Project SC300 Road Racer: Part 17 - Get out there! Or not...

by Erik Jacobs

With the car idling and most of the core sensors configured, we needed to keep moving forward in our electronics configuration in order to get to a point where we could actually drive the car. Technically we could drive the car right now, but without a functional dashboard that wouldn't be a very good idea - it's kind of hard to drive with a laptop in your... lap.


The RaceCapture application runs on most computers as well as mobile devices.

The RaceCapture application is also what is used to configure the device. Our original intention was to put the RaceCapture/Pro MK2 between our dashboard and our ECU to massage information coming in via CAN and to retransmit it later. We will end up still running the ECU to the RaceCapture, but we will also run the ECU directly to the AEM CD-7 dash as well. We’ll get to that in a moment. The RaceCapture is also going to serve as our speedometer (via the GPS).


The RaceCapture app is also designed to serve as a live, customizable dashboard that can display real-time data as well as handle predictive lap timing duties.

It has various gauge screens, tachometer screens, and other screens that can all be tailored to your needs. Newer RaceCapture models have Bluetooth and/or WiFi embedded. With the MK2 and a Bluetooth module, you can pair a tablet and use it as a dashboard. In our case, however, we’d be using the AEM CD-7 with the RaceCapture serving as our logger.

Just like with the Elite 2500 ECU and the Smartwire, the first thing we did was make sure we had upgraded to the latest RaceCapture firmware. The RaceCapture/Pro MK2 can actually be powered directly by our laptop’s USB, which can make things a little tricky when you are trying to power cycle the device and forget it’s still powered by the USB after you shut the car completely off.


We need to tell the RaceCapture what CAN channels to pay attention to.

The Autosport Labs RaceCapture can read whatever CAN channels you want. But you have to tell it which ones to care about. Tell the RCP what the baud rate (1M[egabit] for Haltech) is on which CAN channel (we’re using CAN bus #1 as the input from the Haltech) and then start configuring mappings.

RaceCapture provides some built-in presets to get you started (as you can see here). If you ask Haltech for the CAN broadcast protocol, they’ll send you a PDF which tells you what CAN channel and other information corresponds to which data value.


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Tuesday, June 05, 2018 7:49 PM
Awesome! Please don't skip out on any updates for 4+years ahem****miatabuasa couch cough team America GTR
Tuesday, June 05, 2018 11:33 PM
Yeah, those gearbox dont work much. The one that does ( R154) is expensive second hand and still tend to kill its synchros at higher power (800+ ). depending on the money and rules you need to follow, would you consider a straight cut dog box set for yours ? It has to exist :D I know PPG makes some for the R154 for example.
Tuesday, June 12, 2018 6:08 AM
@theneil there will be many, many updates. We are already working on the transmission replacement and hope to be back on track this week (literally -- at Road Atlanta) and we'll have an update on the transmission we chose and the installation.

@Crousti I considered another W58, an R154, a V160, and other options like the 350Z transmission and even the T56. You'll have to wait for the next article update to figure out what we chose!
Wednesday, June 20, 2018 8:49 AM
I was beginning to wonder if this was going to remain a project that never/rarely saw the track. Glad to see that's the 1st place it went once tuned. Where will you end up classed? ST2/ST3?
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