ForFun

My V6/5VZ-FE does the job of climbing the mountain but strains tremendously from about 9,000 ft. up to 13,000 ft. Smaller engined trucks and SUVs w/altitude compensation just pass me by. Not good for the Toyota image. Have installed a ProChoice Perf. chip with little results. Super/turbo charging is my very last resort, for I want to keep my set up as simple as possible to improve my chances returning from the backcountry. Would appreciate your suggestions.