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When I first bought my Clio MK1 172, accelerating gave me a nice swoooosh kind of sound. Now when I accelerate it's more of a grunt even thought i've made no mod's to exhaust or what not. The engine just seems to be growling more than the nice swooosh sound. Anything wrong or completely normal...

Thanks, I am planning to do other things but all in good time. I'm not going to throw thousands at the car straight away. I decided to start somewhere and wanted to start here. HillPower are fairly local to me, i'll try them.

I've got the one from k-tech as its silenced and would prefer that. Anyone had the inlet manifold polishing done to their car? How long does it take to do? I do know a few mechanics who would do it for me but do you need to know specifically BenR's knowledge on the 172 engine or can any...

Where did you get the devil de-cat pipe from?

The de-cat pipe on http://www.k-tecracing.com/show_product.asp?id=1564 is the one you have? I take it by the words "direct replacement" it would be bolt on and I would need to take it off for MOT and put old CAT back on?

I have PM'd him. Any other ideas? Where about's is he based? Would a port and polish of the stock heads give much power gain? How much are we looking at? I was getting an Xbox 360 for xmas with this money but play.com are still out of stock and I can't be bothered to wait any longer. Would...

How do? £350 to spend on mod(s). Give me some ideas. I've replaced induction kits, exhausts on old cars. Rather boring...:sleepy: Must be engine performance related mod's only. Oh yeah the car.... Clio Sport 172 MK1 stock.:cool: