The rod on the actuator extends with pressure, and should be fully retracted when the engine is shut off.

 

Have pulled my camper 8500 dry weight with everything as stock except the turbo. Found when I was running the edge comp I would have to back out of it on long hills due to the egts climbing too fast or I would just turn the comp off. With the comp off it would hold speed but not gain much.

While on flat ground I have no problem building up speed with the comp off. This is with 33" tires & 3.55 rears to boot, So somethin may be wrong. Like the others have said check the usuall suspects, I would start with the fuel filter.

On another note have towed up to 16k several times & I would have to keep the comp off EVEN on flat ground to keep the egt's under control. But I am **** about not letting it get close to 1200.

Looking forward to hooking to the camper & seeing how the adrenaline does.

 

Are you sure, I'm fairly certain it is spring loaded shut and it takes pressure Via intake to force the spring closed thus opening the wastegate, now if it was a 6.5 chev the wastegate would loose and you could open and close it by hand

I'll check mine to be sure

 

I agree, great towing combo.
I thought my truck was a pig when I got it also, I was disapointed in it's towing power. I like it now though, it just needed a few tweak to get there.

 

I think we're both saying the same thing. It's spring loaded shut, and opens (extends) as the boost pressure increases.

A Chev 6.5 uses vacuum to open and close the wastegate as demanded by the ECM through the wastegate solenoid. The Cummins way is far less complicated.