On the extremely modified end, this typically permits APR to make turbo upgrades operate without the necessity for external manual controllers. For the subsequent step in incresed energy, APR Stage II ECU Upgrade is on the market for use with APR’s Supercharger Drive and Crank Pulley upgrades. While these default settings may be the best generic setting on your vehicle overall, they might not be the most environment friendly settings in your specific necessities. For example, if you’d like extra efficiency, an ECU remap can change the gear ratios, air/gasoline ratios and fuel move of your automobile’s powertrain to spice up energy, normally at a sacrifice of gasoline effectivity. If you have replaced some other components in favor of excessive-performance components in your automobile, like a performance exhaust, for example, you might also want to have your ECU tuned to fit the brand new mods.