I have a 3.7L 2015 coupe with 7,000 miles and I'm looking to give it a little extra muscle. My initial mods are planned to be as follows: While in Warranty: Roush Cold Air Intake Bama Diablosport inTune i2 -- Anyone used these guys? I've heard very good things, but open to suggestions. I've been told you can flash the tune while getting service done and reset to factory. That way they don't know you've tuned it. Is this true? I don't see a performance reason to get an axel back exhaust. Unfortunately, a cat back exhaust voids the warranty (or so i've been told). Any arguments there? Any other suggestions for power gains that don't void the warranty? When out of Warranty (30,000 miles or 2 years): BBK Throttle body -- not sure if there is a benefit to the additional spiral spacer, but willing to consider it as well) Cat back Exhaust with H pipe (Open to suggestions here. BBK Long Tube Headers -- Willing to go short tube, but not sure the pros/cons Any other suggestions? I'm not looking to turbo the car, as I want to maintain as much reliability as possible. I'm open to any suggestions, problems, etc that anyone sees here. Again, I'm wanting to maintain my warranty as this is my daily driver and will be for at least the next 2 years. With that said, I would love to create a "Z-Killer" sleeper. You can have your cake and eat it too, right? Thanks for any help you're willing to provide!