Decat Pipes

Welly

Isit a Tig welder? if it is a might have a job for you would have serious problems with a mig doing it

nexussteve

@2442e311d9=Welly:

Isit a Tig welder? if it is a might have a job for you would have serious problems with a mig doing it

Well, I'm no welder, but isn't TIG more for Stainless stuff?
All I've been told thus far is it's possible and I need to gauge interest before he starts to look into it and buy materials.

As for gains, I have no proof, but most decats will release up to 15% power.

Guess it depends on the car…

Has Been Banned

the 1.8 and 1.6 cats are different the a different thength and the flanges are at a different angle to the middle pipe

Welly

@1c82892769=nexussteve:

@1c82892769=Welly:

Isit a Tig welder? if it is a might have a job for you would have serious problems with a mig doing it

Well, I'm no welder, but isn't TIG more for Stainless stuff?
All I've been told thus far is it's possible and I need to gauge interest before he starts to look into it and buy materials.

As for gains, I have no proof, but most decats will release up to 15% power.

Guess it depends on the car…

Tig welding is with a stick

you can mig stainless

Mechanic

I mig welded a stainless exhaust Friday at work its fine just make sure your joins are clean, and use a decent amp welder.

ash

i am interested, let us know when find out costs.etc….

nexussteve

Ok cool.

Can we start a list please?
I'm only gonna have a template for the V6, unless someone can help me with the 1.6?

Gonna need at least 5 names to make it worth while methinks!

Nexussteve - V6

djmarcopolo

any chance of a full straight thru center pipe for the V6 as these are unavailable to buy anywhere except america

Venari

American order finishes in 2 days. If you can find it there, I can ship it back.

nexussteve

@08896df403=djmarcopolo:

any chance of a full straight thru center pipe for the V6 as these are unavailable to buy anywhere except america

I'll ask!

mattuhh

I am definitely interested in the de-cat, and maybe anything else to make my car more awesome! :p

jamesshack

what would you need as a template? don't suppose a pic would do it? i asume that it would not be mot freindly? want one though if it can be done.

Mechanic

MOT wise it does not matter an emission test will be carried out according to the engine age. Most cars that have de-CAT pipes fitted pass CAT emissions test, just make sure the car is very warm before the test is carried out.

nexussteve

You can also put in additives that lower your emissions for a day! ^^

nexussteve

Ok, so to sum up, these are the numbers thus far:

-Nexussteve
-Ash
-DJMarcoPolo (straight through middle section)
-Mattuhh

Will hopefully be getting a rough quote this week, so let me know if anyone else is interested so it makes it worth his while!

Famine

**For reference, here's the MX-3 stock downpipe next to the stainless KL version:

The branches are longer on the MX-3 version simply because the manifolds are shorter. When mated to the correct fanimolds, this section is the same length. You'll note that the cat-side section is markedly longer, however…

From this image it looks like approximately 190mm longer - so you'll either need a 190mm shorter cat, or a 190mm longer mid/back section if you're going decat. I can measure more precisely later when it's not windier than God's arse outside.**

ash

any news on them decats yet??

Lori Carlyle

Would love to de-cat mine.

nexussteve

I have to have the 3 back off the road by end of next week, so once I've swapped the cars over, I can then get to work taking the exhaust off!

Fingers crossed, I should have more info for you by end of month! :)

Sorry for the wait guys!

ukmx3admin

I had a decat on my 1.8 and it didn't make any speed gains, the MX-3 seems to have a good flowing CAT anyway. But it did make it sound a bit beefier but I had a powerflow cat back not standard.

I also ran a CAT that had the innards knocked and it made no speed gains either, I was on stock exhaust then which sounds crap anyway so it didn't really make it sound any good either.

I fitted the MX-6 headers, now they made a big difference to the sound and the response. But I did have to put sound deadening in the boot, and in the end I'm having to change my backbox as now its annoyingly loud.

Here is a pic of the DECAT I use with the MX-6 Headers/downpipe:

Notice that its offset not straight!