Greg's Tuning Operation
Sikeston, Missouri, United States
Tunes FuelTech, Haltech and Holley EFI on its own Mainline AWD hub dyno. Listed by Holley EFI as a dealer, so you can buy the ECU here too.
At a glance
- Tunes
- FuelTech
- Haltech
- Holley EFISells too
- Dyno
- Mainline AWD hub dyno
- Address
- Sikeston, MO · street not published
- Phone
- 573-718-8733
- Website
- gregstuningoperation.com
Other dyno tuners nearby
- BALDWIN RACING LLCFriedheim, MO · 43 mi · Holley EFI
- Earth Motors / Rhino's Truck AccessoriesPoplar Bluff, MO · 46 mi · Holley EFI
- Grumpy's Garage and TuningMarion, IL · 69 mi · Holley EFI
- STL MUSTANGS LLCLeadington, MO · 77 mi · Holley EFI
Still choosing an ECU?
Entry units from the brands Greg's Tuning Operation tunes:
- FuelTech FT450from US$999
- FuelTech FT550LITEfrom US$1,429
- Haltech Nexus T1from US$935
- Haltech Nexus T2from US$1,215
How this listing was checked
Report a mistake on this page. Listed because there's evidence it tunes aftermarket ECUs and has its own dyno. "Sells too" means the ECU maker lists it as a dealer. Checked October 2026. Listings are free and shops can't pay for placement.