Replacing the exhaust

[alexmccabe]

So, I am unfortunately completely ignorant when it comes to this. It's quite annoying. At some point in the future I would like to replace the exhaust to a Milltek one, ideally before a remap.

The question I have is, do I just buy the cat-back or do I have to get the downpipe too? I have no idea what either things do (I'm sure a little Googling will help, gonna do that in a minute). Also what is the difference between resonated and non-resonated?

I tried using the search function on here, but I find it to be horrible at actually finding what you want. Heh. Help is appreciated!

Thank you.

[Nasir]

It's up to you. The cat back is at says on the tin, just the system from the cat. Half a system if you will. A downpipe replacement is the whole system, the downpipe comes from the exhaust manifold. More benefit is found in the latter, obviously.

[camfollower]

If you do go for cat back only and not a full TBE, then I would defo get a pre-cat delete.
It's worth noting that a TBE wouldn't have a pre-cat. It would also be the larger 3inch downpipe, and your choice of a 100/200 cell cat (instead of standard 800 cell) or de-cat.

So it's trade off time, and really down to your funds and what stage you plan on doing... if just Stage 1 then a pre-cat delete and cat back system is fine.  Stage 2 would probably run on the same pre-cat delete standard exhaust, but you'd be better off going for the TBE, from Stage 2 upwards.  I wouldn't run a Stage 2 without at least the pre-cat removed...

[GTI-Ross]

as above - Downpipe is from manifold / turbo. Replace this has the the best performance gains & sounds - especially if couple with a sports cat (100 or 200 cel)

but it can be very expensive. It all depends on what your looking for and your budget.

Option 1 - Remove rear muffler - cheap and sounds awesome

Options 2 - Cat-back exhaust - mid priced - you can have it resonated or non -resonated - non - resonated been louder

Option 3 - Full Turbo back exhaust - expensive - but will give you more free flow air - hence more BHP gains when mapped

Hope this helps.

[alexmccabe]

Thanks guys, I am not exactly the richest person. I just want a little speed gain and nicer sound really, so cat-back would suffice?

[GrayMK5GTI]

Thanks guys, I am not exactly the richest person. I just want a little speed gain and nicer sound really, so cat-back would suffice?

Yes. Cat back for noise, Turbo back for power. You will need a reducer to fit a Milltek cat back with standard downpipe & cat.

May be worth trying one of the other cheaper brands - dont automatically think Milltek is the only supplier of aftermarket exhausts for the MK5. . .

[GTI-Ross]

If your budget is tight then just remove your suitcase back box ( the last muffler under the boot) and get a tail pipe fitted.

Blueflame do one - or review on YouTube - "MK5 Suitcase delete"

Cat back exhaust wont really give you any more power as such thought mate.

[alexmccabe]

Thanks guys, I am not exactly the richest person. I just want a little speed gain and nicer sound really, so cat-back would suffice?

Yes. Cat back for noise, Turbo back for power. You will need a reducer to fit a Milltek cat back with standard downpipe & cat.

May be worth trying one of the other cheaper brands - dont automatically think Milltek is the only supplier of aftermarket exhausts for the MK5. . .

Right... nothing is easy is it. Haha. I know other brands exist, I can afford some of the nicer things though.  just probably not the whole thing.

Cat back exhaust wont really give you any more power as such thought mate.

Told you I was ignorant, didn't I. Haha.

[camfollower]

I wouldn't bother with a Cat back if power is your only incentive... do a pre-cat delete, custom map it, then save your money to stop it (NQSBBK)

[northyracing]

Thanks guys, I am not exactly the richest person. I just want a little speed gain and nicer sound really, so cat-back would suffice?

Yes. Cat back for noise, Turbo back for power. You will need a reducer to fit a Milltek cat back with standard downpipe & cat.

May be worth trying one of the other cheaper brands - dont automatically think Milltek is the only supplier of aftermarket exhausts for the MK5. . .

Does the milltek not come with the reducer to fit onto standard exhaust system

[GTI-Ross]

Check out the group buy, Blueflame pipes (rear muffler delete)