Yeah the Wilkenshaw definatly whines you would know it if one of them was next to you.

I'm still skeptical with the pully, but I'd love to get the SL 55 intake, I'll just have to find one at a Mercedes wreckers otherwise I wouldn't even dare ask for a price of a new one. If I get my hands on a SL55 intake I think I'll get a powerchip tune and take out my rear cats and resonator and it should make a good difference!

135i would be quicker then the 335i? or not really?