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Yes, although for the rpm range most road cars work at I doubt the 4-2-1 will restrict top end but it will help mid range. That's why I'm tempted to change but are the gains worth it. Renault obviously thought it was worthwhile having spawned the 182 but how much of that is down to the manifold...

Well if flow is anything to go by there are significant improvements possible http://www.cncheads.co.uk/?p=777 On the Zetec engines I'm used to tuning I've had 12bhp increase at the wheels in back to back testing with 270deg and 10.8mm lift cams. The F4R runs a decent duration and lift so I'd...

What is the bore through the entire system then? Where does it change?

Just run the sports cat and order the Yozza stealth then? ;) I've got the twin barrel cat on my Ph1 BTW you confirmed on the phone that the stealth was 2.5" but is that 2.5" all the way through including the boxes and tailpipe?

Not too fussed about ease of changing the cat etc as I'll just get a sports cat but what I want to know is... Is it worth fitting the 4-2-1 for power/torque gains? With either the 4-1 or 4-2-1 I will fit a sports cat so which is best; the 4-1 with a sports cat or the 4-2-1 with a sports cat?

Excellent. Plenty of threads left I take it?

Are longer bolts required for 5mm rear spacers?

Why's that? It was replaced 10 months ago and its done 5k miles. The service interval is 5 years or 72k miles. Fair enough if its been on a couple of years....

I've got the same problem, sounds lovely and smooth from cold but once its warmed up it sounds like a really smooth diesel. Ok when I rev it up but warm idle just doesn't sound right and it's not the tappets. I had my belts changed at Renault in April last year and its done about 5k since. Am I...

R1-R on ears for £234

Worth selling a set of B14s for?

Thanks Fred, I'll give you a call in the week

Until I go turbo I'm looking at getting a spare head ported and polished and get some spare cams reprofiled by Piper cams or get the Prima racing cams. However I'm unsure of what remaps are available to go with the head and cams. Can you live map the Ecu?

I'm interested in the 172 Yozza stealth system and was wondering if there are any pictures or videos knocking around?

Are they still available new? The yozza website doesn't work.

The benefit of the 230 and 280 kits from Engine Dynamics is that the piggyback system allows you to retain all of the ECU controlled functions and the air conditioning.

For £3100 fully fitted its a pretty good price tbf. I'm saving for it at the moment :)

What is the Ph1 seat weight?

I had Anglesey booked on the 17th but had to cancel and I've moved it to June 23rd. Shame as I'd have liked to see the car on track.

Are you running spacers at all on the front or rear? Goes well in the videos I must say, good save on the slide. Where did the EscCos go?

What suspension, tyres, clutch and diff are you running?

Yeah I'll get one on ebay, I just can't link from ebay as I'm in work.

You can get 5mm and 10mm hubcentric ;)

My radiator looks a little sorry for itself so I was thinking of fitting one of these. http://www.direnza.co.uk/index.php?route=product/product&path=372_382_385&product_id=327 Anyone got one?

http://www.cliosport.net/forum/showthread.php?602138-Spring-rates-of-Bilstein-B14 http://www.cliosport.net/forum/showthread.php?672245-H-amp-R-coilover-spring-rates-vs-Bilstein-b14

Cheers :) thought that would be the case

I like the DS2500 compound and used the pads on a few cars. They'll be going on the front of the Clio that's for sure but is it worth fitting them to the rear?

Ears :)

Worth the extra £56 or so then?

I was just about to order 4 x 195/50-R15 Yokohama AD08 at £72 each and noticed the same size Toyo R1-R for £58.50 each. The R1-R are softer (faster wearing) 140 treadwear vs. 180 on the AD08. Not as fuel efficient G vs. F for the AD08 and the wet braking isn't as good C vs. A for the AD08. But...