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i have 2 trucks with and 2 without the butterflys


Are your trucks are mechanically identical in all ways (identical wheels/tires, exhaust systems, age, mileage, equipment, etc) so you are comparing apples to apples?


95 Montero SR
3.8 MIVEC, Advance headers, 2 1/2" exhaust, Magnaflow muffler, OME shocks & rear springs, 2" body lift, 3" tank lift, 4.90s, TRE front locker, factory rear locker, Roger Brown Rock Sliderz, 315/75r16 (35") tires, Sport big brakes