cutting out in boost
cutting out in boost iv been chasing my tail on this one. cant for the life of me figure out whats going on.
its a 08 5.3 with headers 222/222 cam and d1sc procharger with 3.55 pulley, has bosch 650cc injectors and walbro 450 every time I get up to around 9 psi the truck starts cutting out and the wide band goes crazy when it starts cutting out but from what I can tell in the log its pretty close before it stats its shenanigans.
I was thing maybe the gas was running to the back of the tank where the pump couldn't pick it up so I filled it up and same story, tried a power brake, no luck.
I think I'm running ngk br8 plugs, cant really recall. one thing I didn't do is gap them, just remembered I didn't do that. could I be blowing the spark out at 9 lbs?
here is a tune and log
its a 08 5.3 with headers 222/222 cam and d1sc procharger with 3.55 pulley, has bosch 650cc injectors and walbro 450 every time I get up to around 9 psi the truck starts cutting out and the wide band goes crazy when it starts cutting out but from what I can tell in the log its pretty close before it stats its shenanigans.
I was thing maybe the gas was running to the back of the tank where the pump couldn't pick it up so I filled it up and same story, tried a power brake, no luck.
I think I'm running ngk br8 plugs, cant really recall. one thing I didn't do is gap them, just remembered I didn't do that. could I be blowing the spark out at 9 lbs?
here is a tune and log
What's your plug gap at? With MSD streefire or stock plug wires, I had to run my plug gap all the way down to .018". After switching to a set of Firecore50 wires, I run around .025" gap and have no problems.
Also, I had a breaking up issue once that wasn't spark related. Turned out the fuel filters were clogged up with e85 goo. Drove fine out of boost, and didn't go lean in boost, just started cutting out. Cleaned the filters and had the injectors sonic cleaned and fixed it.
Also, I had a breaking up issue once that wasn't spark related. Turned out the fuel filters were clogged up with e85 goo. Drove fine out of boost, and didn't go lean in boost, just started cutting out. Cleaned the filters and had the injectors sonic cleaned and fixed it.
