Bootmod3 Stage 1 & Stage 2
bootmod3 Stage 1 and Stage 2 tunes for B58, N55, S55 and B48. Stage 1 runs on stock hardware; Stage 2 builds on a downpipe and intake. Every file is calibrated to your car, not pulled off a shelf.
Stage 1
Stage 1 is a software-only tune for a standard car. We recalibrate boost, timing and fuelling around the factory turbo and exhaust to get the most out of the hardware you already have, safely. It is the natural first step for almost every owner.
No parts to buy beyond a good service and decent fuel. You keep full driveability and can return to stock at any time.
What changes
Recalibrated boost, timing and fuelling on the stock turbo
Optimised throttle response and pedal mapping
Raised limiters where it is safe and sensible
Smoother part-throttle and a stronger mid-range pull
What you need
Stock turbo, stock downpipe and stock intake
A healthy engine on a fresh service
A bootmod3 licence and the correct adapter for your car
Good fuel: 98 / 99 RON or the highest available locally
Stage 2
Stage 2 is calibrated for a car with supporting hardware fitted — primarily a downpipe, usually with an intake. With the exhaust freed up, we can run a more aggressive strategy and ask the turbo for more, which is why Stage 2 sits above Stage 1 across every engine.
Fit the parts first, then come to us for the calibration. On higher-octane fuel or E-blends, where supported, Stage 2 has even more to give.
What changes
A more aggressive boost and timing strategy for fitted hardware
Calibration matched to your downpipe and intake
Higher airflow targets the stock map cannot use safely
Headroom for E-blends or higher-octane fuel where supported
Hardware it needs
A catless or high-flow downpipe (the key Stage 2 part)
An aftermarket or high-flow intake
An uprated intercooler or charge pipe on harder-worked cars
Everything from the Stage 1 list, in good order
By engine
The figures below are deliberately described rather than promised. Real gains depend on your exact engine, fuel, hardware and conditions, so we confirm numbers against your specific car. The pattern, though, holds across the range: Stage 1 makes a real difference, and Stage 2 builds on it.
B58
The B58 is one of the strongest responders to a bootmod3 tune. Stage 1 transforms the car on the stock turbo, and Stage 2 with a downpipe adds meaningful top-end. Later B58TU engines respond especially well.
N55
The single-turbo N55 takes well to bootmod3. Stage 1 sharpens response and fills in the mid-range, while Stage 2 with a downpipe helps the car breathe and hold boost higher in the rev range.
S55
The twin-turbo S55 has serious headroom. Stage 1 wakes the car up considerably, and Stage 2 with downpipes and an intake — particularly on higher-octane or E-blends — is where the platform really comes alive.
B48
The four-cylinder B48 is often underrated. Stage 1 makes a real difference to how the car drives day to day, and Stage 2 with bolt-ons pushes things further while keeping the engine well within sensible limits.
Not sure which engine code you have or which stage suits your goals? Browse our bootmod3 tunes by engine or by model, and we will point you to the right setup.
What you get
A bootmod3 stage tune from us is more than a file. It is a calibration built for your exact car, checked against real data, and backed by support when your setup or fuel changes.
A calibration matched to your exact engine, gearbox and hardware
Files developed and proven on real cars on our in-house dyno
Custom map adjustments for fuel, climate and your setup
Datalog review so the tune is checked against real running data
Ongoing support and revisions as your build or fuel changes
Honest advice on the right stage for your goals and budget
New to the platform? Read what is bootmod3, or check bootmod3 pricing and how the licence and adapters work.
On bootmod3 — Stage 1 or Stage 2
Tell us your car, your current hardware and what you want from it. We will confirm the right stage, indicative figures and the licence or adapter you need, then get you booked in.
Get a quotePrefer a different platform?
Running an older N-series engine, or just weighing up your options? We also offer MHD Stage 1 and Stage 2 tunes, with details on the adapter, licence and supported engines and models.
WhatsApp SamuelFAQ
Stage 1 is calibrated for a stock car — no hardware changes beyond a good service and fuel. Stage 2 is built for a car with a downpipe and usually an intake fitted, so we can run a more aggressive boost and timing strategy that the stock exhaust would not support safely.
Yes. A catless or high-flow downpipe is the defining Stage 2 part. It frees up exhaust flow so the turbo can spool and hold boost more effectively. We usually pair it with an intake, and on harder-worked cars an uprated intercooler or charge pipe.
Gains vary with your exact engine, fuel, hardware and ambient conditions, so we quote real figures against your specific setup rather than promise a single number. As a guide, B58, S55, N55 and B48 all see strong, usable gains, with Stage 2 and higher-octane fuel adding more again. Message us with your car and goals for an indicative figure.
Our calibrations are developed and proven on real cars on our own dyno, and we review your datalogs before signing off. bootmod3 is a flash tune you can return to stock, and the licence stays with you — handy for service visits or selling the car.
A bootmod3 licence and the correct adapter for your chassis, a healthy engine on a fresh service, and good fuel. For Stage 2 you also need your hardware fitted first. We can advise on the licence, adapter and the right stage for your goals.
Want the full bootmod3 hardware kit too? Have a look in the shop.
In summary
