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dark purple 2008 Trailblazer LS 4.2L
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Discussion Starter #1
I am new to the forum and looking to upgrade my 2008 4.2 Trailblazer, really like the gibson stainless steel exhaust and found mostly positive reviews. Does anyone know if i will need a tune of the ECU to make it work properly (without setting off check engine light)
 
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