Quick update on my jeep. I replaced the OPDA last week with the crown unit... I had one short incident of the "Laughing Monkeys" and luckily had the OPDA on hand to replace. Also last night went ahead and removed the Macs Cold Air Intake and replaced it with the stock unit. I have had good results with MPG (avg. 15.2, better by 1mpg) and seat of the pants power improvement. However, I am not sure it is worth the in cab noise (OK when by myself, but when with family it is irritating in the already loud soft top jeep) and by far the most important reason is that when in a heavy downpour, such as we get in the southeast in the summer, I get some bogging from water finding it's way into the intake. I have experimented as much as I can with the screening in the cowl drain and still wind up with this situation every few months. When this happened on our recent trip back from the NC mountains, it was enough for me to pull over under a gas station shelter and wait it out... not something I like to do or am very good at. In the end, I drive the jeep to be able to go where I want, when I want and here I am stopped by a heavy downpour.... bye bye MCAI.
I have a replacement cowl on order so I can take the exterior back to stock as well.