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Got my TUNE!!!
So stoked on it as well. . But I would like to explain everything first so that we don't get any keyboard warriors here haha
So to start with. All these figures are at the wheels. So by using a crank to wheel HP guestimator (Wheel Horsepower to Crankshaft Horsepower Guestimator this is a breakdown comparison.
Our car comes with 118kW at the crank from the factory. My car being around 60k km's I would have expected close to 5-10kW power loss. Using the guestimator you get around 100kW at the front wheels. My car dyno'd stock (with my custom intake) at 101kW at the wheels and 247Nm of torque, this is at 4700rpm and 2100rpm respectively.
The APR stage 1 tune claims 155kW at the crank which equates to around 132kW at the wheels and 320Nm. I am actually not sure how crank torque converts to wheel torque so I cant exactly compare APR in terms of wheel torque.
What I ended up with from the boys at Harding Performance:
Max power at the wheels is 121kW @ 5500rpm and 282Nm @ 2300rpm. As you can see the graph of the before dyno looks nothing like the APR before graph. This is because they smooth out the dyno. Our engines naturally produce a peaky output. The total power is around 10kW less than what APR claims but you could almost attribute this to the fact that it was 30 degrees today.
Anyways all in all the tune is amazing. The car pulls so much harder than it did before and the torque is across the whole rev range. Where the car used to noticeably start losing power around 4500rpm it now starts pulling like crazy at that exact point. Honestly even after you guys telling me how big the difference is I am still shocked.
Anyways have a look at the dyno graph and let me know what you all think.
Note the data points on this graph show the rpm with the greatest gains.
Originally Posted by Mk R
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