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Old 14 Sep 2007, 05:53 PM   #1 (permalink)
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newbie needing help

i have recently purchased a 2001 51 plated wrx. i have had a cat back exhaust system fitted but was wondering if i can have the centre cat removed.
my questions are 1. is it worth doing 2. does it cause any problems with overboosting just removing the centre cat and 3. anyone know if it will still go through an mot with the centre cat removed.


any help appreciated
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Old 14 Sep 2007, 08:12 PM   #2 (permalink)
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Quote:
Originally Posted by wilko View Post
i have recently purchased a 2001 51 plated wrx. i have had a cat back exhaust system fitted but was wondering if i can have the centre cat removed.
my questions are 1. is it worth doing 2. does it cause any problems with overboosting just removing the centre cat and 3. anyone know if it will still go through an mot with the centre cat removed.


any help appreciated

cat back system,means the center cat/silence is removed,and straight pipe through to the back box as a replacement...

main cat is is the down pipe from the tubby!!..

a cat WILL be needed fro MOT's..........only scoobs not to need cats for mot's are the pre 94 models...

if you go for total Decat,it will probably need mapping to compensate the increased Exhaust gas flow....(plus smooth out any problems).
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Old 17 Sep 2007, 09:45 PM   #3 (permalink)
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also bear in mind if you remove the cat in the up-pipe you'll need it remapped
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