decat pipe

[majorscooby]

If i was to get a de-cat down pipe,
firstly would i notice more power, secondly would it require a re-map after and thirdly is there a lambda sensor that gets removed? If so what happens to it? 05 WRX

[BIG"E"]

Rich mate dont worry.

I am sure its fast enough for the "RING"

[C. J.]

You can change it to a decatt but the CEL will come on . yes you will notice adifference
Remapp advisable
I believe you have a catt in the up-pipe and if so would think your be better off getting ride first as its just a resister to fix that one & cheaper

[majorscooby]

Originally Posted by BIG E

Rich mate dont worry.

I am sure its fast enough for the "RING"

Your so worried im gonna be quicker than you!! im just after a little more power but also a little more noise. dont wanna change my back box as i like the style though

[BIG"E"]

Originally Posted by majorscooby

Your so worried im gonna be quicker than you!! im just after a little more power but also a little more noise. dont wanna change my back box as i like the style though

Not at all worried mate.

I remember (just) how expensive it was when I got married.

[majorscooby]

[quote=BIG E]

Originally Posted by majorscooby

Your so worried im gonna be quicker than you!! im just after a little more power but also a little more noise. dont wanna change my back box as i like the style though

Not at all worried mate.

I remember (just) how expensive it was when I got married. [/quote:260cq6pw]

Yeah tell me about it, but all is cool on the wedding front finances! gotta get these bits and piece's sorted and have some fun before i hear tiny feet running around!

[Scott.T]

No cat in the up-pipe on a 2003> only 2001-2002.
The decat downpipe for the newage should have the lambda boss in the bottom for the lambda to fit into. After a while the CEL will light with P0420 CAT efficeincey below threshold

This can be bypassed with a resistor fix, or reflashed with the CEL disabled (5 min job to reflash standard MAP with CEL disabled) or would be done as part of a remap.

Without a remap you may see slight boost spiking and a slightly leaner mixture. But they run as rich as hell, so not really a problem.

[BIG"E"]

Tiny feet ??

Is there some thing else on the way then??

Mmmmm de cat d/pipe just fitted one. I wasnt to sure at first but i like it now. You can here the turbo whistle & a slightly deeper tone out the back. Buy it mate. Mind your fingers on the 14mm nearest to the inner wing.It hurts.

Originally Posted by Nige

Mmmmm de cat d/pipe just fitted one. I wasnt to sure at first but i like it now. You can here the turbo whistle & a slightly deeper tone out the back. Buy it mate. Mind your fingers on the 14mm nearest to the inner wing.It hurts.

Nige
I thought the same when i did mine, was worried about the sound of the turbo, soon get used to it though.

[majorscooby]

Cheers guys for clearing things up as usual, especially scott!
Have started looking around and found one on japspeed site for £159 but i have an order of some brakes coming in from dave f at demon tweeks so i may see what he can do if i add to the order!

And Ian no kiddy's as yet! well i dont think there on the way, erm............

Rich
I brought stainless headers from Japspeed, they blew from new, i had the flanges skimmed as they were like bananas.
Headers were there so called spec 2 best ones,£245 plus £40 for the skimming and still they blew.
I called Japspeed they said sorry but as you have fitted them we will not change them.
There attitude stank.

I would never go any where near them again

I actually got a set off of ebay which seem really good.
Word of advice, If you do go for headers do not go for the 2 bolt type with seperate up pipe, they are ****e.

Check out piston heads or ebay there are plenty of stainless downpipes, Remember as they are stainless it dos'nt matter if they are 2nd hand as still look like new.

Isn't it bloody marvelous how people get treated. Now Japspeed where good as gold with me. I had tried two other well known make's with no luck i had to send them back. The Japspeed one was well made & fitted . Maybe they have improved there service of late. Not trying to poo on what Crowman has said it sounds like he had a nightmare. I just wish they would treat everyone the same

[Scott.T]

If you looking at £159, then I would recommend you go for any of these :

Hayward & Scott downpipe cat removal @ £182
http://www.haywardandscott.com/Details. ... ategory=13

ScoobyWorld AfterBurner @ £171 (made by H&S)
http://www.scoobyworld.co.uk/catalog/pr ... cts_id=447
2nd cat removel an additional £100 : http://www.scoobyworld.co.uk/catalog/pr ... cts_id=179

Revolution @ £219 but also does away with 2nd cat (double check with them though, as the picture looks like the pipe is long enough to remove 2nd cat)
http://www.revolution247.com/exhausts-m ... 461-0.html

[majorscooby]

Going by what Martyn has said about japspeed i will probaly stear clear of them, service may be o.k Nige but dont want to take the down pipe off ever five minutes if its not fitting correctly or warping!

I did look at the scoobyworld one and its more than likely the one ill go for.
must get under the car tomorrow and see whats involved, cant be that hard?

Rich
I do not know about the quality of ther down pipes, as Nige says he reckons thay look good, and they may be.
All i do know is their 2 peice 2 bolt headers are complete ****e, poorly made and just dont fit wel at all.

[majorscooby]

Originally Posted by Crowman

Rich
I do not know about the quality of ther down pipes, as Nige says he reckons thay look good, and they may be.
All i do know is their 2 peice 2 bolt headers are complete ****e, poorly made and just dont fit wel at all.

When you say two peice do you mean both down pipe and lower cat section after that before the centre piece, Which then consists of two poxy bolt to pin together!

No Mate, I am talking the other side of turbo, the header and up pipe.
To be honest you cant go wrong with down pipes, the only thing you will pay more for from say hayward and scott is the very nice tig welding,which will last longer.
All i wouls say, which i am sure you know, is make sure you go for the open mouth type.Personally also i would get a decent set of gskets from roger clarke.
You will need the one at the turbo end and also the flange end that meets the centre section.
If your fitting down pipe yourself, give all down pipe to turbo studs and bolts a good spray of WD40 a day or 2 before you do it. Dont want a snapped stud.

[majorscooby]

Originally Posted by Crowman

No Mate, I am talking the other side of turbo, the header and up pipe.
To be honest you cant go wrong with down pipes, the only thing you will pay more for from say hayward and scott is the very nice tig welding,which will last longer.
All i wouls say, which i am sure you know, is make sure you go for the open mouth type.Personally also i would get a decent set of gskets from roger clarke.
You will need the one at the turbo end and also the flange end that meets the centre section.
If your fitting down pipe yourself, give all down pipe to turbo studs and bolts a good spray of WD40 a day or 2 before you do it. Dont want a snapped stud.

Good man that helps, sorry i get really confused as ive never changed anything but a back box on previous cars!
The search is on but i dont want to cock anything up before germany!!!

[C. J.]

Originally Posted by majorscooby

I did look at the scoobyworld one and its more than likely the one ill go for.
must get under the car tomorrow and see whats involved, cant be that hard?

Hayward and scott make there's ring and speak to ian and he may drop the vat for cash . Plus its only the other side of dartford tunnel

[majorscooby]

Originally Posted by C. J.

Hayward and scott make there's ring and speak to ian and he may drop the vat for cash . Plus its only the other side of dartford tunnel

Wahoo, good boy c.j will do!

[Granby]

Originally Posted by SilverSurfer

No cat in the up-pipe on a 2003> only 2001-2002.
The decat downpipe for the newage should have the lambda boss in the bottom for the lambda to fit into. After a while the CEL will light with P0420 CAT efficeincey below threshold

This can be bypassed with a resistor fix, or reflashed with the CEL disabled (5 min job to reflash standard MAP with CEL disabled) or would be done as part of a remap.

Without a remap you may see slight boost spiking and a slightly leaner mixture. But they run as rich as hell, so not really a problem.

Yes there is a pre cat in the up-pipe, my 2004 WRX had one

Would recommend a decat up-pipe & down-pipe and then a remap and you will see a big difference

[C. J.]

Originally Posted by Granby

Yes there is a pre cat in the up-pipe, my 2004 WRX had one

Would recommend a decat up-pipe & down-pipe and then a remap and you will see a big difference

I'm glad I'm not going mad !

[Scott.T]

Seems the 2.5 WRX dropped the up-pipe cat.
Not sure where I got the info on 2003 WRX > not having one.....search engine on Scoobynet is now pants, so cannot find original source of info....