You say it has ALL the JCW
badges, does that include 3 badges under the bonnet (intercooler cover, engine plate and airbox) JCW
exhaust with JCW
logo on the tail finishers. If it has all of those but is a replica it's very likely to also have a reduced super charger pulley as well which would make the same sort of power as a JCW
anyway. Unless it's a Cooper S with a JCW
airbox and exhaust and no other mods, you are down on power and you need to find out why.
Did you get a print out? What fuel were you using? How well has it been maintained? where did you have it done?
A print out is needed to really see what is going on, ideally with AFR data
Fuel is important, JCW
models will never made their advertised figure on 95 octane, they often struggle even with something higher.
Maintenance is very important OEM service schedule keeps the car on the road but not performing at it's best.
For comparison, i had my Cooper S fitted with a JCW
airbox and exhaust, maintained it well, had it health checked and a 15% pulley installed and it ran 184whp which is more than a lot of stock JCW
ever run and is 30.5 more than you and it's done over 70k miles
Where did you take it to be tested? if you took it to a mini specialist they should have been able to tell you there and then if it was a genuine JCW
, they would have been able to diagnose a lot of common faults just from looking at the graphs.
You should probably, post up your dyno print out, put in a couple of tanks of v-power, change your plugs unless it's had an inspection II in the last year or 2 at the most, change the air-filter for a reusable one and check the coil terminals for corrosion and clean them up or replace it if needed. If it does not feel a huge amount quicker, get it booked in to a mini specialist for a dyno health check, or if you don't do DIY then just do that straight away.