Nationwide mail-in Peterbilt ECM clone service — every PACCAR MX-13 / MX-11 MCM, Cummins X15 / ISL9 / B6.7 CM-family, legacy Caterpillar C15 / C13 / 3406E ADEM-III / ADEM-IV (the iconic Pete + Cat heritage), Detroit Series 60 DDEC, and Cummins N14 / M11 ECM across Peterbilt 579, 389 (the iconic owner-op long-nose), 567, 520, 365, 348, 337, 220, and legacy 379 / 359 / 387 / 384 / 386 — 1990 through 2026. PACCAR ESA + Davie4/5 + Cummins Insite + Cat ET + DDDL bypass — no Peterbilt dealer, no PACCAR Connect / SmartLINQ re-pairing, no TX-12 re-pairing. 1:1 EEPROM + Flash clone preserves engine serial, VIN, rating code (MX-13 sold at 380-510 HP via rating code, X15 at 400-565 HP), calibration ID, customer parameters, injector trim codes, DPF/DEF/SCR values, NOx learned values, PACCAR Connect / SmartLINQ pairing, TX-12 / TX-18 automated manual pairing, Bendix Wingman ADAS calibration, and any Pittsburgh Power / 5-Star / Tre-Flo / Custom Cat / EZ-Lynk / EFI Live / Diesel Power Source / PPEI / Banks / Hot Shot's aftermarket overlay. Same-day processing for ECMs received before 2pm. Priority same-day queue for Pete owner-operators. Save $3,500-$10,500+ vs. PACCAR dealer ECM + ESA programming.