De cat
28 July 2008, 12:10 AM
#2
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Dont know about damage but if you take the cats off you may aswell chuck your cd player in the bin too
If your cars for track use its worth doing but for road just get a cat back system
If your cars for track use its worth doing but for road just get a cat back system
28 July 2008, 10:50 AM
#6
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As stated, a decat is the way to go in terms of performance. The comments about the noise are rubbish. You'll notice a deeper tone but it is not a great deal louder. The backbox is key thing in terms of noise and an STI backbox will not be overly loud with a decat.
You do need to know a friendly MOT place or you need to replace your standard downpipe in order to pass an MOT on emissions. My first MOT next year with mine, so if it proves too much hassle I will go the PPP sports cat route.
It doesn't damage an engine either. Think about what you are doing - allowing it to breathe more freely. You may benefit from a remap though in order to get the full potential of the mod.
You do need to know a friendly MOT place or you need to replace your standard downpipe in order to pass an MOT on emissions. My first MOT next year with mine, so if it proves too much hassle I will go the PPP sports cat route.
It doesn't damage an engine either. Think about what you are doing - allowing it to breathe more freely. You may benefit from a remap though in order to get the full potential of the mod.
28 July 2008, 02:20 PM
#7
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As stated, a decat is the way to go in terms of performance. The comments about the noise are rubbish. You'll notice a deeper tone but it is not a great deal louder. The backbox is key thing in terms of noise and an STI backbox will not be overly loud with a decat.
You do need to know a friendly MOT place or you need to replace your standard downpipe in order to pass an MOT on emissions. My first MOT next year with mine, so if it proves too much hassle I will go the PPP sports cat route.
It doesn't damage an engine either. Think about what you are doing - allowing it to breathe more freely. You may benefit from a remap though in order to get the full potential of the mod.
You do need to know a friendly MOT place or you need to replace your standard downpipe in order to pass an MOT on emissions. My first MOT next year with mine, so if it proves too much hassle I will go the PPP sports cat route.
It doesn't damage an engine either. Think about what you are doing - allowing it to breathe more freely. You may benefit from a remap though in order to get the full potential of the mod.
Thats funny when i had a de-cat pipe on my wrx it was alot louder than with it on hence why i put the cat back on
my car couldnt pass a mot with it off too 
Last edited by Ste98Turbo; 28 July 2008 at 02:46 PM.
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