Hi guys just signed up! im looking to lower my put an exhaust and maybe even chip it.. any you guys know about a Magnex back box? any good? Weitec coil overs? and bluefin chip? i already have a pipercross induction kit but im looking to go a step further now if anyone can help.

I've read that the bluefin does not suit the Fiesta ST but the dreamscience does.
You won't get much benefit by fitting just a back box, the main downside of the exhaust system is the flexi pipe and the catalyst.
An uprated flexi with a sport cat and a cat back system will give you the best gains, without breaking the bank.
You can de-cat but you're risking prosecution and MOT fail, plus the engine light will be on all the time
Also the spark plugs will be better with denso iridiums as ST has platinums
and the HT leads are a bit cheap, a set of magnecors will improve the spark to the plugs.

After that it's throttle bodies and cams to get any more gains

I can't comment on the suspension, I think it's too hard to begin with.

Don't forget to upgrade the brakes to match the power!!

The sky's the limit really, depends how much money you want to spend

cheers m8 helped alot.. how much does it cost to do all that to the exhaust? have you done it to yours?

have a magnex exhaust on my car was easy to fit and sound nice! as for suspension I only got eibach spring but its does improve the handling and also look nicer cos the car been lower! as for bluefin did heard as well than they don't work !

is your exhaust just the back box or the full system? how much does it cost?

throttle bodies is the way forward gained over 50bhp on mine

Hi im new to the forum and i want to tune my ST up as much as i can, i am thinking of getting a full exhaust system, typhoon K&N air filter and maybe a dreamscience but i have heard people talking of throttle bodies, what are they? I have got about £3000 to spend can anybody suggest what would be the best to do to get the most performance out of my car? Thanks

Man, wish I had 3 grand to spend on me ST. I'd recommend selling your Fiesta and using that 3 grand to upgrade to a focus.

Can't you get the pumabuild 2.3 engine conversion for less than £3k??

nah i ment to goin on rollin road last wkend but ended up doin other things! throttle bodies is the way forward!

Id go for Dreamscience DSF3000 a exhaust system manifold ect K+N, Piper cams and you have around 180bhp and still have enough to get it lowered...