Downpipe+Standard CAT on Ibiza Cupra TDi

[Bull3t Proof]

Im looking at doing a Downpipe on my cabbie.

Currently have a Custom CAT back exhaust, nice tone---now i want more power.

Removing my CAT is not an option as this is saving my Turbo from going POP!

I have Software on my car as well as a K&N filter(with some mods to allow MUCH MORE air to pass)

What i wana know is, if i put in a 63mm(3.5") downpipe and KEEP my Standard CAT will\should i expect power gains? Boost comes in lower? Tone change of exhaust? Will it Eat the CAT away?

 

[Damoegan]

The cat is part of the down pipe. So if you get a high flow down pipe you get a choice of having either a high flow cat or a de-cat. http://www.awesome-gti.co.uk/section.php?xSec=339&xPage=1

 

[antnee]

Have you had it mapped in some way so if you remove the CAT it will blow the turbo?


and 3.5" is far to big, 2.5" is about right. Its a VAG car not JAP

 

[Bull3t Proof]

Antnee i only know its 63mm and yes you are right - this was a typo from my side.

 

[adam kelly]

iv removed my cat never had a problem pass mot every time aswel.Didnt think takin your cat of would blow a turbo.

 

[antnee]

As Adam said, lots of TDi owners remove the CAT ( as will I when I get the exhaust done) and no one has problems. Turbo's can only handle a certain amount of power (around 190bhp on a standard pd130 turbo) so that may be your main problem

 

[CJRamze]

If your overboosting that just sounds like the worst way of gaining power.
All VAG TDI do a 2.5-3" Downpipe decatted, always the best way

 

[Yosh]

63mm cat-back will be fine...TDi motors can make power without excess boost; overspinning a VNT turbo is especially bad...

 

[Deamox1fy]

BUT this is his first turbo that's gone.. How many km's did you put on your cab before this happened? Obviously "overspinning" is bad!!! That's what the word says, doesn't it?

@ CJRamze - Do you have a part number for the front bumper on your cab? Looks wild.. And on the skirts? Sorry, thread jack!

 

[CJRamze]

BUT this is his first turbo that's gone.. How many km's did you put on your cab before this happened? Obviously "overspinning" is bad!!! That's what the word says, doesn't it?

@ CJRamze - Do you have a part number for the front bumper on your cab? Looks wild.. And on the skirts? Sorry, thread jack!

Hi Dude, Honestly couldn't tell you the part numbers as mine came out the factory with it.
Its the Aero Kit, Best bit is the rear bumper but you'll need a custom exhaust for that as the one you buy with the Kit is rubbish!

Its called the Aero Kit, Seat Sport addon I think

 

[Deamox1fy]

It looks awesome! I'll try and find the P/N's for it. Although, if I do the front, I'm gonna wanna do the rest so might aswell settle for the whole kit. Lol, will google some pics and check what the one with the kit looks like..

The looks it gives makes the car look crazzzyyy

 

[CJRamze]

Here you go
http://picasaweb.google.com/lh/photo/pXbmbgoiGvpuW06do4m2wg?feat=directlink
and
http://picasaweb.google.com/lh/photo/wTHzK8YLE1QRFQ73Xw2i-w?feat=directlink

 

[Ant FR]

Here you go
http://picasaweb.google.com/lh/photo/pXbmbgoiGvpuW06do4m2wg?feat=directlink
and
http://picasaweb.google.com/lh/photo/wTHzK8YLE1QRFQ73Xw2i-w?feat=directlink

i reckon a little colour code on those side strips would finish it off.

Roll on the spring so i can get my sideskirts fitted, no point in all this mush.

Back on topic.

So what are people saying, if you change to the milltek decat pipe then your gonna end up with problems??????

 

[antnee]

So what are people saying, if you change to the milltek decat pipe then your gonna end up with problems??????

No, just the OP as he has it mapped badly and is pushing the standard turbo too much. There are loads of people on here, IOC and briskoda with de-cats and haven't had a problem at all!

 

[Bull3t Proof]

Hi Guys

The reason my turbo blew was cos of less oil in engine.. I should have went with my instinc and checked it that morning. NOW everyday im checking oil...LOL

what i was trying to say\ask is.... IF i put it a 2.5 downpipe---will my boost come in earlier?
I am not a Mech so know very lil about the technical aspects--i kinda confused myself with boost etc... sorry guys.