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The interesting thing with the e-Ram is that most seem to use it with 3" intake piping, but 2.5" piping might be better to keep the air velocity or pressure up. I've looked at a few more dyno results now, and people are seeing 5-6% gains over a SRI or CAI. So it basically gives double the gains over stock airbox compared to SRI or CAI, at slightly more cost. I haven't seen any super e-Ram dynos yet.
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