How much power, which parts, and where to buy them.
Every car on this sheet gets the same four stages: software, breathing parts, a bigger turbo, and a built engine. For each stage I list what the tuners claim, the parts you actually need, and the brands that make them.
No guessing and no made-up dyno numbers. If a figure is on this site, it comes from the company that sells the tune.
The sheet
| # | Generation | Engine | Stock | Stage 1 | Stage 2 | Stage 3 | Stage 4 |
|---|
Nothing matches that yet. Cars are added every week.
Peak horsepower as claimed by the tuners, on the best fuel each tune supports. Stage 4 is a typical built-engine range.
The four stages
- 1Software
A new file on the factory ECU. No parts. Usually the biggest gain per dollar.
- 2Breathing
Downpipe, intake and intercooler, plus a tune written for them.
- 3Bigger turbo
More boost on the stock engine, up to where the internals are still happy.
- 4Built engine
Forged rods and pistons, a big turbo, a fuel system and a custom tune.