APR APR ECU Upgrade - 3.0T TFSI - C6 A6 & Q7 - Simos 8.3 $649.95 APR is pleased to present the ultimate engine control unit (ECU) upgrade for the 3.0 TFSI! APR’s ECU Upgrades are the best dollar-per-horsepower modification one can make to the 3.0T engine. The upgrades dramatically increase horsepower and... Compare Add to Wishlist
