Well I finally got my new turbo timer from APEX installed and it works Great... The only problem is when I first shut the key off the engine keeps running no problem but about 5 to 10 seconds later the engine light came on... the codes were wastegate solenoid malfunction and the other was cooling fan controll malfunction... my guess is that the ecu sees the truck is still running but its not recieving any data from the wastegate or the cooling fan controller.. When I turn the timer off and run the truck a day or so the light goes out. This tells me that there is nothing wrong with either of the two but it is simply that they are not powered on at the time the timer is in use. My question is If I found a way to keep these 2 things powered up while the timer is active, will it solve my problem or create more??