Toyota Supra Mk5 tune. Nashville.
The B58 3.0 turbo in the Mk5 Supra (and BMW Z4 M40i, M240i, M340i) is one of the most aggressively tune-responsive single-turbo straight-six platforms ever produced. Stage 1 alone picks up 80+ wheel hp on stock turbo + 93 octane. Built turbo + E85 builds run 700+ wheel hp.
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 supra mk5.
Stage 1 unlocks boost, timing, and fueling across the B58's broad envelope. The platform is conservatively tuned from the factory — there's real headroom on 93 octane and dramatic headroom on E85. Built turbo + port injection + E85 territory is where the platform shows its ceiling.
The B58 is BMW's engine and the tuning stack is BMW's too — good news, because it's one of the best-supported turbo sixes in the world. 2020 cars flash straight through the OBD port; 2021+ DMEs ship locked and need a one-time bench unlock, which we do in-house the same day — the same ECU unlock service we run for BMW. Closed-loop boost and load-based tables mean the tune adapts to weather and fuel; this isn't a static map.
- Stock file pulled and archived (free stock-revert anytime)
- Custom-mapped per ECU revision
- Safe map flashed and road-tested in-house
- Flex-fuel mapping standard on Stage 2 builds
- Bench-flash support for built engines
- Lifetime support on revisions
Pricing for the toyota supra mk5.
Mods we pair with this tune.
The Supra mod path is textbook single-turbo: cut restriction, add cooling, feed it ethanol.
- Catted downpipe — the single biggest restriction on the car — big mid-range torque with the matching map.
- Front-mount intercooler + charge pipes — the stock plastic pipes pop and the stock cooler soaks. Solves both.
- HPFP upgrade — the high-pressure pump is the E85 bottleneck; unlocks serious blend headroom.
- Intake — modest gains, big sound — worth it inside a Stage 2 package.
- ZF8 transmission calibration — holds the new torque properly and shifts noticeably faster.
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.
Will Toyota detect the tune?
Some Mk5 ECUs log boost events. Free stock-revert before any planned dealer visit.
Stock turbo limit?
Stock turbo is good to ~500 wheel hp on Stage 2 + supporting mods. Past that, hybrid or upgrade turbo is the path.
ZF8 — does the transmission hold up?
Yes for Stage 1 and Stage 2 power. Past 600 wheel hp we recommend TCM tune in addition.
How long does the Supra appointment take?
Stage 1: 2 hours. Stage 2 with mods to install: half-day to full day.
My Supra is a 2021+ — can you even flash it?
Yes. The 2021+ DME ships locked; we bench-unlock it in-house (one-time, permanent), then it flashes like any other B58. Same-day with the appointment.
How much E85 can I run on stock fuel?
Around E30 blends on the stock high-pressure pump — and the B58 loves it; ethanol blends are the best power-per-dollar on this platform. The HPFP upgrade opens up E50+ territory.
Does this apply to the Z4 M40i and M340i too?
Same B58, same DME family, same process — Z4 M40i, M340i, and M240i follow the identical path, unlock included where the model year needs it.
Book your Toyota Supra Mk5 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.