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decat advise

Old 25 January 2015, 09:54 AM
  #31  
Newscoobyguy
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Yes it was done at Alan Jeffrey got a receipt cost 350
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Old 25 January 2015, 11:05 AM
  #32  
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Had a mate a mechanic look he said it's the pressure sensor that's not in got all the old exhaust and he could see it was that one
he could plug in didn't have the right gear
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Old 16 April 2017, 06:08 PM
  #33  
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Impreza 2000 turbo. Does the removal of any cat involve a remap have asked numerous people who just go completely off topic and start talking about upgrading fuel pump etc. I'm aware of this I want an idiot answer please. Can I remove any cat without a remap . And I don't mean the sort of answer...... yh you can but you can't drive it etc etc
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Old 16 April 2017, 08:02 PM
  #34  
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Originally Posted by Jamiest View Post
Impreza 2000 turbo. Does the removal of any cat involve a remap have asked numerous people who just go completely off topic and start talking about upgrading fuel pump etc. I'm aware of this I want an idiot answer please. Can I remove any cat without a remap . And I don't mean the sort of answer...... yh you can but you can't drive it etc etc
Yes it does. Removing cats needs a re-map. However they are a lot of cars that have had them removed and haven't had a head gasket or piston ring fail...yet.

Last edited by Cambs_Stuart; 16 April 2017 at 09:07 PM.
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Old 16 April 2017, 08:32 PM
  #35  
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Originally Posted by Cambs_Stuart View Post
Yes it does. Removing cats needs a re-map. However they are a lot of cars that have had them removed and haven't had a head gasket or piston fail...yet.

Finally someone with a yes or no answer ..lol
Thank you
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Old 16 April 2017, 08:57 PM
  #36  
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yes remap needed , but .. my fsti with a standarc cat v one with a sports cat , more power produced by sports cat one , one with a standard cat drives better and is just as fast so work that one out ?? same boost from both cars and same mods other than the cat difference
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Old 16 April 2017, 09:17 PM
  #37  
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Originally Posted by Vxr2010 View Post
yes remap needed , but .. my fsti with a standarc cat v one with a sports cat , more power produced by sports cat one , one with a standard cat drives better and is just as fast so work that one out ?? same boost from both cars and same mods other than the cat difference
Thanks. Guess the sports cat v standard doesn't make that much performance difference alone then . I'm new to Scoobys apart from wanting one since I was 8 .
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Old 16 April 2017, 09:46 PM
  #38  
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if you decat the downpipe it wont pass a standard mot , based on the cost of a cat plus a remap i don't think it's worth doing unless you are after every extra bhp , plus my fsti with standard cat drives better , slightly more turbo noise with the sports cat but that's the most noticeable thing
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Old 17 April 2017, 09:19 AM
  #39  
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Originally Posted by Vxr2010 View Post
if you decat the downpipe it wont pass a standard mot , based on the cost of a cat plus a remap i don't think it's worth doing unless you are after every extra bhp , plus my fsti with standard cat drives better , slightly more turbo noise with the sports cat but that's the most noticeable thing
That doesn't sound right; a sports cat with map should gain approx 50 bhp over standard, and is a night and day difference
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Old 17 April 2017, 09:56 AM
  #40  
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a sports cat v standard cat is a small increase , the comparison is the same map on both cars one with a standard cat one with a sports cat , very minimal difference and no noticeable speed difference , in simple terms you get a bit more power but it is not noticeable on the road
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Old 18 April 2017, 03:20 PM
  #41  
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Originally Posted by Vxr2010 View Post
if you decat the downpipe it wont pass a standard mot , based on the cost of a cat plus a remap i don't think it's worth doing unless you are after every extra bhp , plus my fsti with standard cat drives better , slightly more turbo noise with the sports cat but that's the most noticeable thing
You can always decat the downpipe and leave the 2nd original factory fit cat in place (assuming it's still there). This will pass a standard MOT.

A remap is always necessary after any decat or sports cat replacement.
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Old 18 April 2017, 07:58 PM
  #42  
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it's if it's worth doing due to cost of cat replacement pipe or sports cat if you do the down pipe , a good way forward is get a straight through mid section you get a bit more noise better breathing and no re map needed
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