This isn't a question about my truck, it's someone else's.
Take two almost identical trucks running stock HPOP's, and slap the exact same tunes on them.
One truck will maintain ICP at 3000 psi at WOT regardless, no matter what.
The other truck will hit 3000 psi if you gently roll into the throttle, but will peak at a max of 2200 psi in any tune if you stab the throttle suddenly (from a cruising speed or from a dead stop, doesn't matter). Even tunes that strictly limit fuel injection pulsewidth still sees 2200 psi of ICP when stabbing the pedal.
Of course when this happens the truck smokes, falls on it's face, keeps smoking and smoking and smoking, etc.
Any ideas? Is this an IPR problem, or some kind of pump issue (HPOP or LPOP)?
Take two almost identical trucks running stock HPOP's, and slap the exact same tunes on them.
One truck will maintain ICP at 3000 psi at WOT regardless, no matter what.
The other truck will hit 3000 psi if you gently roll into the throttle, but will peak at a max of 2200 psi in any tune if you stab the throttle suddenly (from a cruising speed or from a dead stop, doesn't matter). Even tunes that strictly limit fuel injection pulsewidth still sees 2200 psi of ICP when stabbing the pedal.
Of course when this happens the truck smokes, falls on it's face, keeps smoking and smoking and smoking, etc.
Any ideas? Is this an IPR problem, or some kind of pump issue (HPOP or LPOP)?