I just bought a brand new 2004 Wrangler 2.4L cylinder w/ 5 speed manual transmission. I bought the smaller engine for economy (it is mainly a work car) but could use a little more power. A Jet Performance Chip is available for this engine but I am afraid of voiding my warranty. Can you install the chip only (no other mods) and still get more power? Would the dealer know if I had the chip installed? Thanks