There are no issues with the BME that aren't present with DA, 3W, ZDZ or any of the others..... As mentioned, it is all in the installation. If the engine is totally in the cowl, you need to make sure that you install ductwork to insure that the air flows over the cylinder head and out the bottom of the cowl. The more airflow the better. If the head is sticking outside of the cowl, you should be fine as long as there is nothing in front of or behind it to prevent air from flowing freely.