i have heard of several guys putting thier mat sensor in the air box for a cooler reading. is there any performance gain to this? is it worth it to go ahead and do it? what does this do for the car? thanks

 

It only fools the computer into thinking the air coming in is more dense, so it will enrich the fuel mixture a bit. Could make some more power I guess.

 

A relocate MAT/IAT does NOTHING on a MAF car. The MAF measures the air flow for ALL fuel calculations. Any changes in air temp is detected by the MAF, NOT the IAT/MAT.

The IAT/MAT on a MAF car is solely for enabling/disabling the EGR, so all you will do is affect the operation of the EGR. Save your money.

 

what about a MAP car?

 

"what about a MAP car?"

I have had this discussion with the local guys here in our TPI club. My thought is the factory tables in the ECM are set up for the location to be in the plenum. If you relocate it to a location in front of the throttle body then IMHO you would have to go back in a change the tables. I would like to hear other opinions on the subject.

 

I have an 86 IROC. Im gonna install a Edelbrock Hi-Flow intake but there is one problem. I have an earlier version of a High flow which does not have the provision for the PCV valve on the driverside of the intake manifold. There is no way to find a vacuum source without affecting the Brake Booster or EVAP Cannister. So I was told to move the IAT to the front air box ("Y" intake) and install a elbow in place of the IAT location on the Plenum. Then connect a hose to the elbow with the hose leading to the driverside PVC Valve. That is my issue. So with that said, will I need to make any changes in the EPROMs Bin file? How will it affect my EGR Valve?
Thanks.

 

In theory if it did indeed add more fuel, it would made more power (best af ratio is 12:1), but 14.7 is the "best" for reduction in NOx emissions, and that's why we run that normally.

 

Opinions vary
https://www.thirdgen.org/forums/tech...mp-sensor.html

 

You already worked out best way last year.
https://www.thirdgen.org/forums/post...35-post17.html

No different than what the factory did on early cars .Purge and PCV on same line

 

I know nothing about the MAT sensor, I honestly only came into this thread because I never head of one, and thought someone mis-spelled MAF. Lol.
That's why I said "in theory if it did", not implying it did, not implying it didn't.

 

So I was right on the ball last year. You did it again vetteoz. Thank you. I just never got a concrete answer on my idea of tapping the EVAP Canister until now.

 

You can relocate it to the air box like I did on all my cars, just make sure its in the flow of the air..
Will it make more power? Not really anything even a dyno will pickup.

 

thats right,i have the mod. i did feel a small increase in power,car ran a little smoother when its hot out. mileage goes down significantly tho unless u make the change in the mat tables.

 

So what about using the V6 sensor in the V8 location (in the plenum) ? Would that not give a more IAT reading, for a speed-density car?

 

If you want to do this use a 6 cylinder air box "Y" it has a threaded bung on the driver side