SOUTHERN SPEED LLC
Tupelo, Mississippi, United States
Tunes Holley EFI on its own Mustang MD-1750 chassis dyno. Listed by Holley EFI as a dealer, so you can buy the ECU here too.
At a glance
- Tunes
- Holley EFISells too
- Dyno
- Mustang MD-1750 chassis dyno · 2WD chassis
- Address
- 2028 Mccullough Blvd.
Tupelo, MS 38801 - Phone
- (662) 842-3799
- Website
- southernspeedracing.com
Other dyno tuners nearby
- The HorsePower FactoryFinger, TN · 75 mi · Holley EFI
- Chris Terry RacingTrinity, AL · 93 mi · Holley EFI
- Hinson Motorsports IncIrondale, AL · 130 mi · Holley EFI
- Multiple Viscosity MotorsportsGadsden, AL · 161 mi · Haltech, Link ECU
Still choosing an ECU?
Entry units from the brands SOUTHERN SPEED LLC tunes:
- Holley Terminator Xfrom US$1,600
- Holley Terminator X Maxfrom US$2,000
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.