Just like the title says, i installed the BD power APPS Noise Isolator and it installed fairly easy. I went and tryed it out and everything worked fine, but i got on it once and the cheak engine light popped up. I ran the superchip scan and a code came up and it said throttle pedal pos. Sens/SW D CIRC RANGE/PERF. I think the code number was P2121. It runs normal, but why would that code come up?

 

Found this: P2121 P2122 P2123 no throttle response - Dodge Cummins Diesel Forum

 

One question, why the noise isolator? Something for audio reasons? Just wondering.

 

The noise isolator is spose to be a special ground wire that BD Diesel makes for the dodge transmissions that help the tranny shift smoother. It does work pretty good too.