Audi Q7 ECU Remapping & Engine Tuning

Which Q7 engines gain the most?

Most of the Q7 engines we list are diesels, and among them the larger engines gain a smaller share. The first-generation 3.0 TDI V6 at 240 bhp goes to 294 bhp (+22%), while the 4.2 TDI V8 starts higher and gains a smaller share: the 326 bhp version goes to 374 bhp (+14%) and the 335 bhp version to 376 bhp (+12%). What the V8 gives you instead is torque, rising from 760 to 874 Nm on the later engine, which matters most when the Q7 is loaded or towing.

The 4.2 TDI itself changed in 2009, from a single-stage turbo at 326 PS to a twin-turbo at 340 PS. Our remapped figures for the two versions end up within a few bhp of each other, so the later engine’s head start narrows after a remap.

In the second-generation Q7, the supercharged 3.0 TFSI petrol (2016–2019) goes from 329 to 387 bhp (+17%), and the 3.0 TDI at 268 bhp moves to 314 bhp (+17%). The turbocharged 55 TFSI petrol that replaced the supercharged V6 in 2019 is listed, but our figures for it are still in development.

Q7 generations we cover

The first-generation Q7 (Typ 4L, November 2005–2015) is a five-door SUV on a modified version of the VW Group PL71 platform. Its range is unusually wide: a supercharged 3.0 TFSI V6 from 2010, a naturally aspirated 4.2 FSI V8 (2007–2010), and 3.0 TDI V6, 4.2 TDI V8 and 6.0 V12 TDI diesels. The V12 (2008–2012) is a twin-turbo 500 PS engine.

The second-generation Q7 (Typ 4M, May 2015–2026) moved to the MLB Evo platform. Its diesels are 3.0 TDI V6s: a 218 PS ultra and a 272 PS version up to 2018, then the 45 and 50 TDI from 2019 at 231 and 286 PS. On the petrol side the 3.0 TFSI changed from supercharged (EA837, 333 PS) to turbocharged (EA839, 340 PS) in 2019.

Last updated 19 October 2026