Quote:
Originally Posted by patrickt
OK, all kidding aside, that little Xtreme air cleaner did make a noticeable improvement (not unbelievably dramatic, but noticeable) with low speed driving. I can't really tell you if it resulted in any HP gains under WOT. But I will tell you that I had to recalibrate the secondaries because the lessening of the air restriction resulted in lower venturi vacuum, so the secondaries wouldn't open at all until I did that. Of course, there's a lengthy thread on here about that. It's a simple bolt on cleaner -- if you want to show the other chrome jobby, it only takes a second to switch them.
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All kidding aside too, but call me a cynic. We don't know 100% for sure why your secondaries had to be recalibrated. Maybe it's climate change, different fuel, or maybe they were on the cusp of needing a recalibration for other reasons that you weren't aware of at the time of the recalibration. Honestly, run your Cobra on a local track at the same day/time, with both setups and report back.
And let's assume there is a difference, how much of a difference and should you really care if your makes 495 or 500 HP? Personally, I don't think it will noticable, unless dropping ET's for bracket racing is your goal.
Whatever floats one's boat. It doesn't float mine and I just want to drive it when I get the chance. I don't want to be changing air cleaner lids, when I show it, along with all the other changes necessary to make my car operate 0.001 better, but hate to look at when they're installed.
