UP PIPE!!!
I'm pretty sure that only the Bugeye WRX's had up-pipe cats (or did in my case
). The new shape doesn't have them and the UK STi's have never had them.
None of the classics had a cat in the up-pipe.
Steve
). The new shape doesn't have them and the UK STi's have never had them. None of the classics had a cat in the up-pipe.
Steve
my93 only has cats in the downpipe and centre section, NOT the up pipe.
Standard up pipe is very restrictive though, H&S one for example lot better flowing but a bugger to fit, and not always a good fit either, can help with spool up if your planning on running higher boost though
Rich
Standard up pipe is very restrictive though, H&S one for example lot better flowing but a bugger to fit, and not always a good fit either, can help with spool up if your planning on running higher boost though

Rich
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