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If you set everything at 0, your car will run at stock a/f ratio. This will get you to the shop to tune just like it got you around for the other 95,346 miles you've driven.
tks guys......so, i shud not even follow the instructions thy have at mkiv.com regarding basic settings.
it tells me not to modify low throttle settings at all but it also indicated to modify high throttle fuel curve
but on the dyno and with air/fuel ratio meter and gauge.