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01.Catback Adapter Flange
02.Flex-joint uppipe [Stainless Steel]
03.Cast Turbo Outlet [VF36-37 Impreza Twinscroll]
04.Downpipe Adapter Flange
05.3" Catback Exhaust [08+ STI Hatch]
06.3" Catback Exhaust [STI Sedan]
07.3" Downpipe [metal race cat] 5MT/6MT
08.Cast Turbo Outlet [Standard]
3" Downpipe [metal race cat] 5MT/6MT


3" Downpipe [metal race cat] 5MT/6MT

This 3inch downpipe (or Frontpipe) is constructed from high-grade stainless steel, ensuring longevity along with great looks. It also features our special cast iron outlet which incorporates a splitter to deflect wastegate gases thereby improving turbo spool up.
The high-temp cast outlet removes a major bottleneck present on the factory exhaust system with its large bellmouth design with splitter for the wastegate. A stock exhaust flange simply has a blank plate at the wastegate, putting a major lid on performance.
Your stock down pipe also uses one or two fairly restrictive catalytic converters.
The AVO front pipe addresses this issue with a single large high-flow metal catalytic converter, larger than available from most other makers.
All this adds up to a huge decrease in back pressure and a big increase in performance. Use your turbo to its full potential!

Applied Models:
Impreza WRX 5-door: 2008+ [2.5-liter turbocharged]
Impreza WRX 4-door: 2008+ [2.5-liter turbocharged]

Impreza WRX STI 5-door: 2008+ [2.5-liter turbocharged]

This product was added to our catalog on Tuesday 04 May, 2010.
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3" Catback Exhaust [08+ STI Hatch]
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