me and a buddy got the bright idea to completely unplug the stock wiring at the map sensor and only leave the box plugged in........we were told the truck would either go into "limp" mode, or run like a scalded ape. well we tryed it and limped down the road about a 1/4 mile before i turned around limped back to hook the thing back up normally.
ever since then truck seems to run stock, have a "on" light and boost light, but no fuel light. I checked all connections twice now and even replaced scotch lock at pump, no luck. is the the box ruined? is there a reset on it?
thanks a lot for any comments
maybe i shouldnt have been so dumb in the first place

 

Check the fuse.

 

As stated above check the fuse, also where is it grounded? mine had issues until I grounded it in the loom going to the VP.

 

Yup! 5v fuse just downstream from box ..... and don't just eyeball it. Mine looked ok but had hard to see break in it! They tend to snap anytime box is re-hooked up!

RJ

 

bingo, same thing here. as well as it took me 3 days of pulling my hair out to fingure out how to turn OFF the EGT backdown feature. once i did that, truck ran like a scalded ape!

 

i thought about a fuse but didnt remember where the thing was located.....its been 2 years since i installed it. I bet thats the prob, will check when i get home
thanks a lot guys