longtube headers

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    2015 Chevy Tahoe 5.3l with long tube headers (tune help)

    I have a 2015 Chevy Tahoe I recently installed speed engineering long tube headers and I need someone to point me in the right direction for a tune using hptuners. I know someone will say black bear performance but I’m kinda looking for a cheaper option. I already have hp tuners mpvi3 and I...

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