Borla Hush installed but kept Donut Flange
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Join Date: Apr 2003
Location: Las Vegas
Posts: 174
Car Info: 2005 STI
Borla Hush installed but kept Donut Flange
just curious. i installed the Borla onto my HKS downpipe but since the borla has a donut flange and changes from 3" to 2.5" where it meet the HKS's 3" flat flange, would this hurt performance much? a friend told me that if there is a 2.5" kink anywhere, its basically a 2.5" exhaust system. There are no leaks in the system and the car runs well.... but i cant really remember what it felt like when i had my HKS exhaust.
2002 wrx sedan
mods....
AP stage 2
up pipe
down pipe
Borla Hush
K&N filter
thanks
eric
2002 wrx sedan
mods....
AP stage 2
up pipe
down pipe
Borla Hush
K&N filter
thanks
eric
Last edited by wonton2049; 12-05-2004 at 01:12 PM.
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