OpenFlash Performance
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Greetings,
It didn't take us long to start digging into the ECU on our now 2 day old Supra. The same night we picked it up, we read out the ECU calibration and started to work on an ECU tune. The Supra shares the same ECU hardware (Bosch MG1) as some other cars that we are very familiar with (F90 M5, Lambo Urus, etc.) so putting together a test tune file was straightforward. The next day (yesterday) I ran some baseline pulls on the dyno to see just how much more power the 2021s are putting down and the results were right in line with what Toyota claims. So just before calling it a day, I decided to give our very-early-in-development not-even-beta tune a few runs for the sole purpose of gathering some engine data.
There is only about 25min of development time in this tune so by no means will it represent anything close to final calibration. All I did was alter load targets. No changes to fueling targets, ignition advance or limiters. So basically I just tested the response of the boost control logic, nothing more nothing less. And thankfully the outcome was in line with expectations. More hp/torqe everywhere but with some knock retard between 5000 and 6300rpm. This explains the "flat" power curve above 5500 and then how it ramps back up at 6500rpm. Currently in the process of defining all the relevant ignition timing and fuel tables to allow for actual tuning during our first dyno tuning session. When properly tuned, that flat spot should fill in nicely and pick up some decent peak power. But off to a promising start.
On this dyno, running 91oct California fuel, typical power numbers of custom tuned 2020 cars are in the 395-400whp range. So it seems quite likely the 2021 should be easily able to match or exceed that with a very conservative off-the-shelf calibration. Now I just have to make that calibration which means a lot of dyno tuning time and then plenty of road/track testing. This is always the fun part of new car development
It didn't take us long to start digging into the ECU on our now 2 day old Supra. The same night we picked it up, we read out the ECU calibration and started to work on an ECU tune. The Supra shares the same ECU hardware (Bosch MG1) as some other cars that we are very familiar with (F90 M5, Lambo Urus, etc.) so putting together a test tune file was straightforward. The next day (yesterday) I ran some baseline pulls on the dyno to see just how much more power the 2021s are putting down and the results were right in line with what Toyota claims. So just before calling it a day, I decided to give our very-early-in-development not-even-beta tune a few runs for the sole purpose of gathering some engine data.
There is only about 25min of development time in this tune so by no means will it represent anything close to final calibration. All I did was alter load targets. No changes to fueling targets, ignition advance or limiters. So basically I just tested the response of the boost control logic, nothing more nothing less. And thankfully the outcome was in line with expectations. More hp/torqe everywhere but with some knock retard between 5000 and 6300rpm. This explains the "flat" power curve above 5500 and then how it ramps back up at 6500rpm. Currently in the process of defining all the relevant ignition timing and fuel tables to allow for actual tuning during our first dyno tuning session. When properly tuned, that flat spot should fill in nicely and pick up some decent peak power. But off to a promising start.
On this dyno, running 91oct California fuel, typical power numbers of custom tuned 2020 cars are in the 395-400whp range. So it seems quite likely the 2021 should be easily able to match or exceed that with a very conservative off-the-shelf calibration. Now I just have to make that calibration which means a lot of dyno tuning time and then plenty of road/track testing. This is always the fun part of new car development
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