i have a 2003 ford sd 7.3L autotrans with DIY intake, 4" exaust, pre-pump filter, gauges, banks exaust brake, and your e-con programmer. i've had your programmer installed for about 3wks. everything has been fine, good power, i'am happy with it. yesterday i was driving it and when i went to speed up on the highway i could not build boost, i put it to the floor and started missing and shifting strange. the cel came on so i took it home and used the e-con to pull the codes. it gave me 1211 & 1249. i checked the wastegate to make sure it was working right and all the connections, everything was good. drove it again and same problems. just the 1249 code. returned it back to stock, drove it again and everything was good, no problems. i never had these codes or problems before installing the e-con. the weather has been -20 below for the past couple days but the truck has been pluged in, i don't know if the temps has anything to do with it. i did alot of research before buying the e-con, i just wanted more power for pulling my 10,000lb 5th wheel. i don't want a tire smoking sled puller. i've been real happy with it until yesterday.
what's your take on this? thanks