In this revived thread, I've been on the fence over a G2 setup. There was another old thread that reported gains with the bumper on. The heat shields seem convincing, although the metal tubing could arguably counter that. I do have the pMAF tube and filter setup right now, and have been heavily convinced it is the smartest way to go. Pretty much only gain I expect from the G2's is....aesthetic.
Don't want to be an armchair engineer but I was always a bit skeptical of how air gets to the filters of the G3. It's literally crammed up front. Crash bar is covering the bottom, bumper covers the front and perhaps parts of the top. I'd be assuming air is only flowing from the backside off the radiator and the gains would only be because of the MAF sensor being tricked to run leaner. I am open to being wrong, though. I mean for sure there would be something more promising with more aggressive ducting.
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