oh yeah, you are letting repsdoc and dan get off topic. the chips will not void your warranty unless it can be proven that it was the cause for your cars problem. but unless you have a great moral dilemma you could just get it flashed before you took it in for service and chrysler would never know. there is also a pulley kit available from evosport, which no one on this site has purchased yet. but it supposedly adds 9-13 hp, and here may be some headers coming out soon. people have also been installing mercedes v8 air boxes and say they make a performance difference. although similar to everything else, there is no data from dyno to prove any sort of increases.