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-   -   Where you mount your moto map sensor (https://www.homemadeturbo.com/engine-management-10/where-you-mount-your-moto-map-sensor-91708/)

Joshb_ 05-04-2008 03:37 PM

Where you mount your moto map sensor
 
I have a 3bar moto map sensor, these things are TINY......for those of you who have them, where are you mounting them? :6

0b00st0 05-04-2008 04:39 PM

Re: Where you mount your moto map sensor
 

Go to radio shack or fry's and get a small project enclosure. Put it in there.





Chris Harris 05-04-2008 11:44 PM

Re: Where you mount your moto map sensor
 
Hollow out a stock Map sensor housing like Madmax patented O0

Joshb_ 05-05-2008 12:40 PM

Re: Where you mount your moto map sensor
 

Originally Posted by xenocron
Hollow out a stock Map sensor housing like Madmax patented O0

Might try to do this if I can find the thread on it

92turbohatch 05-05-2008 10:59 PM

Re: Where you mount your moto map sensor
 

Originally Posted by Joshb_
Might try to do this if I can find the thread on it

https://www.homemadeturbo.com/forum/...?topic=74311.0

I just went the 4 dollar radioshack project box route.

0b00st0 05-06-2008 02:21 AM

Re: Where you mount your moto map sensor
 

Originally Posted by Joshb_
Might try to do this if I can find the thread on it


It's in my sig.



88dx 05-06-2008 02:23 AM

Re: Where you mount your moto map sensor
 
Pff no mounting required i just let it hand their :6

fe3tcourier 05-06-2008 10:28 AM

Re: Where you mount your moto map sensor
 
1 Attachment(s)
I'm pretty sure that the outside of the package needs to be exposed to atmospheric pressure to operate correctly. Could be wrong though. Wait, no, I'm right :

Attachment 17860

I *think* sealing that chamber could cause it to be inaccurate, but I'm probably just being paranoid.

Obviously it has a vacuum reference, but there could be offsets caused by pressures on the case. I know for a fact that if you say tighten the screws that hold them too much you will create wrong readings.

Just a thought before you bury one in epoxy or something.

I assume you guys are talking about the SMD type ones?

Fred.

Chris Harris 05-06-2008 02:00 PM

Re: Where you mount your moto map sensor
 
The motorola sensors are absolute...enclosing the case shouldnt pose a problem.

0b00st0 05-06-2008 02:10 PM

Re: Where you mount your moto map sensor
 

Originally Posted by fe3tcourier
I'm pretty sure that the outside of the package needs to be exposed to atmospheric pressure to operate correctly. Could be wrong though. Wait, no, I'm right :


Fred, only gauge style sensors need P2 to be exposed to atmo. In the absolute pressure sensors, the P2 port is closed off and an almost complete vacuum is created behind the strain gauge sensor.




ososlohatch 05-06-2008 02:17 PM

Re: Where you mount your moto map sensor
 

Originally Posted by fe3tcourier
I'm pretty sure that the outside of the package needs to be exposed to atmospheric pressure to operate correctly. Could be wrong though. Wait, no, I'm right :

http://i260.photobucket.com/albums/i...ss-section.png

I *think* sealing that chamber could cause it to be inaccurate, but I'm probably just being paranoid.

Obviously it has a vacuum reference, but there could be offsets caused by pressures on the case. I know for a fact that if you say tighten the screws that hold them too much you will create wrong readings.

Just a thought before you bury one in epoxy or something.

I assume you guys are talking about the SMD type ones?

Fred.

very pretty thought fred

Tom-Guy 05-07-2008 03:12 PM

Re: Where you mount your moto map sensor
 

Originally Posted by xenocron
Hollow out a stock Map sensor housing like Madmax patented O0

I declare infringement. My post history on pgmfi.org places me as the originator of the idea.

HiProfile 05-07-2008 08:54 PM

Re: Where you mount your moto map sensor
 
Your history also lists you as the biggest whiner in teh whole world, so... :l

Freescale sensors (all rights sold to them in 2006) need that P1 hole/port (depending on the package type) exposed to air. The readings actually can be skewed if the case is distorted, since the way they work is measuring how much that 'die' flexes. Cementing it in epoxy in the sealed OEM housing will not get you any usable readings, since the epoxy and case are too rigid. Also they have gauge (atmosphere vs input) and differential (input 1 vs input 2) sensors, which won't work on cars.

You can use any sort of small case, as long as it is totally sealed (besides the vacuum port) and can hold hold the boost level you plan on running. ---- you could even use a condom and a rubber band... :1

0b00st0 05-07-2008 09:50 PM

Re: Where you mount your moto map sensor
 

Originally Posted by Joseph Davis
I declare infringement. My post history on pgmfi.org places me as the originator of the idea.


Prove it nignog. >:D




Tom-Guy 05-08-2008 02:01 AM

Re: Where you mount your moto map sensor
 

Originally Posted by MADMAX

Prove it nignog. >:D

Ask blundar, he tuned on a car I equipped with one.

I'm fairly sure Speed Phreak and Minor Threat were aware of it at the time. I kept it mostly on the DL because I didn't want the idea to get out while I was making money at the streetraces.

Minor Threat 05-08-2008 02:05 AM

Re: Where you mount your moto map sensor
 
I'll vouch for that.

No one around here knows enough about Honda's to even know what a MAP sensor is half the time. Shave the VTAK off the valvecover and you're good to go!

Tom-Guy 05-08-2008 02:11 AM

Re: Where you mount your moto map sensor
 
Also, pgmfi.org will vouch for that: http://forum.pgmfi.org/viewtopic.php...ilit=street%2A

0b00st0 05-08-2008 04:07 AM

Re: Where you mount your moto map sensor
 

Originally Posted by Joseph Davis
Also, pgmfi.org will vouch for that: http://forum.pgmfi.org/viewtopic.php...ilit=street%2A


All hail JD, oh creator of the "stock" MAP sensor. :y


Definitely never saw that thread on PGMFI though.




Tom-Guy 05-08-2008 04:15 AM

Re: Where you mount your moto map sensor
 
Well, you are a brighter than average egg and it does seem like a logical conclusion when you think about it. It's a sad reflection on everybody else that it hadn't been done sooner.

fe3tcourier 05-12-2008 12:11 PM

Re: Where you mount your moto map sensor
 

Originally Posted by HiProfile
The readings actually can be skewed if the case is distorted, since the way they work is measuring how much that 'die' flexes. Cementing it in epoxy in the sealed OEM housing will not get you any usable readings, since the epoxy and case are too rigid.

Cheers, exactly.


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