I have a 08 V-Maxx truck that was brought to me to do the dod delete tune on after having the dod delete parts installed at another shop. Now the only way to get the truck to run is with your foot on the gas or to have the big pcv hose unplugged. It has the ls2 valley plate with the pcv valve in it but is plugged off and the factory pcv system is in use. Am I missing something here?

 

If it is setting the codes for the solonoids not being there (P3401, 3425, 3441, 3449) it will not fire the injectors for those cylinders while the codes are active. What cam is in it?

 

All of the codes are shut off. The cam is a comp cams with 222/234 dur and 566/576 lift on a 113 LSA. I was able to fix most of the idle issues by cutting the idle and coastdown steps by about 70% it still has a little bobble in it but it is driveable now. Now it almost seems like the MAP scaling is off I did a short 1st gear pull and as I rolled into it by the time i got to 54% TPS the MAP was showing 97 KPA and stayed right around there until I let off the throttle.

Now that I look at it more it seems like the MAP might be a big part of it its idling at about 75KPa. I have checked for vacc leaks with brake cleaner and found nothing but the MAP sensor might be bad? Or at least getting a bad reading somehow.