COSWORTH YBT 2.0 liter. Until 07/94

COSWORTH YBP 2.0 liter, from 07/94 to 01/96 Engine modifications from the previous YBT engine:

Both engines have the same power and torque. The YBP produces power and torque at lower rpm than the YBT. Our understanding is that the YBT configuration, especially the larger turbo, was for the purpose of World Rally homologation. The YBT is much simpler to increase power output to high levels, e.g. 300+ hp. The later version, YBP engine, is restricted by the smaller turbo and eec-iv engine management system and consequently more difficult to effectively increase the power.