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Old 09-01-2005, 10:39 PM   #1
Scooby Specialist
Member#: 46018
Join Date: Oct 2003
Chapter/Region: MWSOC
2003 wrx
silver(mostly stock)

Default Fine tuning a dyno tune after minor mods?

this weekend i put a 6-speed into my 03 wrx. i had to change a few things. how much difference would these things make?

- had to cut cat out of vishnu downpipe. replaced with 3" stainless tube.
- rear o2 sensor also hit tranny. can i just use a wire type cel fix and leave the sensor out with a plug in the exhaust?
- how much difference would it make if i put my stock header and vishnu uppipe back in and did away with the gpmoto equal length header. (it sounds like a lawnmower right now.).

would it make a significant difference in tuning (for the worse), if i were to change the header on top of the other two previously mentioned? do i need to get retuned?
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