whats the general consensus k&n 57i or a J1 ?? for a 1.2?? and looking at getting a new exhaust made the mistake of buying a zetec s exhaust and it doesnt fit my style + so would this zetec one fit?? the only way it didnt fit was coz there wasnt enough room for the extra part

heres the zetec s http://www.cobrasport.com/exhaust/Ford/Fiesta+Mk7+Zetec-S/12/0/0

and you can see just after the flexy pipe the bigger section that didnt fit in my car, so would this fit??

http://www.cobrasport.com/exhaust/Ford/Fiesta+Mk7+Zetec/12/0/0

Dont bother with a cone air filter as these suffer from heat soak. It will reduce your power but will make a nice noise if you like that sort of thing. You will be better off buying a K&N or Pipercross replacement panel filter.

They do a good selection of performance parts at DCP: http://www.directcarparts.co.uk/wl.aspx?40000059&lang=eng

cheers, i have the panel k&n and yh im not getting a cone done some digging on their results, and how they are ONLY ever tested with the bonnet open and not on load liek condtions like stuck behind another car, and things like that, not to bothered about the noise, hopping to fit a cobra zetec exhaust to gain so noise :) if a zetec with fit a style + exhaust well?? i bought a zetec s exhaust and it didnt fit at all.... ??

Agreed, an underbonnet cone filter will loose power when the engine warms up as it draws warm air (it makes more noise though- if thats what you want)

As part of my research into "performance" air filters, i discovered this thread on a VW forum, where they tried various different intake and filter setups on a 16v golf GIT,

Its a massive long thread spanning 2 years so here are the conclusions in a nutshell -

Stock filter with stock airbox........... 145Hp...... ("baseline")

K&N panel filter with stock airbox... 145HP........ (exactly the same as the stock filter/ no difference/ improvement)

no filter element with stock filter .....145HP.........so the filter element is not the most restricted part of the intake,

And it makes no difference whether you have a stock paper filter fitted, a K&N panel filter or no filter ,(on this 145HP NA GTI) the stock filter costs £10, the K&N £30, the stock filter filters better than the K&N (the K&N allows smaller dust particles through- especially when new and it has not had time to build up a layer of dust/dirt on the surface of the filter) after 10kmiles, the stock filter restricts the airflow more than the K&N, but you can change the stock one 3 times (upto 6 times on some cars,) for the cost of a K&N

Moral - fit a stock filter and change it every 6months/ 6k (whatever comes 1st)- best for filtring/ protecting the engine, and same for power & torque as "performance" panel filter, no modifications/ no extra insurance hassles/ cost

Stock filter - win- win situation (might as well have a K&N sticker for all the difference it makes)

pipercross panel filter........... 148.5Hp (open bonnet so not taking the power loss due to heatsoak into account )

Stock filter/ modified airbox... 151.2Hp and better torque/ driveability (a stock filter with modified airbox outperformed everything else!)

the airbox was modified with a bellmouth added (see link for full details )

the other thing that the thread proves is that the IAT resistor REDUCED power on this car (a resistor or cheap tuning box that is fitted between the ECU and Inlet Air Temprature sensor- that fools the ECU into thinking the inlet air is cold when it is not- so the ECU richens the mixture) - what happend was the richer mixture reduced the power by about 3hp (MPG would have been reduced too)

The K&N panel filter may improve power a little or throttle response on some cars (where the filter itself is the most restrictive part of the air intake/ induction system, and the ECU can take advantage of the extra airflow - probably quite a small percentage of cars, as most modern cars have quite lage filters) and improve pick-up/ low end (off boost) power on some turbo cars but in general you would be just as well sticking to the stock filter/ airbox on most cars

The full thread -

http://www.clubgti.com/showthread.php?199237-Toyotec-s-how-to-make-your-MK3-16v-breathe-on-a-budget-Part-2-added-14-12-09

i have read through alot of articles and agree stock filters provide the same performance just not the noise, i get a better noise with k & n panel, just need clearification on the cobra exhaust i want or would like??

I had a K&N panel filter in the ST and noticed no difference in noise so not bothered with the fiesta.

I really wanted the induction kit just for the extra noise but that will have to wait :(

As FOCA said. Don't waste your money as there's no actual gains.

Ok cheers no filter but exhaust??