RSTuning
Active Member
This 265 was brought in for a tune after the hybrid turbo failed on track and was replaced with a new core. The turbo company said the failure was over speed and looking at the attached log it's likely down to asking way too much boost at high RPM! (1.88 bar at 6500 RPM). The previous tune made 359hp which was the claimed power (well 360hp) so that's all good on paper but thats where the goodness ends! This car is lucky the rods are still inside the block! The timing was WAY too high, causing constant knock correction. Great for getting the most power it seems but not great for anything else. At 6100 RPM where you can see the big dip in the red power graph the knock control had to pull 4 degrees of igniton from the requested as it knocked badly! The AFR wasn't too far off but too rich coming onto boost (10.8 AFR) again rich in the midrange and about right high up. Not quite sure how though as the fuel target maps look like a mountain in the midrange! (around 18% added in the midrange from stock and -5% higher up) These are an actual target, so should be nice and smooth if you want a steady AFR! As you can see from the before and after the car is now making slightly less power and torque but it's running 0.2 bar less boost, hitting the requested target torque/boost and has no knock correction after 4 consecutive pulls on the dyno. In places we have up to 6 degrees LESS ignition advance compared to the previous tune, but as we're not bouncing off the knock control all the time the graph is smoother and engine much more likely to survive! All this tune does is show a complete lack of understanding of exactly how this ECU works. We often see people complaining online that we don't spend as much time on the dyno with a car compared to X and that others spend ages fine tuning, so it must be better right? WRONG. Once you have your base calibration built (correctly) it doesn't actually take long at all to make it suit another car with the same mods. All you should really be doing is fine tuning base tables such as ignition advance, WGDC and sometimes the fuel VE maps to suit different bolt on bits. If however you don't actually fully understand how the ECU works, it's going to take you 10x longer to get the job done and make you look like a complete legend because it took you so long! We first logged this car at 09.48am on the previous tune we then upgraded the ECU to run the 275 Trophy R calibration and mapped it SAFELY to suit the mods fitted. This took us up to 11.24 am and we were happy the calibration was done correctly and the car wasn't going to explode!
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