i had a regular n/a setup boltons and cam...i added a walbro 255 pump and after install when getting to 3500 -4000 rpm it did like it was redlining but it advanced to higher rpm...now i changed the cam and added 65lb injectors and a procharger setup and now it does it more...now it stays there and wont advance ..( at wot only) we think its a fuel pressure problem or anyone got an idea what it could be? and when that happens a/f shows 18 and 19

 

is this on your new truck (07) with the regulator in the tank.the regulator may not be able to carry enough fuel volume even with the larger pump

and they could have some knid of safety thing in their i'll check on this for you

 

yeah in the 07. i heard that they have it in the fuel tank..but can it be adjusted going to change the pump today to see if its that ...