Hi, after owning my clio 182 cup for 7months now i am wanting to gain some more power. I need to ask you guys afew questions as ive not got alot of knowledge on the car. At present i am running a miltek cat back with decat pipe. First question is will i gain sound difference and air flow through buying a stainless 4-2-1 tubular manifold im not sure if the stock one is 4-2-1 already??. Secondly im looking at buying port and polished inlet and a 65mm throttle boddie and then taking it to rs tuning to see if they can get a good map on the car. Feedback will be appreciated. Many thanks, Jack