Build profile
Help us understand your car as well as you do
For new builds or existing tunes, plan about 5–10 minutes to work through your combo.
We collect these details for deterministic physics and math and to ground our AI in your exact hardware — so setup guidance can be as accurate as possible.
Every field is required so the profile matches your real hardware, except injector part numbers (optional).
One section at a time — go back whenever you like. Exit leaves this flow without saving.
Identity
Pick make and model from the lists, or choose Other and type your own.
Engine & fuel
Core engine and fuel fields are required.
Engine architecture
Select architecture… AMC V8 (290–401)
AMC inline-6 (232–258) Aston Martin V12 / V8 AM Audi EA839 V6 (3.0T) BMW V8 (N63 / S63 twin-turbo)
BMW high-rev V8/V10 (S65 / S85)
BMW inline-6 (M / N / B / S performance) Buick 3800 Series II/III V6
Buick nailhead V8 Chevrolet W-series (348 / 409 / Z11)
Chevrolet big-block (Mark IV / tall deck)
Chevrolet inline-6 (Stovebolt / 230–292)
Chevrolet small-block (Gen I/II, incl. LT1 1992–97) Chrysler B / RB big-block (383–440)
Chrysler Gen III Hemi (5.7 / 6.1 / 6.4)
Chrysler Gen III Hemi + eTorque mild hybrid
Chrysler LA / Magnum small-block (273–360)
Chrysler Pentastar V6
Chrysler Slant-6
Chrysler classic Hemi (426 / 392 early)
Chrysler supercharged Hemi (Hellcat / Demon / Redeye)
VM Motori 3.0L EcoDiesel V6 (Ram 1500 / Jeep Wrangler / Gladiator / Grand Cherokee) Cummins B-series inline-6 diesel (5.9L & 6.7L — Ram 2500/3500 & cab-chassis pickups)
Cummins ISV5.0 V8 (Nissan Titan XD) Ferrari / Maserati F154 / related V8
Ferrari V12 Ford 3.0L Power Stroke V6 (F-150 diesel)
Ford 385-series (429 / 460)
Ford Boss 429 (semi-hemi)
Ford Cleveland / 351C / 400M
Ford Coyote / Voodoo (5.0 / 5.2 DOHC)
Ford EcoBoost V6 (2.7 / 3.0 / 3.5)
Ford EcoBoost inline-4 (2.0 / 2.3)
Ford FE (332–428, incl. 427 side-oiler)
Ford Godzilla 7.3L pushrod V8
Ford Modular (4.6 / 5.4 / 5.8 2V/3V/4V)
Ford Power Stroke diesel V8 (7.3 / 6.0 / 6.4 / 6.7 — Super Duty pickups)
Ford Y-block V8
Ford flathead V8
Ford small-block (Windsor / 302 / 351W) Cadillac Blackwing DOHC V8 (4.2L)
Cadillac Northstar / LH2 / Aurora V8
GM 60° V6 (3.8 / 3800 / LFX family)
GM Duramax 2.8L I4 (Chevrolet Colorado / GMC Canyon diesel)
GM Duramax 3.0L I6 (Silverado 1500 / Sierra 1500 — LM2 / LZ0)
GM Duramax diesel V8 6.6L (Silverado HD / Sierra HD — LB7 through L5P)
GM Ecotec / LNF / LE5 (inline-4)
GM LS / LS-based (Gen III/IV, incl. LSA, LS9)
GM LT (Gen IV truck/car, incl. LT1/LT4 small-block)
GM LT (Gen V truck/car)
GM truck big-block (Vortec 8100 / 8.1L) Honda B / K / F / H (performance)
Honda J-series V6 (VTEC performance)
Honda L15 turbo (Civic / Integra) Hyundai/Kia Lambda V6
Hyundai/Kia Theta II / Smartstream (turbo) Jaguar AJ / Ingenium (performance) Lamborghini V10
Lamborghini V12 Lotus (Toyota 2ZZ / 2GR swap context) Mazda Skyactiv-G (piston)
Mazda rotary (12A / 13B / 20B / Renesis) McLaren twin-turbo V8 Mercedes-Benz AMG V12
Mercedes-Benz V8 (M113 / M156 / M177 / AMG)
Mercedes-Benz inline-6 (M256 / OM656) Mitsubishi 4B11 / 4B12
Mitsubishi 4G63 / 4G64 Nissan VG V6
Nissan VQ V6
Nissan VR (VR38DETT, etc.)
Nissan ZD / RD / YD diesel (Frontier / Titan global / cab-chassis, not Titan XD Cummins)
Nissan inline (CA / SR / KA / RB) Oldsmobile V8 (Rocket, incl. diesel) Air-cooled flat-6 (classic Porsche / VW Type 4)
Electric motor(s) / EV conversion
Industrial / marine / aviation-derived swap
Motorcycle V-twin / performance bike engine swap
Other / mixed / fully custom Pontiac V8 (389–455) Porsche flat-4 (718 turbo)
Porsche flat-6 (Mezger / MA1 / 9A2) Subaru boxer (EJ / FA / FB) Toyota AR / Dynamic Force (4-cyl / V6)
Toyota AZ / GR 3-cyl / 4-cyl
Toyota GE non-turbo (context NA)
Toyota GZ V12 / UR V8 (performance)
Toyota JZ (1JZ / 2JZ)
Toyota UZ V8 (1UZ–3UZ)
Toyota diesel I4/I6 (Hilux / Land Cruiser 70-series / global cab trucks) VW Group W12
VW VR6 / R32 / narrow-angle
VW/Audi EA888 / EA113 (2.0T) Volvo whiteblock / modular 5-cyl / T6
Cylinders
Select cylinders…
N/A (rotary / electric)
2
3
4
5
6
8
10
12
Engine family / trim
Displacement (L)
Aspiration
Select… Naturally aspirated
Turbo
Supercharged
Nitrous
Combo (turbo + nitrous)
Choose how the engine makes boost or extra power. When turbo, supercharged, nitrous, or combo is selected, a follow-up question appears for how many (turbos, stages, or kits). Naturally aspirated stays at zero adders.
How many turbos?
1 turbo
2 turbos
3 turbos
4 turbos
Twin-scroll single turbo counts as one turbo.
How many superchargers or stages?
1 stage
2 stages
3 stages
Roots, screw, or centrifugal — count separate blowers or staged systems.
How many nitrous kits?
1 kit
2 kits
3 kits
4 kits
Single stage vs. separate kits (e.g. fogger + plate) — count what you run.
Combo setup
Turbo(s) plus nitrous. We store the sum as the adder count for the profile.
Turbos
None
1 turbo
2 turbos
3 turbos
Nitrous kits
None
1 kit
2 kits
3 kits
Rev limit (RPM)
Fuel
Select… Pump E10
E85
Race gas
Methanol
Other
Oxygenated fuel?
More about this field
?
Yes if the fuel contains oxygen-bearing components (common in some race fuels) that change how much fuel you need vs pump gas.
Select…
Yes
No
Fuel purity / blend known?
More about this field
?
Yes if you know the real blend from supplier data, a flex-fuel sensor, ethanol testing, or consistent supplier batching — not a guess.
Select…
Yes
No
Fuel system detail
Injector layout, sizes, and fuel pressure. Secondary injector fields appear only when you run staged injectors.
Cylinder heads
Casting, chamber, valves, and spring setup — all fields in this step are required.
Rotating assembly
Crank, dimensions, rods, pistons, and compression ratio are required in this step.
Camshaft
Cam type, brand/grind, and duration @ .050 (intake and exhaust) are required in this step.
Ignition
Trigger, coils, ignition hardware, and whether base timing was verified with a light.
Air & idle
Throttle actuation, bore size, idle air strategy, and target idle RPM.
Boost control
Wastegate reference and boost-control strategy. Shown for turbo, supercharged, or combo (turbo + nitrous) setups.
Wastegate spring / reference
Boost control disabled for startup?
Select…
Yes
No
Unknown
N/A (NA)
CO₂ / dome control
Select…
Yes
No
Unknown
N/A
Ambient & charge air
Required context for fueling and spark tune generation. High-load IAT is required for boosted and nitrous setups.
ECU
Same platforms we highlight on the marketing site — Holley, FuelTech, MoTeC, Haltech, HP Tuners, or other.
For datalogs, every ECU listed here requires a CSV export from that manufacturer’s tuning or datalog software.
Choose Other / not listed as manufacturer to type your ECU vendor and model; use Other — specify below in the model list when a named brand’s model isn’t listed.
ECU manufacturer
Select ECU brand…
Holley
FuelTech
MoTeC
Haltech
HP Tuners
Other / not listed
ECU manufacturer (name as on the unit or software)
Load mode
Select… Speed density
MAF
Hybrid
MAP sensor (bar rating)
Select…
1 bar (naturally aspirated)
2 bar
3 bar
4 bar
5 bar
6 bar
7 bar
Unknown
Transmission & drivetrain
Transmission type, model, forward gear count, and converter or clutch are required in this step.