Hi all,
New member here. I just took possession of a new-to-me 2015 ATS 2.0T Premium with a 6 speed manual. Boy are those hard to find. In driving it now for a few weeks, I recall my old Audi 1.8T and and the rush that comes from a small turbo. But coming most recently from the high-revving Acura world, it's taking some adjustments. I presumed based on the torque band for this engine that redline shifts are not optimal. To prove that, I dug up my old spreadsheet I created to determine optimum shift points on that Audi and changed the relevant numbers (including the different tire sizes, gear ratios, and a 6th gear) to produce the attached acceleration force curves.
Each of the data points represents 500 RPM. You'll notice that in each gear, the motive or acceleration force falls below that of the next higher gear at the upper end of the RPM range. In first gear, only the 7000 RPM force point falls below the corresponding point on the 2nd gear curve. So it makes sense to shift from first to second at 6500.
Similarly, each of the 2nd and 3rd gear curves have two data points below the curve of the next higher gear. So in each case, the optimum shift points are at 6000.
Likewise, each of the 4th and 5th gear curves have three data points below the curve of the next higher gear. So in each case, the optimum shift points are at 5500. (assuming you would ever be traveling that fast).
If you want details on how I calculated these curves, ask away.
New member here. I just took possession of a new-to-me 2015 ATS 2.0T Premium with a 6 speed manual. Boy are those hard to find. In driving it now for a few weeks, I recall my old Audi 1.8T and and the rush that comes from a small turbo. But coming most recently from the high-revving Acura world, it's taking some adjustments. I presumed based on the torque band for this engine that redline shifts are not optimal. To prove that, I dug up my old spreadsheet I created to determine optimum shift points on that Audi and changed the relevant numbers (including the different tire sizes, gear ratios, and a 6th gear) to produce the attached acceleration force curves.
Each of the data points represents 500 RPM. You'll notice that in each gear, the motive or acceleration force falls below that of the next higher gear at the upper end of the RPM range. In first gear, only the 7000 RPM force point falls below the corresponding point on the 2nd gear curve. So it makes sense to shift from first to second at 6500.
Similarly, each of the 2nd and 3rd gear curves have two data points below the curve of the next higher gear. So in each case, the optimum shift points are at 6000.
Likewise, each of the 4th and 5th gear curves have three data points below the curve of the next higher gear. So in each case, the optimum shift points are at 5500. (assuming you would ever be traveling that fast).
If you want details on how I calculated these curves, ask away.
