Installed a JLT Cold Air Intake on my 2013 a few months ago and ever since then I have noticed that above about 5,800 RPMs it gets very raspy. I have Flowmaster Axle-Backs so it's much more noticeable. I was wondering if it could be caused by running too lean because of the intake. Just wondering if anyone has had similar problems? I plan on getting an SCT tuner, but I may be planning on it sooner than expected.