172 cup trackday
Ok, i have a clio 172 cup on an 03 plate, and a friend has a 172 cup on a 52 plate, he is a mechanic so we decided to change the timing belt, water pump and tensioners yesterday, whilst changing them we noticed that underneath the inlet manifold his one had an oval shaped flute coming from the plate attached to the rocker cover, going into the inlet manifold, whereas mine had a flat plate attached to the rocker cover with a hole matched with the one on the inlet.
Is this a diy mod somebody has carried out ?, what are the benefits ?(if any)
Cheers
Paul
Is this a diy mod somebody has carried out ?, what are the benefits ?(if any)
Cheers
Paul