Best performance chip for 2005 jeep liberty 3.7 ltd ?

save your money, no matter what chip you get you will be disappointed in it. These chips do not do what they claim, and have been proven time and time again not to do what advertising claims. there is no 50 hp magic bullet, and there is no cold air filter that can add another 50 hp either. Its sad that manufacturers pull this suff and consumers end up wirh mosrly garbage. Ask your trusted mechanic what he thinks and see if he has any positive information. If would be nice if even one thing worked, often times the check engine light comes on, or the car will not start or something else happens. General Motors has refused to honor warranty cars with chips, other manufacturers also do not allow new cars to have cold air intakes or any power chip. So I would not take a chance.