Truck feels fast for a little while then...................

[LB72004]

with your scan tool, connect to your ECM. press Shift & F2 to check for supported PIDs. if it is supported on your rig then they will show up in the PID tab (F8) without the x on them.

[JustinD]

Thanks!

[JustinD]

Had the engine harness swapped and it isn't limiting main injection timing or main injection fuel flow anymore, at least not up top? It runs alot better but I am still thinking something isn't right??? Anyone care to look over these logs and see if anything looks screwy??



Thanks!

[JustinD]

Only thing I see now is B0805 is referencing 6.1-11.9 cells, and when I use an older log where my baro is 14.6 it references the 14.2 cell which is 1.


This my B0805 with my sensor reading all over the place.



And this an old log when my baro was staying at 14.6




Can I just make these values all 1?

[JustinD]

It didn't help....

[LB72004]

looks like it should be running good from the logs. are you blowing a lot of smoke or is it more of a haze?

rail pressure seems to be holding. good boost, maybe a little outside its map, but still high for a stock turbo. PW seems about right, 3000~31xx, for about 500 hp.

the only thing that looked funny to me was the PW & mm3 dropping back down when you hit 80 mph. and going from 9 mph to 58 mph took about 5 seconds. mine can do that with less PW.

check [B0747 max fuel quantity vs speed], TLIQ & base torque for starters. oh, one other thing that doesn't look right, why is your baro going from 3.6 to 12.8/ should stay fairly consistent with altitude. how is it plumbed in? should be reading outside air pressure, not connected to any of the intakes, etc.

[JustinD]

Not stock turbo it has an II Silver Bullet S366, it has no drivability and it rattles a lot, it was suggested that I shim my FPRV, I made 494/956 without it and went 12.65 @ 105 with my stock turbo, but about 3 months after it started to feel slow, I thought maybe the CP3 was weak so when we installed the new charger I got a reman CP3 with an LBZ fpr and it was snappy for about 1 day then it started rattling, and feeling slow and has been doing it ever since, seems that if something is disconnected or Everytime I reflash it it feels fast for a short while until I start to hear it start to get rattley...


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[LB72004]

you saying the engine is rattling or the turbo?

[JustinD]

Sounds like the engine to me? Sounds more like a power stroke than a Duramax?


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[JustinD]

Baro is open to the atmosphere it's on the drivers side used to be on a bracket but it broke so I zip tied to the harness


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