[mca]

Originally Posted by john walker's workshop

reattach your heater hoses so they blow cooler air through the exchangers. otherwise, you have a pair of ovens under the engine. every little bit helps

This made a huge difference on mine. Had outlets capped after my rebuild b/c I didn't have the proper fan outlets.

I also found that a couple of my injectors were dripping and not spraying. Made a couple cylinders lean.