I've just sent him this, I can't wait for his reply
can you please explain how lowering the cross sectional area of the intake pipework with a 50 pence piece of aluminium (thus lowering the amount of air that can flow through it) can increase the amount of air entering the cylinders? also as you are claiming extra horsepower and better fuel economy can you supply the engine dynamometer printout to prove this? Thanks, Rob (An engineer and ex car mechanic)