I want to install a MAP sensor. Can someone post pics or good description of where/how you mounted it, where you tapped into the pressure lines, etc.?

 

I think I posted something in another thread..

The location I mounted mine was on the firewall near the strut tower center bracket and I ran it to the line that runs to the DV (Blowoff Valve) simply because I would rather tap a vacuum source of that, then the Fuel pressure regulator.

I *MIGHT* have a few photos as I did the install, but in reality the hardest part was getting the wires through the dash to the UTEC, and wired to the right pins on the connector. (I bought my 3Bar Map sensor through GMPartsDirect along with its wiring pigtail, and got the square 4 pin connector off an old power supply, but its a Molex 4 pin that you can get at Radio shack or mouser.com)

I'll see what I can find.. Its actually pretty easy, and I do know myself and one or two others have posted information and part numbers for this in the past.

 

Thanks Jack, I would really appreciate it if you could post some pics. I did see your part number info before, but I didn't see any details of the installation. I don't really know what I'm doing, so it would be super-helpful to see a pic of where you tapped into the line so that I don't end up doing something stupid. And how did you actually mount it, did you drill into the firewall or what?

Looking at the technical drawings of the sensor, it looks like the nipple is around 1/4" diameter. Isn't that bigger than the boost line you tap into? How did you deal with that part, did you just find a T fitting with the correct nipple sizes? The T-fitting and line that come with the ABC won't work, will they (I'm not planning on installing the ABC because my boost is too high already)?

Another question I have is about the wiring harness. Would it be difficult to do without this, and solder some wires directly to the sensor? From the drawings I can't tell if there are exposed contacts on the sensor that aren't too hard to get to.

 

I picked up the T connectors at Pep boys, your right, the hose size was a little different, so you have to get an assortment of connectors in different sizes to find one that fit.. There are no exposed connectors on the MAP sensor, and its a good idea to pick up the pigtail (it cost $12) to wire it up..

I tapped into the line that runs across the valvecover that goes to the DV (BOV) there's a short section of rubber line on the upper right corner of the valvecover.. I tapped both my MAP sensor, and Boost gauge into that line since those are "Closed ends" that is, the sensors don't bleed off pressure, so it won't effect the function of the DV or other accessories hooked up to it..

I'll try to post a pic or two.. But to tell you the truth, I used outdoor double sided tape to mount the MAP sensor to the firewall, (make sure its clean and wipe both sides of the places you plan on putting the tape with alcohol to clean off dirt and wax) I believe in making reversable modifications, so I avoid drilling holes at all costs.

 

y shouldnt u tap the source for the fuel pressure regulator like with a boost guage.??

will it affect anything?

 

????

 

sorry, missed your last post.. since the FPR's flow rate is governed by engine load (vacuum/boost) If what you tapped into it either leaks, or comes off, you could potentially have a problem (possible lean condition though I don't know if the rate lowers under vacuum, or raises under boost, I think its rising rate)

Its safer to use the DV line simply because if the line leaked or came off, the DV may malfunction but it likely wouldn't harm the engine (it would just blowoff earlier without the boost pressure helping keep the DV closed)

 

Thanks a lot Jack, that's what I was looking for. And I agree about the non-destructive mounting. I'm going to give this a try.

 

I know that I am thread digging, but I wanted to post a nice place to mount the MAP.

Use a longer bolt (i had extra from my DSM days) and remove the smaller bolt from this bracket. Then mount the MAP in it's place. All is there and it's compltely reversible. I am afraid that double sided tape won't be able to handle the heat. My TT has already fallen down from that in the summer.

 

Yeah mine is actually in the almost exact same place, except I used the double sided tape.. I've gotten through the summer without it falling off, but I don't blame you for doing that, I would have done the same if I had spent a little more time on it.

 

Your summers aren't nearly as bad though. I guess inside the engien compartment it wouldn't matter though.

 

LOL Ok you have a point there.. but on a hot day under the hood, I suppose its either gonna survive, or not.. regardless..

 

where do you buy a MAP sensor?

 

I got the sensor from GMParts Direct.. The part number is in the UTEC manual but its a 3Bar Map sensor used on the Turbo Trans Am and Syclone/Typhoon.

 

This is a copy of my online invoice from WWW.GMPARTSDIRECT.COM


12223861 SENSOR AS $53.96

12085502 CONNECTOR $15.36

Shipped Airborne Express

Taxes:

$0.00

Handling and Shipping:

$18.74

ORDER TOTAL:

$88.06