mk2 VTR decat

[Toby-VTR]

im looking into decatting my vtr, however due to the cat being in the down section i dont know what to do im abit strapped for cash so is it possible to just buy a decat section for the manifold/downpipe or do i have to buy a whole new manifold?

looking for opinions on this and rough prices and performance gains? anyone help me please?
:)

[MiniGibbo]

if u get the raceland manifold this should decat it as well wudnt it ? im in the same boat as you mate stupid down pipe cats ;)

from what ive been told if you get the racelande manifold it goes from engine to centre pipe


Gibbo.

[Toby-VTR]

if u get the raceland manifold this should decat it as well wudnt it ? im in the same boat as you mate stupid down pipe cats ;)

from what ive been told if you get the racelande manifold it goes from engine to centre pipe


Gibbo.

from what iv looked at all sports replacement manifolds dont have cats in so effectively decatting the car!

[MiniGibbo]

from what iv looked at all sports replacement manifolds dont have cats in so effectively decatting the car!

end of the day its french, so i dont think anything would be normal :y:

[Toby-VTR]

end of the day its french, so i dont think anything would be normal :y:

lol :clapping:

anybody any ideas?

[VTS_16v_Boy]

Talk to www.kam-racing.com about their RaceLand manifold and what to do with the Lambard/O2 sensor, loads of people have changed their manifolds on Phase2 R's so the answer IS out their :y:

Remember that for the MoT the cat Will have to go back and as its in the manifold that means a manifold swap before MoT time.

If you dont want all the hassel but still want a 4branch manifold look to www.cituning.ltd.uk as they do a 4branch manifold With a sports cat in it to aid performance. Its expensive as it has the cat in it but it will make the car 100% MoT friendly. Might be worth looking and saving your money

[jimbo06]

yes if you want to decat your car you will have to change the full manifold.
certain manifolds such as the gmc and the raceland completly decat the car, but remember in doing so when it comes to mot time you will need to put your standard manifold back on to pass it.
Cituning offer a manifold which encorporates a sports cat which is made by milltek and is a very good peice of kit. this manifold is quite expensive at £420, but with this you will pass an mot so every mot time you wont have the bother of swapping manifolds round. i have a milltek manifold and would definatly recommend one if your not to bothered about spending alittle more money.

[VTS_16v_Boy]

Like I said not cheap but once its on its on and you should never have to change it.

[jimbo06]

Like I said not cheap but once its on its on and you should never have to change it.

exactly mate, thats the main reason i bought mine.

[VTS_16v_Boy]

Got any pic's of it

[jimbo06]

Got any pic's of it

gonna be updating my thread with pics on saturday mate when i put my bmc on ;)

[Saxo_Speed]

Iv got a De-Cat'd downpipe for a Vtr with cat in manifold!

Anyone interested, drop me a PM! :y:

[jimbo06]

Iv got a De-Cat'd downpipe for a Vtr with cat in manifold!

Anyone interested, drop me a PM! :y:

but the cat is in the manifold, not the downpipe.

[Saxo_Speed]

The cat is in the downpipe! It separates from the manifold after the top sensor!

[mardon]

You could get the raceland (nice and cheap / good gains). Changing the mani would be a right ball ache every MOT time. Maybe worth getting a 3 section exahust coz then you could fit a CAT from a scrappy at MOT time. Its a complicated one because of all the options but unfortunatly there no really cheap hastle free option. (unless you have friendly MOT man).

[VTS_16v_Boy]

So are you saying that you have a modified factory item or a after market 4branch?

Post the full details of what you got in this thread and you might get a few offers :y:

[Saxo_Speed]

Basicaly its the Downpipe section of the stardard manifold that has the Catalist material in it!

I had a garage take the downpipe off the manifold, and they removed all of the Catalist material! By doing this, the manifold is now straight through with no restrictions and is de-cat'd!

I found this a cheaper alternative to an aftermarket jobbie, aswell as letting the gases flow quicker out of the engine and a small increase in noise level. (coupled with a straight through senctre section you get a few pops and bangs) ;)

If anyone is interested in this, then drop me a PM!
It would be a straight swap over with the standard downpipe!

Cheers

[VTS_16v_Boy]

Hmmmm without sounding rude, personally I wouldnt recommend people do that. As 1 you have made the car non MoT friendly, 2 if your going to change the manifold you might as well buy a propper 4branch as its not just the cat which is restrictive its the complete layout of the 8v manifold.

Out of interest how much did a garage charge you for removing the manifold, removing the cat material and then refitting it?

If it works for you then thats good but for all the mucking about of changin a manifold you might as well save your money and get a propper item.

Original advice still stands, best people to talk to are www.kam-racing.com as they have sold loads of their RaceLand items to Phase2 R owners and will know what is best :y:

[Saxo_Speed]

De-catting any car makes it not MOT friendly! The manifold never came off, it was the downpipe that did which is joined with 4 small bolts! Half the hassle a 4 branch would cause!

My mates are machanics so i dont realy pay for much! a few Jars in the local normaly does the trick! :drink:

There is only 1 manifold that i know of which is a straight fit on the Mk2 (BMC) so relocating the oil filter and buying a sleave for the sensor is also needed when replacing with an after market item! Then manifold bolts and a new manifold gasket, which is more money again!

Im my case i didnt feel this was worth all the hassle! This method might not produce as much of a gain as a 4 branch... but at a small fraction of the price, i feel the way in which i went about it, was a cheap and effective allternative to replacing the full manifold!

Which is what the Mk2 people are after! :y: