Estimate how much power a naturally aspirated engine loses in thin or hot air.
The engine power at sea level and standard conditions.
Altitude in metres and air temperature in Celsius.
Naturally aspirated power tracks air density, which falls with altitude and heat.
A naturally aspirated engine loses roughly 3% of power per 300 m of altitude, because the air is thinner. Heat adds to the loss. The calculator works it out from the actual air density change versus sea level.
Far less. A turbo can raise boost to compensate for thinner air up to its limit, so forced-induction engines hold power much better at altitude than naturally aspirated ones.
On a naturally aspirated engine it cannot create air that is not there, but it can optimise fuelling and timing for the conditions. On a turbo engine, tuning can restore or increase boost within safe limits.
The desktop Softechpro Solutions software corrects checksums for 260+ ECU families and does DPF/EGR/AdBlue/DTC off, Stage tuning and DTC diagnostics offline.
See pricing — €299 one-time