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Flow (and reversal of it) or more important on turbocharger headers yes, pulse tuning can be used though to reduce lag.
Not sure what you mean about the pulsing in inlet and machining smooth?
4-1 will typically yield a better figure at a specific rpm (or close group of rpm's), usually set as the point of peak power.
This engine speed will depend on length.
4-2-1 will typically yield a gain over a much wider spread.
Its all down to length, and how that effects pulse tuning...
depends which is burst. some are flexi and solid swaged together. these are quite pricey from renault.
Would likely work out cheap for you to just get a flexi section made up by the likes of Pirtek.
Whereabouts in S.Wales are you?
Cant remember of the top of my head.
Cools better than std, and its light as hell.
I'll put some pics up of the fan mounts. proper job, not bolts through the fins or owt daft!
This is using a short rad kit ive put together for the Mk1 Clios.
All cnc'd fan brackets and mounts.
The Mk2 version will be available in about 3 weeks if your still stuck then.
Retail is £250+vat (inc fan and fittings).
I see, I thought you meant a fabricated aluminium one.
Well he bought that for £73 delivered of the net. I bet motor factors price wouldnt be much different.
All I can suggest, is that if there are other clio's running the same turbo orientated spec/set-up, with more engine output, then you find out why yours is less as seamingly there is a problem with your car.
But as for a comparison between yours and a SC set-up, theres numerous reasons for...