Is the std P1 backbox stainless steel
#2
I it mild steel.
Looks nice and sounds slightly nicer than the pee shooter..
My turbo spooled a little quicker than the pee shooter but that might be due to the pee shooter having done lots of miles..
but I thnink the P1 box is a little freer flowing..
It is an STi back box basically.. and identical to as fitted to any classic STi etc...
JGM
Looks nice and sounds slightly nicer than the pee shooter..
My turbo spooled a little quicker than the pee shooter but that might be due to the pee shooter having done lots of miles..
but I thnink the P1 box is a little freer flowing..
It is an STi back box basically.. and identical to as fitted to any classic STi etc...
JGM
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