No Power From Dead Stop

[dsldude]

So, this is sorta weird. I have noticed that this 2004.5 has always had an issue from a dead stop if I have to roll over a small rock or something. I can come close to flooring it and I get a lot of black smoke and barely move over the rock. I can get over stuff in 4 low without an issue. I have a larger turbo which may be the cause for this. The transmission is newly built and seems good. I have no other power loss. Would an HP tuner help with spooling the larger turbo quicker down low?

 

[Ozymandias]

Na, you dont need the Turbo at all for rock crawling. It works like a naturally aspirated engine under this conditions.
And a normally 5.9CRD is real sensitive to throttle under this circumstance, just a slight push and it goes over the obstacle.

 

[promisedland]

Low stall torque converter? Really big tires? Just how BIG is this turbo?
How was it before the bigger turbo?

 

[dsldude]

It has always had this turbo since I bought the truck. s300sxe 63/80 super core turbine housing 80mm .91 A/R. Maybe the converter. Not sure what's in there aside from its a triple disc. Definitely worse with the camper on it, but does it unloaded too. Tires are not too big at 295/75/17

 

[p-Bar]

Do you have a boost gauge on the truck?

 

[dsldude]

Yes. It takes a bit to get boost in this situation. I think that's why a good time would help.

 

[p-Bar]

Find who sells that turbo setup and ask what the characteristics are of it so you have a baseline

 

[cerberusiam]

A 63\80 is pretty big to spool with stock fueling. You need to to remove some TM and do some custom tuning to help with that.

 

[dsldude]

Thanks. I sort of figured that was the case. It looks like HP tuner is in my forecast for xmas maybe.