I bet that a manometer might be interesting but I bet the dial would be bouncing all over. I don't say that from experience so if you do run a test, please post it.
Perhaps a wider lip might be better but it might spread the interference out to the edges of our rather square vehicles. It might be that a narrower bump might help as well.
My car is so old that I have to rely on fills for economy data so changes come slow.
Years ago (2004) I tested a 1.5" wide fin on the front of my 17" wide recumbent low racer bicycle on a large hill. I started at a paint mark on a hill and measured the top speed coasting with my feet in the same position. After 4 back to back runs I was consistently about a mph faster on that hill with the rather ugly blue board and duct tape shark fin.
In my mind a splitter is similar to a turbulator
Quote:
Originally Posted by ECONORAM
I am wondering how I could do this on my truck in a tasteful manner. I tend to think going all the way across the hood would be better also. This looks like a good start.
Would it be worth sticking a manometer at the windshield base to do some before and after pressure checks?
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