Quote:
Originally Posted by hansj3
I read through the post in your signature and I was just wondering how much improvements did the behind the grill block give you vs the in front grill block?
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What was most telling was how quickly the engine warmed up in the winter months. There was a significant jump when I moved it to the front, which indicates to me that I was getting a lot of air flow going past it when it was mounted behind.
I didn't do any A-B-A testing, but looking at average mpg before and after, it was somewhere around 0.5-1mpg by having it in front and little to no gain by having it behind.