Demon tweeks have got a better website now, much easier to find stuff that you can use for your car instead of finding a nice product and seeing it dosen't fit your car just thought i'd say, you have to select MK3 fiesta and it tells you whether it will fit the Si or not

but they've got this on there, now obviously I don't need it, just as a general chatting point.. do these actually make a difference?
http://www.demon-tweeks.co.uk/Performan ... 2979/28507
im guessing it for higher performace engines which need more fuel to match the airflow and as its adjustable it'll allow to increase or decrease airflow and make the fuel to suit... That or there just a con, probably are for cars with just a K&N or something lol

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i have one on me Si turbo

not sure how much of difference they would make to a n/a engine but mine has great response when i boot it with no flat spots etc...

i guess if you got one fitted and set up properly it might make a difference

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all it does is raise the fuel presure at a ratio of 1.7:1 rather than standard 1:1 .

wouldnt bother, if your car has flat spots i would look at getting the issues sorted rather than patching over them

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RIP Ben. Gone but not forgotten.

SportKA - I've driven one and its deffinately a Girls car

Ford Fair 2010 0-60 7.45 secs Trek 4100

Save the trees, wipe your arse with a Cosworth