Just bought......A 3" system! ***fitted***

[Dave_IOW]

Glad you guys have finally seen the light 

Pretty sure I was one of the first to have one of these sent over, said I was thinking about running a group buy on them and he knocked another £10 off 

Then got charged import duty/tax and messaged the seller about it and he fully refunded it!

Can't fault the bloke and received it really quickly, shame it didn't fit on the mk2 

[Wazzzer]

You could have chopped it up to fit lol

[xtetx]

im getting the engine managment light on, says o2 sensor, shall i just replace it do you think?

Replacing it won't do anything.

The problem you have is that you've decatted the car.

The reason these run 2 o2 sensors is to monitor if the cat is working or not. It should see a different result at the second sensor after the car, but because you've got no cat it's seeing the same gas and thinking the cat isn't working, hence your light.

This needs to be mapped out.

Some people have used spacers and the like with varying success, but to do it properly and ensure the light doesn't come back you need the map altered to suit.

Cheers Prawny, you had a map on yours?
Im sure will be reet once i eventually book in at rtech 

[Prawny]

Cheers Prawny, you had a map on yours?

Yea man, you could say that 

http://www.golfgtiforum.co.uk/index.php?topic=244468.0

Mine's an AGU though, so never had a second lamda sensor in the first place. I have a wideband AFR gauge hooked up to a sensor in the second hole in the downpipe

[xtetx]

mate, that is so insane! 
need to sort out a few bits on mine, and ill be booking in to rtech!
you need to get a full build on here! 

[davemk4]

So does this 3" better than the usual 2.5" for a ko3s?

[Chris.]

What size are these over the axle?

Just wondering if it would be cheaper to buy this exhaust and mate it up to my TT downpipe rather than buying 3" stainless straights and bends

[Prawny]

What size are these over the axle?

Just wondering if it would be cheaper to buy this exhaust and mate it up to my TT downpipe rather than buying 3" stainless straights and bends

3'' everywhere Chris.

I too was looking to make my own 3'' stainless system, and had priced up all the bends and straights, f-bands I'd need to make a really nice system, but when this came along, it worked out well over £100 cheaper, with no labour to pay either!

I bought the complete system, and sold the downpipe it came with for £70, so the entire system owes me £150.

it's fantastic.

[Chris.]

Thats not too bad, I too would be left with a downpipe

However, im wanting to try make my remus backbox fit which I think is only 2.25" at the entrance to the backbox and twin pipes out.....it sounds soooo nice at 250bhp.

Somehow, I think a 3" pipe straight out the back will be a bit too much without a silencer maybe?

[golfyste]

It has a silencer at the back chris, a reasonably sized one at that but it's not restrictive so all good