Hi all so as you no I have a wepr ramhorn fitted to my forged build I made 297.5 bhp at the fly couldn't get any more due to something restricting flow possibly the manifold or down pipe. I say this because a friend of mine has the exact same set up on a forged glanza aswell and he is currently having the same problem. something is restricting flow. Would the reducer on the down pipe in the picture below cause this problem? Just for both of us having the same problem surly it's manifold or down pipe related. Cheers nick