I viewed this topic an hour ago, and have been churning the thoughts in my mind since. So I MUST!:
This sensor is a MAT Manifold Air Temp sensor....From the description it sounds the same as an IAT Intake air temp sensor. As far as functionality anyway.
The MAT is called this because it mounts in the manifold, whereas the IAT mounts in the rubber intake pipe on an N/A 3.1.
So this leads me to ask the question, Why did GM/ASC choose to locate the air temp sensor in the intake pipe on the N/A 3.1, and in the manifold on the turbo 3.1. Why didn't they just mount an IAT on the upper intake pipe running from the intercooler to the throttle body, this would put it in the same spot as on a N/A 3.1, just in the metal pipe, rather than rubber pipe?
I'd just like to get the insight on some of you more knowledgable in the ways of the turbo 3.1.
Here's some reasons I thought of for why they changed the location:
- The pressure of boost would cause innacuracy in the sensor if mounted in the pipe.
- The metal intake pipe would be too thin/difficult to tap into for mounting a threaded sensor. Keep in mind that the N/A 3.1 IAT just presses into the rubber intake hose, boost would shoot that sucker right out. It would HAVE to be threaded in. The intake manifold has more material to thread a sensor into.
- Perhaps GM outsourced the manufacturing of the intake pipe to some other company. Whereas the intakes (at least N/A ones) were produced by GM in house. If they had the intakes in stock and outsourced the production of the pipe. They would choose to mount the sensor in the intakes that they were producing in house, as to lessen costs of waiting for parts, and speed up assembly production.

What do you guys think? As I was writing, the second suggestion stuck out the most for me. This just being from my own knowledge, and sense.

BTW: I haven't been to this forum in over 3 months. It's nice to see that some of the wiser members of the W-body forum are posting here. I will definitely have to frequent more often, as I see this forum is getting a lot more action from many knowledgable people whom I recognize. I stopped coming here because there were rarely any new posts.

Jeff M, You have a Typhoon too?????droooool......
Someday I'll have a big ol' garage full of boosted GMs, just don't tell my old lady :wink:

The STE has the usual stuff, TG160, and a K&N that I just put on  (love it already) I think that is it. I've done several other things in the name of maintenance, but theres not a whole lot more I can do performance wise, besides exhaust and an upper intake swap. I've only had the car since Thanksgiving, so, in due time.....
The Beretta's time is also a G-tech. I was looking for some ballpark figures until I can get to a track this summer.
I did my Geo Metro too, 19.1 @ 74 MPH, pretty impressive....look out TGP :)

Quote from: mfewtrailBossman, was that 14.5@101 a gtech time?  I believe I asked you on the W-body forum right before it went down. :oops:

I don't remember you asking that, but yeah, it's a g-tech time. So it's not COMPLETELY legit, but it was enough to prove to my dad that my 4 door sedan was faster than his 95 mustang, and as fast as his 94 lincoln mark 8.
14.52 was my best out of 3 runs before I put the k&N on the turbo, since then it's been too crappy weather wise to go for another run.
My dad was gone for several hours in his lincoln trying to beat my time. He finally came back and said he ran a 14.51 :roll:  I'm still perfecting my launch also, whenever the good weather hits I'll go to the track for a REAL timeslip, but til then, a g-tech time is good enough to brag on my dad about.

Quote from: Jeff MCareful the lense for the door light as its pretty brittle and no longer available from the dealer, and J/Y ones can often be cracked as well!  If your top escutcheon for the seat belt breaks let me know, did get spares of those.  

Jeff M

too late :(  Actually both of my passenger side lenses are broken, and cracked when I bought the car. The drivers side lense was missing, but I bought one a few days ago from GM, probably the last NOS one left in the world. They told me they can still get the driver side, not the passenger side. Just have to keep an eye out. Took me 4 years to make the Beretta nice, I just need some time to work out those kinks in the TGP. Sure is a fun car though.

Quote from: Jeff MIf you get anal and count the tweeters separate from the mids/woofs we got 2 in each front doors (4) plus those tweeters in the rear doors (2) then 2 each in the rear deck (4), that makes 10 :P  

That's me! Mr. Anal :?  wait did that sound wrong?

Jeff, I'll PM you about some of that computer stuff when I get some time, but on the way to work now, and have to put the door panel back on the STE after work. (bent door handle rod caused the door to not open from the outside handle.)

That looks nice!
I saw an NA 3.1 plenum on Ebay a long time ago that was painted with Harley "Hammered black" spray paint on the outside, and another color on the inside, I thought it looked awesome. Some day, some time I will have either of mine painted. Right now the Beretta's is polished.

Quote from: Prospeederi think those euro square ones are cool looking!

They put those on Berettas in Europe too. I always thought they looked odd on a Beretta, but that euro GP looks alright. :)