Physics-based starting tunes for turbo, N/A, EFI and carbureted builds — a base map that runs, in your ECU's own format.
Every car here was predicted from its spec sheet, then scored against its own datalog. We publish the error — nothing fitted to the answer.
Stroked 3.75 L 6G72, big single-turbo conversion, front-mount intercooler, on E85.
From the spec sheet alone, on boost and E85 — essentially zero average bias.
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Twin-turbo all-aluminum 327 LS, water-to-air intercooled, on Holley EFI.
Fired and driving on ForeTune's starting tables — tightest spread of any car.
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1.6 L turbo Miata BP-T swap, Mazda 16-valve, on a Haltech Elite.
Ran great on the first map — and the log caught that he was making 10.2 psi, not 6.
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333 ci stroker Windsor, naturally aspirated, big COMP cam, Trick Flow top end, on a FuelTech standalone.
The car that taught the model: his cam card moved our part-load prediction 24 VE points. Every build sheet now asks for all four cam numbers.
See the full breakdownDot = average error across every scored cell · shaded band = typical spread (RMS) · every cell scored at its measured lambda.
*Nova: 19 of 45 scored cells fall inside the logged MAP range; the rest come from an earlier session.
The more you fill in, the closer the starting map. Leave optional fields blank and ForeTune estimates them.