dodge has diagnosed the scr catalyst is bad along with ammonia sensor, cost to replace is 2k, think its time for the stuff to fall off and was wondering if anyone had actually done it. Ran the TS stryker module on this truck the last 1.5 years and i can vouch that it never was detected by dealer (20 different dealer visits, removed it each time), did notice a slight increase in mpg 1-1.5 depending, used less def under load also, alot better throttle response. Thumbs up to TS performance on that. But i dont like the idea of dropping 2k for an item that i know will go bad again in another year or so (i work this truck pretty hard, 218k on it).