hey gents, i have finally given my dsp setup to a freind of mine. it took me a while to be confident enough to put my tunes in somebody elses truck. it has been in for about 3 weeks now and has been fine. also has been in my truck since the begining stage of this year. no issues on the tow or milage tune. well this morning my phone rang at 6:30 he was towing to new hampshire for the race and in the tow tune he went to pass someone and he said the boost gauge went south right to 0psi and ton of black smoke. then pulled over checked things out to no avail. started it up took off and it ran fine. he then went to the milage tune and was good but it happened again. this time he just let off the throttle and back on it and all was fine. any thoughts. at first i thought he just blew open the egr valve because i know the tow tune has some boost, but the tow tune has minimal boost. sorry for the long post