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The lambda is a narrow band sensor it's purely there to tweak the mixture. It can't accurately read the air/fuel ratio.

Maybe it's me but the conditions It says in the Renault manual that the Injection computer ignores the upstream sensor seem to contradict what your saying and on the next page of the manual it's states that you do not exceed 4800rpm if you are testing mixture correction.

WTF?

Long stroke bottom end so high piston speeds. They do work hard these engines.

He knows far more than me about Clios! I just did a lot of reasearch into N/A tuning a while back. An engine is a pump after all. If the head won't flow the air the way you want it to or the bottom end won't spin fast enough or isn't big enough to pump the air your on a hiding to nothing. You...

Do a search regarding the MK3 head and you shall find. I can't remember if it's the port shape or a valve shrouding issue but the MK2 heads were not designed with big flow in mind. It is a breathed on Laguna engine after all! Compare the power that's gained to similar 16v engines with just...

I have a look in the morning. I had to put them all into dialogys so I should have them all. Thanks.

Cup gearbox so a 129 I think. I just want the bit with the pin as I replaced the linkage that fits into the nylon bush and the nylon bush but couldn't get a straight answer from Renault as to wether I would get the same parts as is on the car if I ordered number 7 which on this picture is quite...

No. I've looked around. The later type appears to have a removeable pin like the short shift kits on ebay but I could be talking utter balls. I only came across it as a problem because I went nuts trying to figure out why my boot was such a tight fit and where a cable tie would even go. I'll...

Early type gear linkage alert. Let me know how you get on as mine has a little play due to being bone dry of grease. Later type linkage is noticeably different and the boot uses a cable tie. Couldn't figure out what I needed and got bored!

Lastly the mk2 cylinder head is a bit pants despite the CNC porting from the factory. It will never flow hero spec amounts of air. Renault rectified this in the mk3.

The F4R is a long stroke engine and so makes good torque at the expense of top end power. Once you sort the fuelling out with an RS Tuner or similar and combine the F4R's grunt with a Clios low weight you get about as much grunt as your gonna get from an everyday 2.0 N/A hatchback.

The engine has uprated cams over a shopping spec version of the engine. These are lairy enough to mess up the idle and very low end running. The VVT on the mk2 Clio is very simple in that all it does is make sure the car doesn't run like crap by moving the cam timing until things settle Down (a...

If you pm me an e-mail address I can attach a Renault pdf document 3200A which appears to have info which may help for the F4R 730.

It just holds two O-rings in place to act as a new seal. How well you fit it and the quality of the rubber o-rings will decide how well it works.

There is a thread if you can find it showing the different position of the wishbone bolt holes on the subframe.

They aren't but you need Renaults type D coolant.

Clio dci is a fail on the band gear front for me! Shame.

No worse than any other car as far as I've found. There always one bad egg though. The cambelt is the only major issue as it isn't a straight forward job so it needs to have been done properly or budget the funds to get a poor job sorted.

206 SW 2.0 HDI 12 miles each way to work with a good chunk of stop start driving and returning 50.4mpg. No good chunks of extra urban bumping that up either No 6th gear and no blue balls/ecoballmatic trickery pokery either Cup seems to very quickly get back above 35mpg when pottering around...

Correct spark plugs? This engine is very funny about plugs. Failing that the usual culprits are the injectors or an issue with the loom somewhere. You can just buy the new injector or use a known used one for fault finding to see if the situation improves. Look for damaged cables, rusty or loose...

Check all the parts are actually cup items if you get any handling issues! Naff all to go wrong on cup so just get out and enjoy it. The poverty spec is pants for anyone but the driver!

Before 4.8k it uses the Lambda sensor to trim fuelling. Your sports cat may have put the standard map out of the range it can cope with. The standard map is completely biased towards emissons and fuel consumption before the kick and even runs this under heavy throttle openings again until the...

RS tuner is a well proven generic map that will cover basic mods. It is kinda based on an old group N map That Renault offered which would have used a better filter and exhaust setup. It also raises the rev limit a bit and the idle which have benefits in the right situations. The main benefit...

There is a reason that cooksports and eibachs don't go that low. It might look good in your eyes but it will ruin the handling.

Not a diesel. I want a normal 1.6 or 1.8 petrol for my next car. I miss boggo petrols for everyday driving.

You said it right there. A good mapper! It's not s**t. It just doesn't ignore the Lambda sensor until after 5k. Well 4.8k according to renaults technical documents. I'm sure Renault has their reasons for doing so. Probably that for best power you'd be up there anyway not trying to drive it like...