Is there a way to adjust accelerator petal sensitivity?

Probably need to go to a dealer and have it adjusted.

 

If it's a fly by wire pedal there should be a throttle sensor that translates how much hammer you want into electronic language going to the ECM. That ECM then decides what to do with the engine. If the hammer is not sending the right amount for whatever you are trying to do to it then that ECM and engine will behavior that is not what you want.

A Dealer will be able to evaluate the information coming from that pedal and see where the problem is.

 

Let me guess., your used to a cat.

Detroit's are touchy I agree. It's something you have to get used too.

It could be tweaked a little in the ecm. I think the droop has to be adjusted. But over all they are touchy engines and I like the cat I had before for drivabillity over my Detroit.

 

It's mostly in the mechanic rate of turn the sensor moves during pedal travel. You can't change the linear voltage scale the ECM reads to convert to a pedal percentage. Throttle pedal sensors also have a fix range of motion and that linear voltage scale is linked to that range of motion. You would need a pedal assembly with more travel so that it would take a longer pedal stroke to actuate the throttle sensor in proportion.
Droop is mainly used for how closely the engine stays to cruise set speeds when going up or down grades.

 

Yeah I ordered my second glider with a factory reman N14 but got a call from western star that they couldn't do the Cummins because of hight issues.

So I went the Detroit route. It's ok, it has been trouble free and pulls great but took some getting used to the pedal.
Just a real hyper engine. Lol.

 

Going from a B model to a 6NZ I experienced the same thing; I guess I would be horrible in a Detroit.