Quote:
Originally Posted by oil pan 4
Sounds like you need lots of header wrap or maybe the catalyst just needs to go bye bye.
Too much belly pan has caused cooked wires, fried sensors, gas tank boiling for other people.
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Hehe. I was actually one of those "other people" on my first version. I naively covered everything up on my first go around and started cooking the interior cabin. I got super lucky that I did it in the Fall and found out about it in Winter. I think that if I had done it in Spring... it would have been adios Champrius.
This time around I left the original airflow mostly intact:
https://www.instagram.com/p/CfHZAqXFjB3/
So air has a continuous path from the engine bay to exit in front of the gas tank, just like the Toyota engineers intended. The only thing I changed was the flow to the wheels. They had channels that 10% of the air would use to deflect in front of each of the rear wheels. But that snakes around a lot of the underbody as well. So I decided to seal all the off and dump all the air in the center.
Something else I'm proud of is that I left the pipe exposed. When you look at the stock underside, the pipe is clearly below the belly pans (see attached pic.) In earlier designs I covered that up, and it slowly cooked the plastic. In v4.0, I've decided the engineers probably wanted it exposed to airflow to cool it or somesuch, so I've left it alone and continued the belly pan underneath it.