Found this review, posted today on Edmunds.com:

http://www.edmunds.com/new/2003/mini...ontent...MINI*

Let's REALLY motor!
q.

 

No mention of a remapped ECU...NEW super charger, NOT a pulley?

 

More information, Hope this helps.
Regards,
MOTOR'N

Thanks for your mail and sorry for the delay in our reply
Yes the replaced head is ported and polished and no the compression ratio remains the same on trhe S
The camshaft is also the same however the supercharger is the fifth generation with teflon fins and a faster pulley

For full details please see our website http://www.johncooper.co.uk

Best regards


JCW

----- Original Message -----
From: Ric Stofer
To: John Cooper Works
Sent: Monday, March 24, 2003 2:15 PM
Subject: Re:Works S

Good Day,
I am first on the list for the JCW S upgrade at my local dealer. I have read all the information I can find and I still have some questions.
Is the replacement head ported polished? Is the compression ratio changed? Do you use the standard camshaft or is that changed?
I know that the supercharger is replaced. Is the only difference pulley size or is there something different about the supercharger itself?
Any other information that you can share would be helpful. Thanks for the help.
Kindest Regards,
Ric

 

Sounds like a fancy way of saying they just changed the pulley!

 

Here are the e-mail dealings I have had directly with JCW.

> > ----- Original Message -----
> > From: "Randy Webb" <randy@mini5280.org>
> > To: <info@johncooper.co.uk>
> > Sent: Thursday, April 03, 2003 6:50 AM
> > Subject: John Cooper Works S
> >
> >
> >> I currently have a 2002 Cooper S, and was thinking of upgrading to the
> >> new JCW S.
> >>
> >> What is exactly included in the US version? There are rumors running
> >> rampant all over the internet and in press publications, but I wanted
> >> to hear it from the horse's mouth. I have heard anything from a
> >> reduciton pulley to a complete overhaul with a new supercharger and
> >> headwork with a new camshaft profile. Someone wrote that the kit
> >> included a 5th generation supercharger with a teflon coating, but the
> >> M45 Eaton on the standard S is a 5th gen supercharger and has a
> >> ceramic coating of some sort, right?
> >>
> >> I look forward to your response, as I eagerly await to place my order.
> >>
> >> Randy Webb
> >> Denver, Colorado, USA

> > The US market will have the same conversion as the UK, please see our
> > website http://www.johncooper.co.uk
> > Best regards
> >
> > JCW

----- Original Message -----
From: "Randy Webb" <randy@mini5280.org>
To: <info@johncooper.co.uk>
Sent: Thursday, April 03, 2003 5:46 PM
Subject: Re: John Cooper Works S
> Thanks you for your quick response, however, after reading your website,
> that is why I wrote to gain more information straight from you. The
> brochure is vague. Is the supercharger different? Does it use a
> reduction pulley to increase boost? Does the head include a new cam or
> valve sizes?
>
> Thank you again for your time, and again I look forward to your quick
> response.
>
> Randy

Thanks again,

Yes the supercharger does have a smaller pulley to speed it up and also has Teflon blades to make even more efficient.

The cylinder head is changed for a gas flowed polished and ported head
however the cam and valves remain the same.

A full brochure will be available from your dealer in early May but I hope
this helps

Best regards

JCW


>

 

Randy ,
Looks like they are on to us, you got no more information that I did.
They are getting 200HP with a pulley, exhaust,filter and p&ped head. They say they are doing something to
the ECU but it can"t be much otherwise they would be at least 220+HP. Looks like lots of room to play.
Regards,
MOTOR'N

 

>>Randy ,
>>Looks like they are on to us, you got no more information that I did.
>>They are getting 200HP with a pulley, exhaust,filter and p&ped head. They say they are doing something to
>>the ECU but it can"t be much otherwise they would be at least 220+HP. Looks like lots of room to play.
>>Regards,
>>MOTOR'N



It looks like the ECU's main change was to move the redline up.

 

An S with 200+ hp is going to need
bigger brakes. Another expense or is that
part of the package???

 

>>An S with 200+ hp is going to need
>>bigger brakes. Another expense or is that
>>part of the package???

I should add that mine is my daily driver and NOT a track car! (no yet anyway)