Stainless Steel Larini "Club Sport" Exhaust System from the UK
Nice stainless steel pipe that begins just after the factory catalytic converter
Aligning the Larini exhaust tips
Steve gives a final quality check
I hope to film a clip comparing the sound of the John Cooper Motorsport 225 HPD kit that is installed on my car with the Larini. So far I'm a bit envious of the Larini's wonderful sound...
The second item to install was an Alta 15% reduction pulley, a quick and safe way to get a major boost in horsepower from the stock Cooper S supercharger. This modification along with the Larini exhaust and the already installed ProMINI cold air intake really gave the British Green MCS a shot of serious horsepower. Steve commented that the car was very strong as a stock car and the modifications made a strong car a lot stronger and even more satisfying to drive.
Stock pulley ready for removal
Alta 15% reduction supercharger pulley
Stock pulley removed and shaft ready for Alta installation
Tightening the Alta pulley
Fitting the supercharger drive belt on the Alta pulley
For more click on this link: Alta MINI Performance
I haven't quoted any horsepower gains but I think it is a safe bet that the three "traditional" safe modifications should yield 20-25 horsepower easily but probably even more. Significant numbers I'd say...