Kev, I was looking at pics of your sc and engine bay and saw something that made me have questions. The little black box that is screwed into the right side of the intake head, what is this? The reason that I ask is because I thought that you and I had pretty close production dates on our cars and well you have three hoses and other things going into this box. I only have one hose and one sensor. I went to my local dealership today and looked at a 2k max they had and it had the same things you do.

My question is what is this box and why is mine so different from other ones that I look at. I am still trying to figure out my map sensor problem and the hose that comes off of the map sensor goes into this box(kindof). My production date is 05/99, I thought yours was close.

Also why I am asking questions, do you think that unplugging the map sensor will make the engines compression go up? Just curious.

 

I'm pretty sure he has a FED-spec, so maybe you have a CALI-spec. Not sure. Anyways, the MAP(manifold air pressure) sensor has no effect on compression, but tells the ECU how much fuel is needed due to the amount of air pressure/volume/density entering the manifold. The only way to change compression is to modify the cylinder/head volume. I doubt the car would run, at least normaly, without the MAP sensor. I know the Max has a MAF, so I'm not even sure the Max has or would need a MAP sensor. Usually, it's one or the other.

 

Well I don't know which spec I have. If the car usually has one or the other then what is the sensor that sits on the front piece of the factory air intake. This is the sensor that my dealer told me is causing my check engine light that has been on now for the last 8 months. It is getting old and I am trying to fix it. My car was surging at idle really bad the other day so I unplugged this sensor and now it has no problem. I don't understand how my car is running better without a sensor plugged in? Also I happen to notice today at the dealership when looking at this other 2k max that on the front of the engine you will see a mount where there is sensors between the fans and the engine. My max only has 2 sensors and the other one has 4? I don't understand why there are all of these differences.

 

I'm not really sure what it is... could it be use for our intake runners? My car is a Cali spec (prod date: 7/99 I think).

 

Then it's the OTHER way around. Kev has a CALI-spec(4 02-sensor plugs) and you are lucky to have a FED-spec(2 02-sensor plugs). I believe the sensor you unplugged is an AIR INTAKE TEMPERATURE sensor that is located in the "scoop" right before the air box. Depending on the ECU, that sensor adds or reduces fuel/timing depending on the outside temperature. With most intakes people just leave it hanging near the air box, so it reads underhood temps vs. incoming air temps which doesn't seem to make a noticeable difference. I guess the ECU uses other sensors to compensate. Just a guess though.

 

now that explains the 2 sensors vs kevs 4 but the one that I unplugged was the one that is located to the side of the front piece of the factory intake system. Not the air temp sensor I made a hole for that one in my place racing intake. I am talking about the one that is just mounted on the side of the intake, not in it.

 

Interesting, b/c my ECU light will come on when ever I boost hight for a long time, if I am driving on hwy at about 80, and if I throw it into 3rd gear and get the Revs high the ECU light will light up. When I check the code its always the MAP sensor. So I am not sure why it keeps comming on, on a regular driving all is good. So some how it is reading boost.

 

I don't get it, because it made the check engine light come on as soon as I installed the CAI. I know that the map sensor does have a hose that runs into the little arm that comes off of the upper intake tube on the CAI. I wonder if it is reading such a high flow of air coming through the CAI that it is constantly triggering it like it did for "The New Climax". I wonder how I can fix this. I might could undo the hose going from the map sensor to the intake and just let the map sensor get a reading of very little air intake? How would this mess up the ecu's configuring fuel/air mixture. What do you guys think?

 

I also have the MAP sensor code thrown by the ECU.

 

Is this a good thing?

 

No

 

but, it could be since that means the MAP sensor is reading the BOOST

 

Maybe I'm REALLY running 10 PSI's?

*BOOM*

 

so when you replace your tranny with the 2k2 6 speed, sell me your VB

 

Well Kev if you find out why you have the MAP sensor code let me know how to fit it. Tell TurboMax this is a high priority.

 

OK, you got first dibs.

Hehehehe Why don't you tell him, Mr. 2 PSI.

 

You are the messenger Kev. Does your light come on all the time, or is it just under a heavy boost?

 

The Camshaft Position sensor keeps the light on, so

I'll let you ask him instead.