Tuned 31 January 2017
Bathurst: 2:28.0
Gears
- Set Final Drive.
- Set top Speed
- Set ratios.
Not a car for beginners, will require the use of opposite lock and brake/throttle modulation.
Shift at 7100RPM.
This 450pp tune is over a whole second faster than any other 450pp tune I have at Bathurst, so I will elaborate a little on the process of tuning this.
A lot testing went into gears and power parts. Right now it has every part to increase RPM, but the car doesnt perform well in the higher RPM's, it's a luxury to be able to have a nice short 5th gear and still be able to reach a good top speed. Isometric Exhaust Manifold was fitted so that peak power is available all the way to the end of the RPM range. This might be slightly harming performance for most of the lap.
I knew right from the start that this would be a bad car for tuning out oversteer, so Increased Rigidity and high values for LSD were used right from the start. I had a preference to not use too much balast too far forward to tune out oversteer. The LSD initial value was the last setting I tweaked and it made the car more controlled and I found a lot of time. It might have been something like 25, and I went to 40 or higher, then dialled it back to 38. So the Initial setting reduces oversteer when coming off the throttle or brake. Toe values were always high as well.
Other settings were not adjusted so much, so there may be more speed to potentially find from the car. But I have been tuning car after car after car at 450pp for Bathurst, so I know I'm fairly close already at aproaching peak performance.
Looking at the data logger, this tune has slightly worse handling but much better straight line performance compared to another very fast tune I have.