BMW 418i GrandCoupe F36 1.5T (B38) – Stage 1 98 RON

How about getting some desperately needed extra power on your 418 Grandcoupe? Stock B38 3-cylinder engines are not bad. Tuned ones are much better, a whole lot better. This engine has great tuning potential even on completely stock hardware.

The Grandcoupe 418i came to us completely stock and made 136hp on dyno, which is exactly what the manufacturer claims. We developed an #etuners Stage1 ECU remap for 98RON fuel. Power increased to 188hp, bringing it much closer to its 2-liter sisters with 4 cylinders.

Upgrade specifications

  • ✅ 98RON fuel
  • ✅ Stock hardware
  • ✅ #etuners Stage1 ECU remap for Bosch MEVD17.2.X

Performance results

  • Maximum engine power: 188hp (measured stock 136hp), gains 52hp

  • Maximum engine torque: 292Nm (measured stock 244Nm), gains 48Nm

For more information on how to get in touch with us and to find our authorized dealers, please visit our website at

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