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| Perrin Performance Uppipe for 02-09 WRX & 04-09 STi |
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The Perrin WRX/STi uppipe has been show start turbo spool 500RPM earlier. Constructed from tig-welded T-321 stainless steel with 1/2" thick flanges, the Perrin uppipe is designed to handle the extreme heat of your Subaru's turbocharged engine without warping or cracking. |
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02-05 WRX models have an EGT sensor in the factory uppipe. Perrin has chosen to eliminate the factory EGT sensor, which the car only uses in the unlikely event that both oxygen sensors fail. As boost levels increase, the EGT sensor can read falsely and trigger "limp" mode, reducing performance; even worse, the sensor could possibly break off and damage the turbocharger. To combat this, Perrin has eliminated the sensor bung in their uppipe as it is unnecessary and can cause turbo damage. When removing this sensor, you will need a resistor (about 25 cents from Radio Shack)to prevent a check engine light (CEL) -- just bring in the picture below to get what you need. |
The Perrin uppipe includes detailed instructions and new studs to attach to your turbo. It does NOT include gaskets, which we reccomend replacing, and you will need a resistor for the 02-05 WRX, see the picture below.
Perrin Uppipe Installation Instructions (.PDF) -- Right Click & "Save AS"
Shipping costs are calculated upon checkout.
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NOTES:
1. Only the 02-05 WRX have a pre-turbo catalyst, making a catless uppipe a major performance improvement.
2. The 06-09 WRX and 04-08 STi do not have a cat in the uppipe. The inside of the factory uppipe is corrugated, however, so an aftermarket uppipe is still a good modification.
FITMENT: 2002-2009 WRX & 2004-2009 STi
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