How Much Power Does a Remap Add?

It's the first question almost everyone asks: how much power will a remap actually add to my car? The honest answer is that it depends on your exact engine, but on a custom, dyno-developed Stage 1 map, the gains are bigger and more consistent than most people expect, especially on turbocharged BMW and VAG engines.

What affects the gains

Two identical-looking cars can gain very different amounts. The biggest factors are:

• Turbo vs naturally aspirated, turbocharged engines (almost every modern BMW and VAG diesel and most petrols) respond far more to tuning, because we can safely raise boost as well as optimise fuelling and timing.
• Diesel vs petrol, diesels typically see huge torque gains (great for real-world pull and towing); petrols gain strong power higher up the rev range.
• Stage, Stage 1 is software only; Stage 2 adds supporting hardware for bigger numbers.
• Engine health, a well-maintained engine makes the most of a map, which is why we health-check every car before tuning.

Typical Stage 1 gains

Here are realistic Stage 1 figures for some of the BMW and VAG cars we tune most often, all developed and proven on our in-house 4WD dyno:

These are typical figures, your exact gains are confirmed on the dyno with a before-and-after printout, and your original file is always kept so it stays fully reversible.

See your car's numbers

Want your specific figures? Use our free power checker, pick your make, model and engine and you'll see the expected Stage 1 and Stage 2 gains instantly. Or get a free quote and we'll advise on the best setup for your exact car.