up pipe
up pipe
16 June 2011, 01:42 PM
#2
17 June 2011, 09:19 AM
#4
Scooby Regular
I've had a few mods done to my WRX but I can feel the difference the 'big Harv de-cat up-pipe' made more than any other mod.
I know STI owners report 300rpm earlier spool and about 10bhp extra but it must be far more on a WRX being a cat there.
I know STI owners report 300rpm earlier spool and about 10bhp extra but it must be far more on a WRX being a cat there.
17 June 2011, 02:28 PM
#5
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You'll also get increased engine noise inside the car once de-catting the up-pipe (I noticed it more than when I removed the downpipe cat on my bug!)
Definitely worth removing though as you do hear horror stories about bits of the cat going through the turbo and destroying it!
Harvey Smith up-pipe on mine too (Originally a H&S one)
Definitely worth removing though as you do hear horror stories about bits of the cat going through the turbo and destroying it!
Harvey Smith up-pipe on mine too (Originally a H&S one)
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