what would happen if i put a lil fan like a processor fan on the air sensor? .. that i took out of the air box when i removed it
hmm

 

I would say the air/fuel mixture would be off. Maybe causing the engine to run rich???? Anyone else?

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1992 Camaro RS 3.1L
T5 Manual 5 speed
Open Air Intake
Z-28 Exhaust

 

On the LS1 engines you can put a 4.7 ohm resistor between the terminals of the sensor.

This gives the ECM the info that the air charge is colder than it actually is.

This allows the ECM to give a little more fuel/timing curve.

I personally don't think this mod is worth anything noticeable as far as performance goes. Some people say it is, I did it and took it back out. To each his/her own.

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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

 

Do we have a LS1??? Hold on let me go check........Nope we sure dont! Damn.


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1992 Camaro RS 3.1L
T5 Manual 5 speed
Open Air Intake
Z-28 Exhaust

 

Heh i was thinking the same thing what about the 3.1? hmm would that work?.. ehh

 

OK Monkie....Ha ha...

What I was saying, maybe I should be a little clearer.....was that we used a 4.7 ohm resistor in the LS1, I don't know if the resistor amount is the same on a 3.1.

I wasn't thinking you had a LS1 (DOH!!)

I just didn't know if the resitor value was the same.

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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

[This message has been edited by Engineboy (edited October 25, 2000).]

 

wow this topic seems about as good, as the old Almighty Deckercharger!!! jk.

 

Engineboy sorry about that but I didn't really know what you were talking about. I mean I didn't know if I was right or wrong but I didn't think our cars were much at all like the LS1s. I WISH THOUGH!

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1992 Camaro RS 3.1L
T5 Manual 5 speed
Open Air Intake
Z-28 Exhaust

 

Thats cool

The 3.1s aren't like the LS1 but alot of performance upgrades apply to both engines (all engines) in the same ways.

85F bird....."Deckercharger" ???



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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

 

I dont know about yall but I find it to be a HUGE *** BITCH to find mods for my 3.1!!! Other than the basics I cant find any.

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1992 Camaro RS 3.1L
T5 Manual 5 speed
Open Air Intake
Z-28 Exhaust

 

The deckercharger if i remebr correctly was a leafblower turned into a supercharger still wana try it lol it would be frekin halerous. But i was at a page a while back sayin if your moved your IAT to a cooler spot you would gane throtle response. When i get around to it ill try it just dont know were i can put it...

 

you're right Fast RS, but hey, i thought it'd be funny as hell to do, i just have to much pride to do it to my car. I think that the entire v6 board should purchase one car, an old 2.8, and then try all types of different mods on it to see what happens, before we screw up our cars.

 

A fan placed over the MAT sensor won't help at all. It's not like the MAT gets hot, like an engine's radiator, or like a computer's microprocessor.

If you were mounting the MAT in a "hot" area, and blowing air from a "cool" area towards it, then yes, it would work. However, why not just hang the MAT in a cool area to begin with?

Here's something interesting to note: The GM/Helms service manual for my '86 Firebird mentions that the "MAT compensates the MAF." It doesn't go into further detail on that statement, however, I imagine that the MAF sensor uses the MAT's reading (of air temp) to use for decoding air flow. Hot air would be less dense, and maybe the MAF needs to know this?

If I remember, on Monday, I'll bring in the chart that shows which MAT resistance values correspond to which temperature.


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards

 

engineboy, so the mat basically just adjusts the fuel to compensate for tempature changes? what if, now this is completely theoretical, extended the MAT leads into the car and hooked a potentiometer (damn i cant spell.. just a rotary pot), then could adjust air/fuel (to a certain extent) from inside my car, while driving?

 

I'm not a big ECM guru but I imagine it would work. (to an extent)

The MAT is just a small piece of the fuel control puzzle.

Maybe Vader or one of the other driveability guys could help you out a little more than I can......

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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

 

As promised, here's the chart corresponding to MAT ohm readings and temperature.

Scoob, yes, you could. It might not affect the motor that much, but you could... and keep in mind you might throw off the MAF (see my previous note).

<table BORDER=3 CELLSPACING=3 CELLPADDING=3 >
<tr><td>Temp F</td><td>Temp C</td><td>Ohms</td></tr>
<tr><td>210</td><td>100</td><td>185</td></tr>
<tr><td>160</td><td>70</td><td>450</td></tr>
<tr><td>100</td><td>38</td><td>1,600</td></tr>
<tr><td>70</td><td>20</td><td>3,400</td></tr>
<tr><td>40</td><td>4</td><td>7,500</td></tr>
<tr><td>20</td><td>-7</td><td>13,500</td></tr>
<tr><td>0</td><td>-18</td><td>25,000</td></tr>
<tr><td>-40</td><td>-40</td><td>100,700</td></tr>
</table>


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards