Umm Mike slow down..
Edited............
the OEM's do offer things like lifts, Cold Air intakes, Turbos, super chargers and other cool things
some even do offer Lift kits.. and Jeep offers a better Sound system.
The acc catalog for our Jeep has things like CAI, Different wheels and upgrade speaker to boot. At one point they even had locker and other cool items on some models....
But the E3 spark plugs is not one of them..
i am sorry to say that most folk never see any of there claims over the long run of 30k miles.
Also a few employess of E3 even said they have a 75% failure rate open installation, the plugs where not strong enough to be torqued down right.
Then if they did pass that, they had issue if the got to hot they would melt.
Sorry, but adding this and the cost per plug, you can do better.
if you really want a better spark plug, start with better coils.
We have a good start. I am happy with what we have.
But if we had a larger, hotter spark maybe we would see more power or better use ofthe fuel used now.
in a mazda miata, you can add ina Toyota COP system and get a nice boost on the spark, they also resulted in better power, better burn, and everything at a cost of around $200 invested on used parts.
I am not sure what the Coil output is on the liberty....
But i do know that not all plugs are wroth $8 a piece...