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Need a decat pipe!!

3171 Views 22 Replies 15 Participants Last post by  Mattgeezer
I'm looking for a decat pipe for a mk4 1.9tdi 90 on a T reg, any ideas or offers around?

Thanks
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milltek, or cut your cat out and weld a piece of pipe in or try a custom place

craig
Does it make it any better or is a wasted mod?
Will only be better with a larger downpipe.
it will help the turbo spool quicker well it does on the 130 anyway. I cant see a large bore helping a diesel TBH

This company used to do them from ebay
came accross this bit more than i paid but looks well made[Y]
Yeah if you know anyone with a welder it will be alot cheaper than buying one ready made as said cut the cat out and weld a piece of pipe in place [Y]
came accross this bit more than i paid but looks well made
nice find , cheaper than the milltek down pipe to

thanks for that
I'm also looking to get a decat pipe not sure witch one to get tho might go for the hot tuning one
I'm also looking to get a decat pipe not sure witch one to get tho might go for the hot tuning one
ive just emailed hot tuning for a price including postage
Sorry for hijacking your thread - im clueless on exhaust systems! anyway my question is for better performance and decent sound, what will i need? Ive got a gttdi 130. Would welding piping instead a cat, or a decat pipe be better for performance? And of course a decent backbox. Any advice please?!
As you said pal de-Catt and a decent back box Will gain better performance and sound

Getting the down pipe and decatt together would be a better option as then its a bigger diameter bore from the turbo (less restrictive )

I've emailed hot tunning they said they should be getting them i'n within the next couple of weeks
well it worths it if you are going the right way
decat and larger downpipe is defiantly worth it i went for a full miltek system on mine decat downpipe and non res cat back system. slight power increase turbo spools much better and you can really hear it whistle. the car sounds great quiet when driving normally but a nice burble when you put your foot down. not forgetting the owl/pigeon noise which i personally love!!
came accross this bit more than i paid but looks well made
nice find , cheaper than the milltek down pipe to

thanks for that
im running a THS on mine, great quality and comes with all the sleeves too if youve got stock/modified rear section or decide to change
i have hot tunning on my 90, studs for turbo did not line up and diameter was slightly smaller so did not fit in the sleve properly, these guys will sort you out

http://www.empperformance.com/
Got a decat and cat back custom exhaust for £275,

Massive improvement!
When I had my first TDi I read somewhere that it was researched and therefore designed on the Milltek downpipe so that the elbow from the turbo was the original diameter and then after the flexi part of the pipe, became a bigger bore. I think it was something to do with keeping the airflow speed up on the first big bend and then allowing the air space to exit the car. Sounded reasonable at the time to me, plus it means that access to the downpipe to turbo nuts wasn't any more difficult when fitting the downpipe.
When I had my first TDi I read somewhere that it was researched and therefore designed on the Milltek downpipe so that the elbow from the turbo was the original diameter and then after the flexi part of the pipe, became a bigger bore. I think it was something to do with keeping the airflow speed up on the first big bend and then allowing the air space to exit the car. Sounded reasonable at the time to me, plus it means that access to the downpipe to turbo nuts wasn't any more difficult when fitting the downpipe.
What was?[:cool:]
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