cheers roy its weird as ive already had the k&n on it for long enough,but when i took the old tbh off there is a channeled grove on the upper inlet manifold where the gasket sits against the grove has three slots and these were blocked so i cleaned it up put it all back together,took it for a spin the throttle is much more responsive the grunt even louder and you just need to touch the pedal and your off at some rate and i can feel the secondries opening up more noticably now.and the the lower end acceleration has improved massively delighted with it,and better late than never lol