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Adjustable MAP sensor

YJ:
4.5K views 7 replies 3 participants last post by  cobra96svt570  
#1 ·
I just installed an adjustable MAP sensor on my 1992 YJ. I've done a little work to the 4.0l to make it breathe easier, and being a speed density system, there is no way for the pcm to see the increased airflow like on a mass air system.
I increased the input voltage to the sensor
By .2 volts. I check mileage on every tank of fuel and I usually get 16 mpg. My first tank after modifying the map sensor got me 17.25 mpg. Pretty impressive considering my yj is on 35" tires, and carries a good amount of extra weight. It never got better than 16 when it was stock with 30" tires.


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#6 ·
Nice. For quick monitoring I have an old LM1. My full time is a LC1 with the Inovate gauge. I really like Inovate stuff. Had a few problems with some Inovate stuff I purchased on e-bay, sent it back and they fixed it for free.
 
#7 ·
I've used the Innovate stuff before and have liked their product. I used am AEM and it was nice too. The Ebay seller that I bought mine from says "in stock! Fast shipping!" And a week later I still don't have it. He says I should have it by this friday.

Waiting 2 weeks for an "in stock" item sucks.


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#8 ·
check my pic's. or the superchargedYJ thread were i posted them. cost about the same if you get the stuff from R.S
I have the parts list somewere, but you can just look at the pic and see what you need.
Also, here is a great site for stuff like this especially on jeeps.They have all kinds of p.c controled voltag modifiers,clamps,enrichers just for .5-12 volt signals. Also simple fuel/timing piggyback controlers that work great! I had the ftc1.
http://www.splitsec.com/
 

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