V8 GT86 Crash, Driver Controls & Race Day Telemetry | Today At HPA 221 [UPDATE]

HPA86: In the V8 1uz powered GT86 we’ve upgraded the steering wheel with driver controls and buttons via precut carbon fibre template. The driver now has the following functions:

Pit limiter: There is a 40kph limit here in NZ
Horn: Required for road legalities
Alarm and fuel reset: Resets driver warnings on the dash display with a press, and a hold will reset the fuel calculations after a pitstop.
Traction Control
Launch Control
Scroll/Page: Controls the MoTeC dash display
Radio button
Lights: If we’re ever fast enough to catch up to some traffic, flashing lights will be handy

It can be hard to find switches that don’t have too many adjustments as realistically for traction and launch control 10-12 are not needed, so we’re very happy with the 4 (even if we had to solder them) setting options for dry conditions, rain, heavy rain etc. The traction control via the MoTeC ECU also uses a modifier for the higher gears as what can be an acceptable and controllable percentage of slip in 1st or 2nd gear at 50-90kph will be quite a different story in 6th gear at over 200kph, so it’s helpful to be able to dial things back where required and keep the car pointing where it should.

We found a great product from EcuMaster which has helped keep the wiring side of this setup simple with everything going to an EcuMaster CAN switchboard that then only requires 4 wires to be used in the ‘curly cord’ keeping the diameter down and setup simple. The switchboard is 25mm square, takes up to 8 switch inputs, 8 analog voltage inputs, 4 low side outputs (for low current devices like LEDs for driver indication), +5V output for powering rotary switches, sensors and potentiometers and as mentioned above just 4 wires which are CAN high, CAN low, power and earth.

This unit communicates with our C125 dash which in turn relays the information to the M1 ECU. While you can set this up to communicate directly with your ECU, it really is much harder than going via a dash and not something we would want to spend the time on for no real advantage given how easily the C125 will convert the information into a format the M150 can understand and control. The finishing touches were a few driver warnings, namely for the pit limiter feature and also setting up the traction and launch control settings to display and correspond to the switch.

Side intrusion bars were also added but were not required this round as someone decided to keep things interesting and rear-end the car instead which luckily didn’t do too much damage to the car or anything at all to the new dry break refuelling setup.

RACE DAY: We go through a bit of the data (sorry about the audio issue there) and talk about the 3g MoTeC i2 telemetry system used which saw Andre being able to help Ben see where he was losing some time during practice and gain more confidence to push the car harder.

VIDEO UPDATE: The Hayabusa V8 video where we speak to James from RPE has gone nuts by HPA standards, cheers for the sharing team! If you haven’t seen it already, you can find the link below.

WEBINAR: This video is the weekly update we give before the members-only lesson that is uploaded to the HPA website. For more info, hit the Gold Membership link below, or click it even for better results.

221 | Save Your Engine With Driver Warnings: A lot is going on in a modern high-performance engine and it’s all but impossible for the driver to watch an array of gauges to keep an eye on engine health. In this webinar, we’ll look at some of the ways we can incorporate smart driver warnings on an aftermarket dash logger to help bring the driver’s attention to a potential issue before it’s too late. For this webinar, we’ll be using the MoTeC range of dash loggers.

Want to watch the members-only webinar on idle tuning along with over 210 other lessons on engine building, tuning, and wiring topics? Sign up here for only $19 USD a month, start and stop at any time (unlike your gym membership!).


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