Any ideas why??

I have 2 passports both 98's. One is an EX theother an LX. My LX is sooo slugish compared to the EX. I replaced the plugs, fuel filter, did the seafoam treatments, cleaned EGR... Can't figure out why there is such a big difference between the two. I use the same octane in both(89) any ideas or suggestions? Thanks in advance!

Sorry for my ignorance, but do both models run the same size tires? Same transmission and are both 4-wheel drive?

I'm so confused when it comes to options sometimes on these rigs, because I, in the past had a 91 XS Rodeo - it was an automatic 4x4 with air conditioning, upgraded tires/wheels, luggage rack, cruise control, but no other options. No power windows, locks, etc.

Then my 97 Rodeo is listed as an S/LS model - what ever that's supposed to mean! It is the standard 3.2L V6, automatic loaded with everything except, it's not a 4x4.

So I'm confused at the options available - not only that, they didn't have the EX or LX model names when I bought mine.