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Perrin Up-pipe - Subaru WRX STi 02+

Price :
  • Model: PSP-EXT-100
  • Manufactured by: Perrin Performance


Perrin designed their uppipe to lower your WRX's turbo spool time by 500 RPM's. This unit is constructed from T-321 stainless steel, is entirely tig welded, and has 1/2" thick flanges to prevent warping. Perrin has found through extensive testing that factory ECU does not use the EGT sensor in the uppipe for Air/Fuel adjustment, so their design eliminates it. The EGT sensor's readings are a fail-safe in case temperatures exceed 1800 degrees. As boost levels increase, the sensor will read falsely -- putting the car into "limp home" mode, decreasing performance and reliability.

Additionally the sensor is fragile and can be easily damaged during removal and installation, which could lead to the sensor breaking off and destroying the turbo. Therefore, this uppipe includes an EGT sensor bypass to eliminate all the problems associated with the factory sensor. Includes detailed, illustrated instructions (a must for this installation), all new studs, and a no check engine light guarantee. This is an extremely durable piece, constructed from stainless steel with 1/2" thick flanges and a polished finish. Works on all 2002-2004+ WRXs.


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