manifold & sports cat

1. al_VTR East Anglia Joined: Sep 2004 Essex Posts: 6513 (broken) mk1 Saxo VTR, MG ZS, BMW 3 Series

   #1 3rd August 2005, 03:03

   any idea wot kind of gains i can expect from a 4-1 manifold & sports cat ?
   
   they're quite high on the list since i've had my new exhaust system put on
2. Ratty Established Member Joined: Jun 2003 United Kingdom (England) Posts: 1682

   #2 3rd August 2005, 03:28

   no point in sports cat as its still restrictive, get manifold and decat and keep cat for mot time.
3. don55 Established Member Joined: Feb 2004 southampton United Kingdom (England) Posts: 1881 Super stripped VTS transit camper iveco work hor

   #3 3rd August 2005, 04:56

   yup ratty has the right idea
4. al_VTR East Anglia Joined: Sep 2004 Essex Posts: 6513 (broken) mk1 Saxo VTR, MG ZS, BMW 3 Series

   #4 4th August 2005, 18:56

   cheers guys
   
   not sure i could be arsed with having to change the cat over everytime i had the MOT.
   
   but what kinda power gains would i expect from the two options ?
5. Ratty Established Member Joined: Jun 2003 United Kingdom (England) Posts: 1682

   #5 4th August 2005, 18:59

   not much from either to be honest, but further up the rev range it would feel more loose with the 4-1 and decat, sports cat wouldnt be much different from how it is now.
6. saxx Saxperience Post Whore Joined: May 2005 Yeovil United Kingdom (England) Posts: 9202 A4 S Line SE 170

   #6 4th August 2005, 19:03

   ok ive heard completely different - apparently the manifold will boost the power a bit aslong as done with full system....
   
   ....but i lost interest once shown the price of that and brand new suspension!
7. Ratty Established Member Joined: Jun 2003 United Kingdom (England) Posts: 1682

   #7 4th August 2005, 19:48

   the cat is restrictive, by putting a manifold you will free up some power but the cat will restrict it so not much will be free, same with a sport cat, its a cat thats not as restrictive but its still restrictive, if you loose the cat, put a manifold on and an aftermarket system on you will free up ponies.
8. saxx Saxperience Post Whore Joined: May 2005 Yeovil United Kingdom (England) Posts: 9202 A4 S Line SE 170

   #8 4th August 2005, 19:49

   Cant u buy a non restrictive cat though?
9. Ratty Established Member Joined: Jun 2003 United Kingdom (England) Posts: 1682

   #9 4th August 2005, 20:54

   its got mesh in its always gonna be restrictive, de-CAT is a non restrictive errr cat
10. Dan Saxperience Hardcore! Joined: Dec 2003 Middlesbrough United Kingdom (England) Posts: 23676 Seat Leon FR

    #10 6th August 2005, 00:04

    sports cat is far more expensive too.