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I dont know anything about the afe, but my AEM is loud and sounds mean. Performs pretty good too.
For the CIS issue, most of Borla's mufflers have had a lot of luck on our trucks. Pro XS (mellow growl) and the XR-1 (Angry Rumble) are great mufflers
For the CIS issue, most of Borla's mufflers have had a lot of luck on our trucks. Pro XS (mellow growl) and the XR-1 (Angry Rumble) are great mufflers