start over. Good instructions online though. (at least there were) If you set onset too high it can make the boost too abrupt ( Both on and off. Especially off) I leave my onset just barely engaged. Another thing on a chipped car is that if you switch to stock programming and don't readjust, the Boost Machine will cause overboost and you'll drop into limp mode. I have to remember this if I disconnect the battery because my APR chipped ECU reverts to stock. I forgot that just the other day when I changed my thermostat. Good luck finding one though.
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