line to the main fuel tank. The reasoning behind this is that if our Ethanol guage goes from 85% to say 10%, we know we need to get back to the pits immediately as the only fuel left in the system is what's in the surge tank, because none is going through the return. This is rarely an issue as we don't run the car for too many laps in one go, but a neccessary percaution when we ditched the OEM guage cluster, which just happened to include the fuel level.We made a custom harness to simplify all the factory wiring and used bulkhead connectors to allow for quick connect/disconnects to speed up serviceability at the track. The Infinity plays nice with our existing Zeitronix Flex Fuel sensor, allowing us to tune for varying levels of ethanol in the very realistic chance that what comes from the pump isn’t actually E85 (I’m looking at you Minnesota and your ethanol content of 30% from an E85 pump!).
After replacing the OEM gauge cluster, we switched to an AIM MXL Pista. This communicates via CAN with the AEM Infinity ECU, allowing all data to be datalogged alongside the GPS input that goes directly to the MXL unit. This has come in exceptionally handy as we monitor all the laps we've run over the years and keep track of what's improved and/or changed. The MXL has a built in temperature sensor to monitor cabin temps and when utilized with the notes we enter in after ever session, it's incredible how useful the data can be when trying to improve on a track we haven't been to in years.The CAN BUS system is to die for when it comes to datalogging at the track. We utilize an AIM MXL Pista dash and it communicates perfectly with the AEM Infinity. This allows for a heads up display of lap times and shifts lights, along with the ability to have warning lights pop up in the case of an overheating engine, low oil pressure, over boosting, ect… ect… A recent firmware upgrade has increased the amount of information that can be datalogged and we can’t wait to utilize the new features. The CAN BUS system also allows for future expansion of additional AEM products and we are looking squarely at an AQ-1 system so we can datalog a wider array of pressure and temperature inputs.
That’s the Professional Awesome Evo’s fuel system in a nutshell. Stay tuned as we get into the TRE Transmission drivetrain with Wavetrac upgrades as well as additional features of the vehicle that keep me alive in case of an unforeseen accident or run in with Tony Stewart!
