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MarkB

Cats or NO Cats ?

I know it's been asked many times before but peoples opinions change over time so I'm asking again
BennyBoo

no cats....
Matt_D

100 cell, it can be an expensive downpipe change unless you know of a friendly mot tester
Jonmurgie

CAT's are for wimps

COme on, don't we all know a friendly MoT tester these days?
Silversea

It's on my "things to do list"......
I currently have Milltek downpipes but plan to up-grade to some 3" downpipes and a map tweek (MRC or Viper??   ).

I'm looking at Wagners or Loba as they'll supply with cats as I don't want any ballache come MOT time and doubt 100cpi cats will restrict flow too much......
Paintguy

I hate to come across as Mr Boring, but since cats are needed to legitimately pass an MOT, I'd never remove them fully.

Sure I can easily get a pass without them, but I'd be knowingly driving my car in an (according to VOSA) unroadworthy condition.

Feel free to ignore me
Mihnea

a good cat is a dead cat, I've always said it
MarkB

Mihnea wrote:
a good cat is a dead cat, I've always said it


Yes you have ... some peoples opinions change
calibra_se8

I'm going catless and keeping my RS4 downpipes/Milltek Cat-back for MOT time
dest

No cats here, passed the mot no problem
mikey-s

No cats. As mentioned, you won't struggle to get it mot'd, and what's the chances of the car being inspected by the plod? A million to one me thinks..
Silversea

mikey-s wrote:
No cats. As mentioned, you won't struggle to get it mot'd, and what's the chances of the car being inspected by the plod? A million to one me thinks..


Mikey, did your's pass the emission test without a problem or was it an "assisted" pass.  
Silversea

Mihnea wrote:
a good cat is a dead cat, I've always said it


Mihnea, how much of a difference are you likely to see between 3" with a 100cpi cat to a 3" without??
RS4 with the above, Milltek system and your filter??

Thanks.  
mikey-s

Sorry, I didn't mean the car will pass an emissions test, I meant there's plenty of 'friendly' mot testers around. If anyone in the NW area is stuck I can point you in the right direction..  
Silversea

Ahh, I'm with you.
Thanks.  
Jonmurgie

Silversea wrote:
Mihnea wrote:
a good cat is a dead cat, I've always said it


Mihnea, how much of a difference are you likely to see between 3" with a 100cpi cat to a 3" without??
RS4 with the above, Milltek system and your filter??

Thanks.  


Is it time for some popcorn again?
Silversea

Could be...
MarkB

Jonmurgie wrote:
Silversea wrote:
Mihnea wrote:
a good cat is a dead cat, I've always said it


Mihnea, how much of a difference are you likely to see between 3" with a 100cpi cat to a 3" without??
RS4 with the above, Milltek system and your filter??

Thanks.  


Is it time for some popcorn again?


I think it's a good question.
Jonmurgie

MarkB wrote:
Jonmurgie wrote:
Silversea wrote:
Mihnea wrote:
a good cat is a dead cat, I've always said it


Mihnea, how much of a difference are you likely to see between 3" with a 100cpi cat to a 3" without??
RS4 with the above, Milltek system and your filter??

Thanks.  


Is it time for some popcorn again?


I think it's a good question.


I was joking really - would love to know a proper before/after figure for 2.5" DP's with CATs vs. 3" DP's with no CAT's. I'll be going straight to the latter but still a good thing for potential upgraders to know
MarkB

I'd like to know the difference between 3" downpipes without and with 100cpi cats on a 500 ps B5. That is a fairer comparison.
Jonmurgie

I guess - though only option there would be the LOBA pipes or maybe the Wagner if they would do a set without CATs?

AFAIK the Milltek 3" isn't offered with CATs
MarkB

Loba offer both options but I would think it still resonably fair comparison to compare Wagner's latest 76mm with cats or Loba with cats to either Loba without or Milltek 3"

I think the Milltek have the 3" pipework for the longest length so should be the best for performance though the Wagner with nice smooth pipe, no welds are my current favourite. With or without cats

There is also Satans child downpipes but they are looking like 'a pipe dream' at the moment.
Jonmurgie

MarkB wrote:
There is also Satans child downpipes but they are looking like 'a pipe dream' at the moment.


tell me about it - been waiting for months now, about to go down another route as I want to get on!!!
KiwiRS4

I'm a dog man, so no cats from me.
Silversea

Silversea wrote:
Mihnea wrote:
a good cat is a dead cat, I've always said it


Mihnea, how much of a difference are you likely to see between 3" with a 100cpi cat to a 3" without??
RS4 with the above, Milltek system and your filter??

Thanks.  


Heardy

Just decatted mine. !!
RoGEK

me 2, no cat's at all...
otherwise Mihnea can't do his work properly in july
marc1

Jonmurgie wrote:
MarkB wrote:
There is also Satans child downpipes but they are looking like 'a pipe dream' at the moment.


tell me about it - been waiting for months now, about to go down another route as I want to get on!!!


Don't forget Jimbo's 3" & 16th
Graham

The least I would consider is a 100cpi cat, just to keep legal.
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