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  1. R

    Lml egr delete

    Efi live with egr delete I'm new to this forum so hopefully I'm posting this right. I have a 2015 Denali and am seriously considering getting an egr delete, 5" exhaust from the turbo back, with efi live tuning. How much of a hp/mpg gain should I expect to see? And what is a reasonable price to pay?