Interesting feedback, Joe. I'm reasonably certain I gained about 0.5 mpg in highway driving with the Gotts mod. But, as you say, there are MANY factors that effect this, and one tank of gas isn't really a fair test. I came up with my 0.5 figure comparing two trips of about 1,000 miles, but even that has variables that could alter the results.
I DO know that those of us here that are "close" to PHP are firm believers in the Gotts mod. It is certainly possible that a correctly designed commercial intake could beat it performance wise, but the difference would be minimal and would hardly justify the additional expense. I agree though, the commercial CAIs look kind of "cool".
- Jack
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