SPECIFY FULL ENGINE DETAILS IN “NOTES” SECTION DURING TUNE CONFIGURATION!
A popular request by people with one of MetricMechanic’s 1.9, 2.0, or 2.1 L M42 engines. This tune is intended specifically for the Metric Mechanic (MetricMechanic; MM) upgraded M42B18 engines. If you are not running a MetricMechanic engine, please use the following tune: M42B18 TUNE
This chip is compatible with:
- M42B18 base engine with full 1.9, 2.0, or 2.1 L MetricMechanic build.
- Known as MM1900, MM2000, MM2100, MM42B20, MM42B21, etc.