|03-23-2009, 01:34 PM||#1|
Join Date: Jan 2009
2010 WRX Limited 5DR
Went from Perrin to Stock Sti catback on 05 4EAT WRX -- Tune needed?
I purchased a 2005 4EAT WRX with 83k miles on it.
The car came with the older model Perrin Catback on it.
I have no idea if it was tuned by the person who owned it before me.
I recently took off the Perrin catback and put on a stock 06 STi catback (since they are interchangeable).
I know that 05 models need tuning when you change the catback.
Here is the question...do I need to get a tune going back to the sti stock cat back (NOT the WRX)?
Or since it is from the factory, can I just leave it be?
Do I risk major engine problems by not getting a tune?
Other information: The car is my daily driver. I do not race, rally or do anything of the sort. I do like to gun it onto the highway, but other than that I dont beat on it at all. I spend at least 20 minutes a day in stop and go traffic.
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|03-24-2009, 03:44 AM||#2|
Join Date: Mar 2008
Chapter/Region: South East
All you've changed is the catback? Are there any other modifications on the car?
You shouldn't need a tune from a catback change, as you are not making any serious modifications to the car with that change, other than an ever-so-slight reduction in flow in your case. The changes that benefit from or need tunes include downpipes, injectors, intakes, intercoolers, turbos, etc.
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