Hey guys, just wante to ask a quick question. I've searched the forum and can't fine the info I want so can someone help me.
I wanted to know what de-cat and a cat back exhaust is? And which is better etc. Also what's the best basic mods to crank up my BHP dramaticly. I already know I want the K&N 57i induction kit but what else. Thanks for your support

with a decat you have to swap to a cat when it comes mot time or it fails on emissions and i think you can get a fine as well for having a decat

decat is just a pipe to replace the Cat, big increase in power but illegal and noisier, also will mess up your hego sensors so you need to bypass them to I think, lot of hassle. Cat back is full exhaust from the cat back ie retain your existing cat. Only a full system from manifold to tailpipe will give some genuine extra BHP, any other parts not too noticeable other than better sound.
K&N first then full system.

So if I got a decent cat back exhaust and a good 4-1 manifold then I can just replace them parts on a standard cat and it would still increase some decent BHP? Or can I get a decent full system with for race cat or something? Thanks for the help.

yes and get a manifold that comes with a flexi as the ford one is restrictive, most well known makes come with one anyway, so yes you can leave your cat in place or get a full system with a sports cat which is legal that would be the best way to go, will have better torque moreso than bhp. K&N and full system perhaps around 160-170bhp.

how far are you wanting to get with bhp, with bolt on mods you can get up to the 200 mark, or you could go for the supercharger and get 300+

Depends on what BHP you want and what dollar you have to spend

as i said in your welcome post i have K&N, manifold, decat and cat back and got 173bhp a few months ago.

the mountune cat back will give you a little extra power and a nice sound, but to get real power output you need to change the manifold and get a sports cat or decat pipe, then its cams and inlet change to go about 180bhp upto 200.

mountune are pricy but they are also very reliable and good at what they do!

from standard to 200bhp your looking at a few thousand... for probably another couple thousand more you could get a supercharger kit fitted and get over 300bhp its how far you want to go and how deep your pockets are

i would love to supercharge but i am happy with how my car is on the road and on the track, just need to get it mapped to get full potential out of my mods

sorry this is dragging on now, but you also said about my brakes, they are bigger than the standard ones and stop much better

also my car was totally standard when i got it

Thanks for all the replays, yeah i just want to get to 200BHP fast then i think ill be happy then i just want to get the best out of my ST.

So Dan is a decat illegal like if you get caught? becuase i would much rather have something legal on because of my carrer. but i guess then i will lose out on performance? and is there any good place to get things or should i just search the net and have a look.

A de-cat will fail your MOT due to emissions, and if police were to ever stop you to do a random spot check you may be in trouble there too. Best bet is to get a sports cat but they are literally 4 times the price (for the Milltek anyway). I am saving for a sports cat as it eliminates the need to swap it over for an MOT, and doesn't mean you have a light on your dash (until you get it bypassed) and there won't be much lost in regards to power, possibly 4 or 5 bhp? It's your call

if your aim is 200bhp then to save money and messing about I would simply do it in one single modification and save up and have it all done in one go, better deal then on labour too:-

1) Mountune Stage 3 200bhp (fitted by Ford or go to Mountune)

2) buy all parts from Jamsport who will fit and remap 200bhp

yeah it is illegal, i just cant afford a sports cat right now, when i can afford one i will get one

the sports cat you may lose 1 or 2bhp from what you will get with a decat but its not bad!

if you are looking for 200bhp you would be better off going down to mountune and getting their kit!

Ive looked into Mountune but it didnt say they had a stage 3. How much is stage 3 i know stage 2 is 1800.
I really wanted to do Mountune but i didnt think i could do anything else if i every wanted to get more BHP. thats why i was going to buy parts and do it that way.

I expect that stage 3 is around £3000 as the inlet sells separately for about £900

haha sorted, Moutune CAIS or K&N 57i? or do you get the CAIS in with the 165/185 kit?