In the April issue of Vette Magazine, under C4 Projects, the talk about relocating the MAT sensor from the engine side underneath the intake plenum to the side of the intake tube, behind the air filter, you get a much more accurate reading of the temperature (cooler at this point.) The article further states that high air inlet temp. can lead to a change in the detonation characteristics of a given fuel mixture causing the computer to retard the ignition timing. So, by moving the location of the MAT sensor to the filter housing, the sensor is measuring the inlet air BEFORE it becomes heated so the ignition won't be retarded quite as often. Finally, the article mentions a "kit" that is sold for this task but does not mention sold by whom??? Does anybody know who is selling this kit?

 

MAM sells it. Sounds good in theory, but of all the "snake oil"mods i've done , my car ran no differently at the track. I'd offer t osell you my brand new in the box unit, but I think your'e wqasting your money. Save up for some 1.6 rockers or exhaust. Those will help

 

I to have wasted money on "snake oil" mods. things you can't go wrong with are exhaust and valvetrain components. Or even underdrive pulleys. they make the motor spin up faster. but as mentioned I'd go with headers or 1.6" roller rockers. prob the 2 best mods for the money. unless you want to do all the work of installing a cam. so my advice before purchasing anymods ask for input from the forum. they could've save me a couple hundred bucks.

 

Check out the C4 FAQ'S this does nothing. Almost bought it myself!

 

I have the MAT relocation kit installed mainly to get the sensor out from under the plenum. Though it does provide a truer intake air temp reading I haven't seen any gains.

What year Vette do you have and what mods so far? There are several low cost mods to the L98 that really do bring some power gains.

 

On a MAF car the MAT/IAT sensor relocation does nothing. The ECM does not use the temp for calculating the fuel/spark.

On a MAP car it makes a diffence in the calculations but it is not very useful without proper ECM tuning.

My $0.02, YMMV, etc.

 

Think about that for a moment....

...sounds like a sure way to stir up some heavy detonation to me.
Remember, you aren't cooling the intake air, you'd just be fooling the system into thinking it is cool.

Now, about that Tornado you just ordered...


Larry
code5coupe

 

I dont really get how it measures a more "accurate" air temperature for intake air. Isn't the idea to get the most accurate measure of air temperature, as close to the cylinders as possible? Why measure and have the computer interpret conditions of the air, if those conditions change before they enter the cylinders? If anything, relocating the temp sensor creates a less accurate reading, of actual air conditions inside the intake.

 

The problem is that the MAT gets heat-soaked by the hot plenum so that the temp of the cooler air within the plenum isn't really sampled accurately.

Though the relocated sensor is measuring air temp in the cooler filter area, the air is moving fast enough so as to not pick up much heat before it gets to the cylinders.

 

dale is right on.on a maf car the mat sensor only tells the egr whan its warm enough to start operating,does nothing for performance.

 

Save some money and buy an air foil instead. They both will give you the same HP gain and you'll save a little bit of cash. I think my arithmetic is still on the money; 0 - 0 = 0.

 

My understanding of the purpose of moving the sensor, is not so that it doesn't pick up hot air in the inake, but more so that it does not get heat soak from the allum that it is mounted in. When you are driving, the air is passing through the plenium, so it should be almost the same temp as when it passes though the air filter housing, except with the exception of the hot water passing through the TB.

 

If you search about this you find many posts about how to get some Cheap HP !

The IAT relocating kit is a type of mod that it won`t do much gain but when you will keep adding these small little mods they actualy add up some hp.

You can do this modification almost free , all you need to buy is a plug that you have to put in instead of the sensor . On a friend of mine`s corvette I was talking to him about this mod and he told me let`s go and do it . We took off the plenium , took the sonsor off from the plenium , installed the plug that has tha same thread as the sensor in the plenium , He cut down the wires about 1 inch before they enter the plug of the IAT sensor and he extended them with a wire long enough so the plug will reach the air filter houseing . we put the plenium back in and while I was puting the plenium in he drilled a hole in the air filter housing so that the sensor will go in , he drilled the hole a bit smaller than the sensor so the thread will hook nice in the plastic housing.

if you have any problem about cuting the IAT sensor wires don`t do it , go buy the kit . If you have any problems about how to do it or you didn`t understand something E-mail me and I will help you out .

There also many thing that you can do cheap , like bypass the coolant from the throtle body , cut down the meatal lid that is located over the air filter , take off the screens off the MAF sensor . all of them are little things but when you add them up together they do something HP wise.

Good luck
Marlon

 

Biggest performance gain I got was when I traded in my 300+lb girlfriend for a nice 110 lb model... Worked great.. for awhile..

 

 

Want HP install springs rockers and if it's an L98 exaust.
If it is an LT1 forget the exaust won't help.
Want to go fast Juice it .
Want a .10 in the 1/4 ?have your girl friend drive the car and you watch.

 

Push the accelerator completely to the floor!