Karl Kustoms
Des Moines, Iowa, United States
Tunes Holley EFI on its own chassis dyno and engine dyno. Listed by Holley EFI as a dealer, so you can buy the ECU here too.
At a glance
- Tunes
- Holley EFISells too
- Dyno
- Chassis dyno and engine dyno
- Address
- Des Moines, IA · street not published
- Phone
- (855) 806-1147
- Website
- karlkustoms.com
Most watched on their YouTube

ZZ632/1000HP - Dyno Pull on 93 Octane Pump Gas · 53,294 views · Watch on YouTube ↗
Other dyno tuners nearby
- Lund Motors LLCAdel, IA · 22 mi · Holley EFI
- Just AutomotiveWilliamsburg, IA · 79 mi · Holley EFI
- Sublime SpeedOmaha, NE · 135 mi · Haltech
- IA Speed & SupplyOtter Creek, IA · 153 mi · Holley EFI
Still choosing an ECU?
Entry units from the brands Karl Kustoms 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.