im tuning a customers lb7 that he sled pulls and once it reaches a certain point the engine shuts down or the ecm limits it to 1900 rpm. hes using a different ecm with the same service number and i loaded a 6006 dsp5 os on it. i ran over every table looking for something to cause this and the only thing i thought would do it is the expected maf flow table. but the Expected maf flow enable parameter (B0801) was set to 302 degrees. so excessive maf reading couldnt be causing this could it?