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We specialize in Cummins, Duramax, Powerstroke and Jeep diesel performance.

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Precision Tuning

Top Gun Diesel was started simply for the love of diesels. Our team has mechanical engineering experience focused on internal combustion engines and the knowledge to conquer any diesel related challenge. We can custom tune your truck, build you a competition sled pulling or drag racing engine, or simply sell you parts. Click through the list below for information on ordering custom tunes.

  • EFI Tuning Error Codes
  • GMC Error Codes
  • POWERSTROKE Error Codes
  • DODGE Error Codes

Diagnostic Trouble Codes