stacks04
McLovin
guys i have a dsp setup i made for my buddies truck, it is the same setup i have had in my truck with no problems at all. only differance is he tows a little heavier than me, maybe 2-3000 lbs more at times. the first time it happened when he was going to new hampshire towing his camper, it starts bucking, banging and smoking like crazy. if you let off the throttle and get back on it smoothly it clears right up and is fine. so it has happened a few more times and he got it to where he can do it on command.
it happens only under a big load, ie: large long grade and not burying the throttle, if you prevent it from boggin down it wont do it. what happens is you get the typical little smoke from low boost and then it just freeks, feels like you drop a cylinder. after logging it i see this (it wont load). but the pressure drops to like 60 mpa, and pulse shoots through the roof like 4000 ms+ due to the lack of pressure and high mm3 rate. not quite sure why it is losing pressure that bad. i expect to see some loss but not 100mpa loss. especially when the pressure loss does not start after a full throttle, it happens once it shifts into 5th and converter locks. the pressure kinda spikes during the shift, then falls to 60-65 mpa actual. when desired is 140-and up. it just wont come back to you unless you let off the throttle and ease it back up.
it happens only under a big load, ie: large long grade and not burying the throttle, if you prevent it from boggin down it wont do it. what happens is you get the typical little smoke from low boost and then it just freeks, feels like you drop a cylinder. after logging it i see this (it wont load). but the pressure drops to like 60 mpa, and pulse shoots through the roof like 4000 ms+ due to the lack of pressure and high mm3 rate. not quite sure why it is losing pressure that bad. i expect to see some loss but not 100mpa loss. especially when the pressure loss does not start after a full throttle, it happens once it shifts into 5th and converter locks. the pressure kinda spikes during the shift, then falls to 60-65 mpa actual. when desired is 140-and up. it just wont come back to you unless you let off the throttle and ease it back up.
