Originally Posted by bmx045
it probably had a custom map on before you switched to the AP. furthermore you neglected to read the clearly stated instructions for the AP maps- STOCK INTAKE REQUIRED. unmarry it and see if the misses go away. compression test never hurts. since it's all 4 cyl misfire its probably air or fuel related
i dont have a stock intake map on then AP, i understand the directions very clearly, when i switched it back to "stock" i was refering to non stage 1 91 and stage 2 91. so the "stock" AEM intake, fuel economy, map. i understand clearly that a stock intake, takes a different map.