Richard82 - Something like a pully does increase wear on an angine. Modern cars are build for reliability, well for the first 3 years while the warrantee exists anyhow
The mods we do can reduce longevity, can increse emissions and can increase fuel use. BMW want to avoid these things for number of reasons most are due to EU regs on factory cars, producing a mass appeal car (not everyone wants a mega loud sports manifold blaring through the cabin
) and making cost savings on warrantee work. However the other reason BMW don't do them on the standard car is because if they did where would they go with the JCW
or GP?! If you look at it like this...JCW
or GP has a 14.5%ish pulley reduction, increased intercooler, supercharger, airbox and map then so can any S. My philosophy is that if its OK on the JCW
, a similar and well made part will be ok on my S.
Futureal33 - EssentialMINI.co.uk are an MTH supplier, or used to be and are UK based and centrally located somewhere in the Midlands. They can do the work or supply you with the kit to do it at home with your laptop/computer.
GTT often leave your stock map on the car. GTTs car runs about 260-270 and still has a stock ECU/Map. If your cars map is not right they will reflash a new stock map or, and I think this is true, fit an MTH one to improve things for you (They only charge you for it if its nessesary and your map was not going to be up to the job). Lohen do 2 bluefins. One is a standard bluefin (adds 8hp to an S) the other is a special one designed for use with thier packages (It take into account the 15% reduction pulley and some of the other stuff like manifolds and airboxes that they do) and so supplies a bigger power improvement over just the parts or a normal bluefin remap.
GTT are excellent, especially if you have not had to have your car remapped. They use thier own pulley (which has been praised no-end on MINI2 and other sites). I believe which I think is a 17% reduction. Lohen fit a 15% Alta pulley (The Alta is a tried and tested and very popular choice, I even know a MINI tech who has used it as an alternative to a JCW
one on his own car).
Lohen kit - £675 inc VAT and fitted = 210BHP
- Superchips Bluefin with custom Lohen map
- Alta 15% Reduced supercharger pulley (JCW
is 14.5% ish)
- Reduced supercharger belt
- Pipercross Air filter
- Denso Iridium spark plugs
GTT kit - £675 fitted but need to add VAT = 210BHP
- Ecu reset (Not new aftermarket map)
- Optimised bypass valve
- Iridium sparkplugs
- GTT supercharger pulley (17% I think)
- Shorter 'stickier' drive belt
- GTT twin bearing idler pulley
- Performance panel filter
Your call..but its a difficult one. At the end of the day cost and distance to travel for fitting might make your mind up ...Lohens is simple enough to fit at home from what I hear, not sure on the GTT one.