US 12 Speed & Custom
New Buffalo, Michigan, United States
Tunes Holley EFI on its own 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
- Chassis dyno · Chassis (any)
- Address
- New Buffalo, MI · street not published
- Phone
- (269) 231-5234
Other dyno tuners nearby
- Trick tuning & PerformanceElkhart, IN · 39 mi · Holley EFI
- RC AutoworksBridgeview, IL · 53 mi · AEM, MegaSquirt, Haltech, Holley EFI
- Sound PerformanceBensenville, IL · 61 mi · ECUMaster
- Auto Performance Modifications (APM Tuned)Villa Park, IL · 63 mi · AEM, Link ECU, MoTeC
Still choosing an ECU?
Entry units from the brands US 12 Speed & Custom 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.