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Message: <blockquote data-quote="shovel" data-source="post: 1545801" data-attributes="member: 29855">I have a 94 GT with a manual and 3.08 gears and my wife has a 02 v6/auto with 3.55 gears and from 40-80mph hers pulls decisively harder than my GT did when stock.     At those speeds with the GT I'm either in too high a gear and the engine's not making power at the wheels or I'm in too low a gear and the engine's out of its power band while her V6 has its power band basically from 2000-5500.     That doesn't mean anything was wrong with the 5.0 it just doesn't have variable cam timing like a modern car or variable intake geometry like the split port V6 so it's got one skinny torque peak and falls off above that.  Anyway before you spend any money trying to work with the stock ECU if it's within your budget and local regulations start off with the best aftermarket engine controller you can afford.   Then when you inevitably perform physical modifications you can just directly address them in tuning without having to guess and pray.</blockquote>