Stage 1 vs 2 vs 3: choosing honestly
Stages are shorthand for how far past stock you are. Match them to the hardware you actually have — the log does the rest.
A stage number is a conversation shortcut, not a spec sheet. The honest question is never "what's the biggest stage?" — it's "what does my car actually have?"
You'll see tunes sold as Stage 1, Stage 2, Stage 3+. The numbers are shorthand for how far past stock you're going — roughly, how much supporting hardware is on the car and how much headroom that unlocks. They are not a promise, and they are not interchangeable between cars.
What the stages mean here
| Stage | What's assumed | Fuel note |
|---|---|---|
| Stage 1 | Stock turbo and downpipe; bolt-ons okay | Stock turbo happy — a calibration for the parts already there |
| Stage 2 | Downpipe upgrade + tighter boost control | The supporting flow to run a firmer target |
| Stage 3+ | Upgraded turbo | Logs first, always — hardware leads, the tune follows |
Stage 3+ is where the honest sequencing matters most. An upgraded turbo changes the flow characteristics of the whole system; a calibration for it should be built from logs of that hardware in your car, not guessed from a generic file. We build it with you, not for a spec sheet.
The honest numbers
Whatever stage you pick, the boost target you set lives inside a safe envelope bounded by your platform and your fuel. These are the envelopes the configurator will tune within:
| Fuel | N54 | B58 |
|---|---|---|
| 93 Pump | 12–18 | 14–20 |
| E30 Blend | 16–24 | 18–25 |
| E50 | 18–27 | 20–27 |
| E85 | 20–30 | 22–30 |
How to choose
- Match the stage to the hardware you **actually have** on the car today — not the build you're planning.
- Fuel is half the decision. The same car runs a different safe target on 93 than on E50.
- If you're near a hardware limit, fix the hardware first — an intercooler or a charge pipe buys more than a boost number ever will.
- Then flash, log and let the revision loop do its work. Stage is the starting line, not the finish.
What is the difference between Stage 1, Stage 2 and Stage 3 tunes?
Stages are shorthand for how far past stock you are. Stage 1 assumes a stock turbo and downpipe with bolt-ons okay. Stage 2 assumes a downpipe upgrade and tighter boost control. Stage 3+ assumes an upgraded turbo — and is calibrated from logs of that hardware in your car, never guessed from a generic file.
Which stage should I choose?
Match the stage to the hardware on the car today, not the build you're planning. Fuel is half the decision — the same car runs a different safe target on 93 than on E50. If you're near a hardware limit, fix the hardware first: an intercooler or a charge pipe buys more than a boost number ever will. Then flash, log, and let the revision loop do its work.
Is a higher stage tune more power?
No honest tuner quotes a horsepower figure before seeing your car, your fuel and your log. A stage sets where your boost target starts inside a safe envelope — for example 12–18 psi on 93 pump for an N54, up to 20–30 on E85. How far your engine runs within that envelope depends on fuel quality, intercooling, charge piping, hardware age and heat. The datalog settles the argument.