Mini Cooper S / JCW R56 · N14 / N18
Mini Cooper S R56
N14 / N18.
The Prince 1.6 turbo — shared with the Peugeot 207/308 GT and the Citroen DS3 THP. Custom WinOLS calibration on our own rollers. We have not posted an R56 dyno sheet yet; the figures below are what this platform typically gives, and yours gets measured before and after like every other car that comes in.
At a glance
N14B16 / N18B16
Engine
175 HP (S) / 211 HP (JCW)
Stock Power
240 Nm (260 overboost)
Stock Torque
Twin-scroll turbo, direct injection
Induction
R55 / R56 / R57 / R58 / R59
Platform
Stages & pricing
Stage 1Most Popular
205-215 HP (S) · 235-245 HP (JCW)300-320 Nm
from €558 incl. VAT€450 excl. VAT
Custom map on stock hardware. Boost, timing and the overboost window rewritten properly rather than a generic file.
- +30-40 HP typical for the platform
- +60-80 Nm
- Sharper overboost response
- Measured on our dyno before and after
- Stock file kept — reversible
Stage 2
230-245 HP330-350 Nm
from €682 incl. VAT€550 excl. VAT
With a free-flow exhaust and a healthy intake. Assumes the timing chain and HPFP are in good order — we check before we map.
- +55-70 HP over stock
- Full dyno calibration
- Hardware condition checked first
Questions
Is my R56 an N14 or an N18?
Roughly: Cooper S and JCW built up to 2010 are N14, from 2011 on they are N18. The N18 got a revised timing chain and a different high-pressure pump — the two are not the same to calibrate, which is why we ask for the VIN first.
My engine rattles on cold start. Should I map it?
No — fix it first. That rattle is the timing chain tensioner and it is the known weak point of this engine. Mapping a car with a stretched chain does not cause the failure, but it will not postpone it either, and nobody wants those two events in the same week.
Same engine as the Peugeot 207 GT?
Yes. BMW and PSA built it together — it is the EP6DT in a 207 GT, a 308 GT, an RCZ or a DS3 THP, and the N14 in a Mini. Same block, same weak points, and we map all of them.
Direct injection — do the valves carbon up?
They do, on every engine of this family, because no fuel washes the back of the intake valve. It is not caused by tuning and it is not fixed by tuning; it is a walnut-blast job at intervals. Worth knowing before you buy one, not a reason to avoid the car.
Ready when you are
Let’s build it.
Send your car and goal — Yiannis comes back with an exact plan and price, in the shop or remote worldwide.