Hey guys, I've got my new 3 BAR MAP sensor, the one from MSD ignition out of summit racing. Anyways, it requires a different connector than the factory one has and it's freaking big so where do I mount the 3 bar map and how do I hook up the wiring to it? Any questions would be badass, since it's the last thing I need for my incon setup before I crank it!!!!

 

Just take a razor blade or exacto knife and cut new slots in existing connector to match 3 bar map plug slots. Sensor A is sensor ground, B is vacuum/boost signal and C is +5V Ref.

 

Oops, that razor blade/exacto thing wont work, I was thinking L98 engines. Go to a parts store and get a MAP sensor plug for a '91' F or Y body 5.7L for a 1 bar if a 3 bar is not available. Then you can do the cutting thing. A MAP sensor should be mounted level or higher then the plenum to prevent moisture drainage into it, as short of a vacuum/boost line as possible and do not "T" anything into that line for the best signal.

 

How do I mount the thing on the back of the intake though, since it's so big and it doesn't come with an orange little boot on it like the factory one. Do I hook it to a vaccum line and then connect it to the intake? Thanks for the input,and anything you guys can tell me would be badass!!!!

 

bringing this thread back up. I see the C, B, A on my new 3 bar map.
but how do i tell which one is which on the stock map sensor or stock connector other then taking a multimeter and figureing it out that way, any one know the wirer colors?

 

I'd love to know the definite answer as well

 

they both say abc, just hook a to a, b to b, and c to c.

 

this might seem like a stupid question, but if your running in SD without a MAF, what would the car run like if the 3 BAR MAP was hooked up wrong? I'm guessing like ****, but would it run real rich, or would it run at all?

 

I'm getting ready to install a 3 bar map as well in a few weeks. I came accross this link http://hhscott.com/93tmv/3-bar_map.htm that has the breakout for the 3 bar map sensor wiring at the bottom of the page. As for the stock MAP sensor wiring, I'm curious about that as well.

 

im looking at my stock sensor right now and there isnt an a, b or c

 

It isnt in the label?

 

mine didn't have it either.

 

nope not in the label, unless 2000+ had them on the sensor or something wierd like that.

 

I got a copy of the GM service manual for an 01 F-body and the wiring diagram identifies the stock map wiring as follows:

A Tan Low Reference (ground)
B Lt Grn MAP Sensor Signal
C Gry 5v reference

Edited to include pic of connector.