Could someone please explain to me the exhaust system on the MY05 wrx sti as im trying to locate a decat pipe for it and keep getting confused. Pics would be a massive help

Cheers

 

something like this?

http://www.scoobyworld.co.uk/catalog...roducts_id=179


or if you're after the downpipe

http://www.scoobyworld.co.uk/catalog...roducts_id=447

 

http://www.scoobypedia.co.uk/uploads..._schematic.gif

same as this apart from the STi doesnt have one in the up pipe i believe

 

The bugeye does, well mine did. LOL

 

im sure the bugeye STi has no up pipe cat

 

sorry forgot to mention its the PPP version with a subaru sports cat, ive had a look when its been on the ramp and the cat is really far up near the turbo....almost vertical.

 

Tall-Paul what is it you need to know?

 

Pretty sure I need this one ....the most expensive one

 

How to get rid of the 1 cat on my sti PPP, think ive got it now though ^^^^

 

why do you want to get rid of the sports cat? you wont see much difference in bhp plus the sports cat is M.O.T friendly

 

I know yeh but im a big kid and like the noise of a decat

 

fair enough... nice turbo whistle from my decat

 

where in manchester are you.. im in the area too

 

Leave the CAT in..... As said before the BHP gain is minimal and is the noise really worth the agro of having to change the exhaust every year for a MOT ?

 

I get turbo whistle with my cat fitted

Anyway as everyone has said, leave the sports cat in, waste of time replacing it with a decat pipe, your gain is minimal, and the cops will just pull you all the time and do you for emission failures

Tony

 

Im in altrincham, havent seen a white scooby knocking around though?

 

I could leave it in i suppose, would make me less paranoid around the police lol. definately decat for big turbo when ever i get one though

 

How can an exhaust be this cheap?

http://cgi.ebay.co.uk/SUBARU-IMPREZA...item1c1467acde

 

Probably because it will go through the roof before the end of the auction

Now as said in another thread, you need to watch what your doing here, induction kits and decats will just lead to you having to buy a new engine, your car will require a remap if you fit either, the PPP map is set for the parts on the car, if you remove the cat for instance then the car will "spike" and your engine will implode (not quite that bad but it will det and probably hole a piston if your lucky, if not then your main bearing will go and your going to be carless.....)

Sit back and see what people are trying to tell you

Tony

 

Dont worry im getting it remapped as soon as i fit any bolt ons...im going to watch that decat though because theres another one starting at 99p. it surely cant be very good quality though if theres no reserve on it :s

 

Then I would look for something a little better quality try milltek or Hayward and Scott they have their own websites, just google em

Tony

 

haha no chance, its a pipe at the end of the day. Id only pay for expensive systems to get the right noise but im happy with the cat back that came with the car when I bought it.

 

To be honest mate if you buy a monster turbo stick with the 100CEL sports cat, a larger turbo is going to make bags of noise

I only had a TD05 18G on mine with the 100 CEL sports CAT and it sounded like the turbo was sat on your shoulder............ Saying that I did have a front mount and Induction kit... And blanked off DV for the race chatter LOL

 

Hi m8 if you really like noisy exhaust,go for Blitz Nur-Spec R(i've got on my WRX and its really noisy),my friend have Cobra Race Box which its noisy that Nur-Spec R,i recommend you Cobra exhaust because are alot cheaper than Blitz Nur-Spec.Cobra have good exhaust and i really recommned,due good price and good quality built.Just look at Cobra exhaust here is link for website
http://www.cobrasport.com/exhaust/Su...2007%29/31/0/0

 

I'll take your prodrive Cat off your hands if your looking to go the Decat route. PM me with a price.

Jamie

 

HAHAHA Nur Spec R is just bonkers!! I had the NUR spec and HKS 3" decat Downpipe and the car could be heard over three miles away......... LOL

Do not remove the sports cat and fit one of these Just be ready to deal with the 5-0 on a regular basis

 

Had a de-cat on my 05 STi,but Scoobyworld put me a new system on inc 100cell sports cat and Afterburner Vortex backbox.With the Re map lost very little in performance.Also drive car around to warm up cat and get the garage to do emissions test first at MOT time.The Afterburner Vortex is made by Hayward & Scott and believe me the sound is addictive.

 

Ok cheers guys. Ive seen the nur spec exhaust before and would love to buy one! Already got a cat back though but dont have a clue what it is...came with the car you see. The police thing does worry me a bit but I decatted my 07 focus ST and never had any probs even though it stank! Going to have a long think....

 

Here is cat back Nur Spec R(catback include centre pipe and backbox/muffler),here is picture how look


Catback is just you don't have in centre catalytic converter(or just cat).
May help