Mustang Dark Horse tune. Nashville.
S650 Dark Horse with the Gen-4 Coyote is a refined platform out of the box — Ford left the easy power on the table. Stage 1 dials in throttle response, unlocks timing, and bumps peak power without touching hardware. Stage 2 is where the real numbers start.
Every Carma tune includes.
Real prices, no dyno-number runaround. Here's what comes with every flash — at no extra charge.
What we do for the dark horse.
The Gen-4 Coyote with dual port + direct injection is mapped tighter from the factory than the older S550 GT, but still has 20–30 wheel hp on the table on 93 octane. Stage 2 with long-tubes + cold air + intercooler-equivalent supporting mods is where Dark Horse customers see real returns.
- Factory file pulled and archived (free stock-revert anytime)
- Gen-4 Coyote specific Coyote 4 mapping — not an S550 carryover
- Safe map flashed and road-tested in-house
- Flex-fuel (93/E85) mapping available
- Lifetime support on revisions
Pricing for the mustang dark horse.
No dyno-number games, no hard sell. Drive it, and if the tune isn't for you, we revert to stock at no charge. That's how confident we are in the map.
Common questions.
Is the Dark Horse tune different from a regular S650 GT tune?
Yes — the Dark Horse has different cam timing, intake manifold, and ECU calibration from the base S650 GT. We use platform-specific maps.
Will tuning void my warranty?
Same Magnuson-Moss protection as any modification. Powertrain is the risk surface. We offer free stock-revert before planned dealer visits.
Will the 6-speed manual hold up?
Yes for Stage 1 and Stage 2 power. Built motor territory or high-boost-on-E85 builds may need clutch upgrade. We'll scope on the call.
How long does the Dark Horse appointment take?
Stage 1: 2–3 hours. Stage 2 with mods to install: half-day to full day depending on parts.
Book your Mustang Dark Horse tune.
Drop it off in the morning, drive it home tuned by end of day. 1035 3rd Ave S, Nashville, TN 37210 · Mon–Fri 8 to 5.