I was driving to service call and the lower turbo hose popped off the intercooler. Felt a shudder driving down the expressway and power seemed to drop off. Pulled over and spotted the issue fairly easily (I could hear some "different" noise). 20 minutes later I was back on the road with a freshly tightened hose clamp. I got to the job and the customer asked me how I liked my Sprinter. Apparently his had lost a lot of power and his mechanic told him it must be something electrical. I agreed to take a look. There was electrical tape on the end of his lower turbo hose. Maybe that's what the mechanic meant?