Lexus IS 250 — naturally aspirated petrol engine calibration
Dyno testing and calibration of a modified Lexus IS 250 with revised intake and exhaust systems.
This Lexus has a naturally aspirated petrol engine and modified intake and exhaust systems. The video describes it as a 2.5-litre model fitted with a 3.0-litre engine. Without a turbocharger, software alone typically offers less scope for a power increase than it does on a turbocharged engine, making measured results especially useful.
Before calibration, the dyno recorded 254 hp and 316 Nm. After changes to the engine ECU calibration and catalyst-related diagnostics, the result was 261 hp and 330 Nm. The video also mentions a rev limit of 7,000 rpm.
These figures apply to this modified car, not to a standard Lexus IS 250. Any comparison with factory specifications should take the engine swap and the intake and exhaust modifications into account.
Video related to this case
Watch the video for additional details about this job.
