MSD dashhawk questions

[Jays07MS3]

my MS CAI reads IAT 2-3 degres above ambiant and i think temp sensor is before turbo beacuse even after intercooling it is still over ambient and i havnt seen any temp sensors after turbo. i belive temp sensor is in that pancake looking thing inbetween CAi and turbo.

Yeah you are right. I believe the IAT sensor is actually in the MAF housing.

I found this from a Mazda6 site.
http://www.mazda6tech.com/index.php?option=com_content&task=view&id=62&Itemid=1

The teardrop thing is the IAT sensor. I believe our MAFs are the same way. I'd have to check to make sure though.

 

[Rotus8]

Yeah you are right. I believe the IAT sensor is actually in the MAF housing.

I found this from a Mazda6 site.
http://www.mazda6tech.com/index.php?option=com_content&task=view&id=62&Itemid=1

The teardrop thing is the IAT sensor. I believe our MAFs are the same way. I'd have to check to make sure though.

There are two temp sensors, one before the turbo, combined with the MAF sensor called the "intake air temp" and one in the intake manifold as part of the MAP sensor, called the "boost air temp".

 

[Jays07MS3]

There are two temp sensors, one before the turbo, combined with the MAF sensor called the "intake air temp" and one in the intake manifold as part of the MAP sensor, called the "boost air temp".

Well that makes sense. I would think that the ECU has to know the actual temps entering the combustion chamber in order to correct the fuel. But its strange that this "boost air temp" isn't broadcast on the CAN bus. If it is, for some reason the DashHawk can't read it. I wish it could Then you could log the difference in temps from the stock IC to an aftermarket one.

Rotus, do you have a electrical diagram showing the boost air temp sensor?

 

[Rotus8]

Well that makes sense. I would think that the ECU has to know the actual temps entering the combustion chamber in order to correct the fuel. But its strange that this "boost air temp" isn't broadcast on the CAN bus. If it is, for some reason the DashHawk can't read it. I wish it could Then you could log the difference in temps from the stock IC to an aftermarket one.

Rotus, do you have a electrical diagram showing the boost air temp sensor?

For the pinout of the ECU with the sensor signals look here: http://www.mazdas247.com/forum/showthread.php?t=123687033

I believe it is on the CAN bus, but on a proprietary PID so it requires MS3 specific software to read it. I think my Auterra reads it, but I am not sure, I'll have to check.

 

[dan1101]

Just tried my Dashhawk out tonight, it was 48 degrees outside and the IAT was 58. Guess I need a CAI, summer will be even worse I'm sure.

 

[Jays07MS3]

Just tried my Dashhawk out tonight, it was 48 degrees outside and the IAT was 58. Guess I need a CAI, summer will be even worse I'm sure.

Wow, thats quite a difference. I never had my dashhawk when I had my stock intake. But with the CAI, I see around 0-4 degree difference from AAT while driving. Glad to know that the CAI is doing its job though.

 

[$inCitySpeed3]

all i can say is that it's prolly one of the coolest thing i have bought for a car

 

[stefano18]

I have two questions, How close is the boost readings?? and what are you guys doing for mounting the dashhawk?? Because I don't want to drill holes or mess with my dash much

 

[dkswim]

no boost readings as per reading PSI that i can find.calsulater load can tell you somewhat and then you can use map sensor but it requires running math in head. i ended up mounting mine too the window i made a bracket out of alluminum and drilled some holes in it to allow it to accept a suction cup ill try and get a pic of it so you can see how easy it was.

 

[Jays07MS3]

no boost readings as per reading PSI that i can find.calsulater load can tell you somewhat and then you can use map sensor but it requires running math in head. i ended up mounting mine too the window i made a bracket out of alluminum and drilled some holes in it to allow it to accept a suction cup ill try and get a pic of it so you can see how easy it was.

Huh? It displays boost in PSI. The PID is under the AIR category. I even posted pictures of it here http://www.mazdas247.com/forum/showpost.php?p=3372217&postcount=31. It takes the MAP reading and subtract the barometer reading and converts from kPA to PSI to get gauge pressure.

And I have mine mounted on the steering column as shown in the pictures. No drilling required, just some velcro.

 

[dkswim]

i guess it really helps if i run revsion 2.3 insted of 2.03 that might help a lot. here is some pics of how mine is mounted and the piece i made

 

[Falconx84]

2.03 is horrible.... its amazing what a simple update will do.... still waiting on a/f ratio update....

 

[dan1101]

I used the velcro tape to attach mine to the area just above and to the left of the center info display on the dash, partly on the vent. They way I have it mounted, I can't see the buttons because of the steering wheel but I can see the entire display. I ran the wire from the OBDII plug under the hood cable and along the trim under the steering column, out through the trim around the steering column, and up along the right-hand gauges (fuel, temp, etc.) Looks decent there.

 

[Jays07MS3]

2.03 is horrible.... its amazing what a simple update will do.... still waiting on a/f ratio update....

Its already out. 2.4 Beta 3 has the correct a/f ratio readings. Works great.

 

[Falconx84]

whoo-hoo!!!! thanks jay!!!

getting my dashhawk to update it now

(btw, its kinda odd that everytime I talk about how good a current version is, you post right after me telling me they updated it, lol)

 

[dkswim]

you know what that means? you need to post about it more. yeah 2.03 was horrible. now ican set it up screnes on the computer that is very helpfull

 

[AutoXRacer]

Does anyone have pictures of the dashhawk connected to the OBDII port?

 

[dan1101]

Does anyone have pictures of the dashhawk connected to the OBDII port?

Not sure what you mean. If you're asking where your OBDII port is, it's the left lower part of the dash, right where your left knee is when you're in the driver's seat. They made the port part of the dash, that surprised me, usually they're sort of hidden up under the dash.

 

[AutoXRacer]

Not sure what you mean. If you're asking where your OBDII port is, it's the left lower part of the dash, right where your left knee is when you're in the driver's seat. They made the port part of the dash, that surprised me, usually they're sort of hidden up under the dash.

Does anyone have a picture of their Dashhawk connected to the port?
I am wondering what the connector on the Dashhawk looks like...
Does it stick out like a sore thumb...or is it a low profile connector...?

Since OBDII connectors are usually big bulky connectors, I was wondering what the Dashhawk one looks like? Once connected is it easily noticed or do you have to point it out?

Thanks...

 

[dan1101]

The connector is about 2" wide, with the wire coming out of it at a 90 degree angle. The plug in the dash is right above a storage compartment I hadn't even seen in my ~4 days of driving my new MS3. So unless you're on the driver's side I don't think you'll see it at all. I can take a few pics though.