Actually, I run a FlashPaq tune and it does run better and the milage went up about 1MPG, so there's that. I also run a LiveWire Screamin' Demon coil pack and wires which boosted my mileage by about 2-3MPG, so there's that too. I also run a Dynomax exhaust, but that's for clearance, not performance, because I actually wheel my Jeep not try and look cool chasing ladies off base when I'm on leave.
I'm just relaying experiences that others have had and potential issues you may run into to save you some money and frustration.
Judging by this and some of your other posts here, I'm sure you're the kind of guy that doesn't give a shit what others with more experience tell you and just want to be told what you want to hear, so go ahead and put those bad boys on.
Next you'll throw $5k into the Ripp Supercharger and wonder why the bottom end of your 3.8 has extra holes in it a few months later.
While you're doing all this, don't forget the Grumper grill and 22s cuz those add at least 35HP. It must be true cuz I read it in the internet.
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Build Thread - Adventures of Fiona -
https://wayalife.com/showthread.php?t=47407