Ok unplugged battery, codes gone. Codes back on, P0102. Car stumbles at idle goes below 500rpms and sometimes gets back up or dies. Mostly dies. Feels like no gas is getting to it but there is because when it stalls I pump the gas and I see it go out the pipes... yes I know its smoke. Looks like the maf. I also did the tb bump stop mod and volts are at 4.68 but if I mash really hard the volts go to 4.74. Will this throw a code.