Go / no-go gates

The checks between each stage of a build, the same gates used in Ignition House build packets. If any check fails, stop and fix it before you spend on the next stage.

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Gate 0 — Before you start

Compression or leak-down within spec
Smoke test passed — no boost or vacuum leaks
Timing belt or chain status known
Budget set for this stage and the next

Gate 1 — Data ready

Wideband reading and logged in the ECU
Fuel pressure steady at idle and under load
All sensors reading correctly in the software

Gate 2 — Base map verified

Clean cold start and stable idle
Part-throttle AFR on target
Timing verified with a timing light
No knock events in logs

Gate 3 — Ready for boost / power

Fuel system headroom confirmed (injector duty and pressure)
Boost control working at the lowest target
Cooling stable after repeated pulls
Dyno booked for high boost or race use

Gate 4 — Final

All logs reviewed and signed off
Final map backed up with notes
The driver understands the limits and the warning signs

Ignition House · [email protected] · General guidance only. Follow your ECU manufacturer’s documentation, and get qualified help for anything you’re unsure about.