2024 Gmc Duramax Tuner. Look no further than the new edge ez tuner! Additionally ppei is hands down the best tuning / custom tuner available when it comes to tuning any duramax, especially the l5p.

Expect improved fuel economy, better towing performance. Additionally ppei is hands down the best tuning / custom tuner available when it comes to tuning any duramax, especially the l5p.