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Thread: Read Me!!! Tuning How-To's & General information

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    hi friends please help me about gmc yukon 2007 default fan control esay tuning . send me data via image or hpt file.----my customers car yukon 2007 fan starting after 150 digree c.

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    Hi guys I have my 2018 Sierra l83 engine and so far I installed the TSP long tube headers
    The oxygen sensor are temporarily not switched on Because have some wrong extension can u guys give me some idea to Mach the all Bolton?s parts