BigBlue

I've been driving around with my map sensor unplugged for a few months now. I decided to plug it back in because with the warmer weather I'm starting to notice just how dirty my injectors can be even with the comp on 1x2. So I plugged it in and went for a 200 mile round trip to see mom. First thing I noticed was lack of response. The truck was a dog. Next thing I noticed is that climbing hills with the cruise was a lot smoother and the EGT's stayed lower by almost 100*. I turned the comp on 5x5 and romped on it from a dead stop and it took a while before it finally lit. With the map unplugged it would just take off like a bat out of hades. A stomp on 1x2 was pathetic. It didn't light off until almost 2000 rpm's where as before it was almost instantly. I haven't tried on 1x5 yet but will tomorrow but so far from what I've noticed is that unplugging the map sure did wake up the bottom end on my beast a lot. I also noticed that my smoke was WAY down. Normal accelerating up a hill at 70 used to leave a pretty decent little trail but now there's none. Just thought I'd throw this out there for yall.

pmtg

i agree.

when i first unplugged mine i really wasnt impressed, but its when i plugged it back in that i noticed the lack of response. and w/o it plugged in i get a lot of surging when using cruise (50-65mph zone), i just turn the comp off and it tones down.

its very easy to smoke with it unplugged. i dont care for it since daily driving becomes a chore with all these stoplights!

kelownadiesel

do you leave the comp hooked up to the boost sensor and just unplug from the map on the engine?

kelownadiesel

wont it throw codes and defuel?

smokindog

Not with a fueling box turned on. The boxes fool the ECM into thinking that the truck is within it's "factory" operating parameters.

BigBlue

Yup. It allows for a smoke show at idle and better bottom end driving around town.

kelownadiesel

Excellent smithers excellent,I'm going to try it right now

01smoker

Will it throw any codes if I have the map sensor unplugged from the engine but still plugged into the comp harness and have the comp off? I have ran it unplugged before with the comp on but never off. Reason is is that I always let my truck warm up a lil bit before I turn the comp on.

trex

i unplugged mine just to see what happened. it runs like crap! super rough! smokes which is cool but not too sure if its worth the rough idle. in nuetral it idles at 1300. thought that was kinda high. wot kinda rough also. something wrong here or is that just what happens.

ds1rider

Can you install a switch to run with or without the MAP?

BigBlue

I haven't had any negative effects other than smoke. My truck idles, runs, and drives the same. Just with a big loss of bottom end. Oh well. Come thursday I won't have that problem. Come on 100 grand.

pmtg

shouldnt throw any codes. i turn my comp off from time to time and it has never thrown a code.

trex

would that be a sign that something else might be wrong?

SuperDave4x4

Wanna help a brother out and buy him a few tranny goodies.....

P.J

He's referring to the Candy Bar "100 Grand"! It's really only $600.00 and change.

Yes, I'm jealous.