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Modified JK TechTech related bulletin board forum regarding subjects such as suspension, tires & wheels, steering, bumpers, skid plates, drive train, cages, on-board air and other useful modifications that will help improve the performance and protection of your Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) on the trail.
PLEASE DO NOT START SHOW & TELL TYPE THREADS IN THIS FORUM
Regear, supercharger or engine swap are the only real ways you're going to feel a real noticeable increase in power. If you want an exhaust for sound, do it. But don't expect to shave time off the quarter mile
Unless you are willing to risk voiding your warranty, you should probably leave the engine and exhaust stock.
There are dealers out there that will threaten to void the warranty if you take the doors off…other will warranty jeeps on 40's and a long arm. Don't be skeered, find a new dealer if you have problems