Need help identifying this MS2/V357

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billr
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Re: Need help identifying this MS3

Post by billr »

My guess is that it is a baro sensor, so its port should be open to atmosphere.
ponie1992
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Re: Need help identifying this MS3

Post by ponie1992 »

Is it possible to pull the current map from the MS and see what sensors were being used?

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Jeremy
billr
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Re: Need help identifying this MS3

Post by billr »

Sure, you will get the opportunity to load the MSQ from the MS to TS every time you connect to MS.
ponie1992
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Re: Need help identifying this MS3

Post by ponie1992 »

Ok, so I was able to connect to the MS and I think I saved the current map correctly. This is what I got.
Attachments
Megasquirt_existing_tune_89GT_011718.msq
(117.81 KiB) Downloaded 18 times
Jeremy
billr
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Re: Need help identifying this MS3

Post by billr »

A second sensor for baro isn't enabled in that MSQ, so the question remains: what is that sensor wired to?

Are you sure what kind of device that is, can you post the manufacturer and P/N?
ponie1992
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Re: Need help identifying this MS3

Post by ponie1992 »

billr wrote:A second sensor for baro isn't enabled in that MSQ, so the question remains: what is that sensor wired to?

Are you sure what kind of device that is, can you post the manufacturer and P/N?
I believe it says Yitron Technology on it. I'm guessing the part number is what's on the sticker?
I asked the previous owner about it, but can't get a response.

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ponie1992
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Re: Need help identifying this MS3

Post by ponie1992 »

Didn't get a chance to trace the wires down. I'll have to do that this weekend.

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ponie1992
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Re: Need help identifying this MS3

Post by ponie1992 »

I did notice the vacuum line at the MS goes to the boost/vacuum gauge. There is a T but it's capped off from going anywhere else. Would any of you know if my MS has a built in MAP sensor?

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jsmcortina
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Re: Need help identifying this MS3

Post by jsmcortina »

Unless it has been removed, a standard MS2/V357 has an internal MAP sensor yes.

James
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prof315
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Re: Need help identifying this MS3

Post by prof315 »

jsmcortina wrote:Unless it has been removed, a standard MS2/V357 has an internal MAP sensor yes.

James
And based on the picture of your mainboard it appears to be there.
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ponie1992
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Re: Need help identifying this MS2/V357

Post by ponie1992 »

prof315 wrote:
jsmcortina wrote:Unless it has been removed, a standard MS2/V357 has an internal MAP sensor yes.

James
And based on the picture of your mainboard it appears to be there.
Ah ok. So, just run a vacuum line off the T to the manifold?

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rickb794
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Re: Need help identifying this MS2/V357

Post by rickb794 »

Yes if you want the MS and gauge to see manifold vacuum they will need to be connected.

Your TFI wiring and instructions are in section 6.3 of the manual.
Use only the Extra Manuals found here http://www.msextra.com/manuals/ms2manuals/

I think you will find that Tuner Studio (the paid version) is well worth the $.
https://www.efianalytics.com/TunerStudio/faq.html
Correctly identify your MS ecu here
Read the Do's and Don'ts to avoid the common pitfalls before starting your install or asking for help
Use only these manuals other manuals may cause brain damage or worse.
Blown88GT
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Re: Need help identifying this MS2/V357

Post by Blown88GT »

I'm a little late to this party, but it looks like you're on the right track.
You're '89 is pretty close to my '88.
'88's were Speed Density (except Calif.) They used a MAP sensor on the firewall.
'89's were MAF. They used a BAP sensor on the firewall.
These sensors are not used for the Megasquirt (MS).
I'm still running the TFI.
My Megasquirt is different from yours (see signature), it still uses the factory harness & ECU connector.
The internals are different, too. Both are MS2/Extra
You should use the Ford TPS.
Wonder why yours has an MS3Pro sticker?
1988 Mustang GT, 59k miles, Orig Owner
ProCharger 600B I/C, 12psi, FRP Hdrs, Flwmstr F2, 3G Alt, Contour Fan & DCC, 3.55's, Prog Sprg, Subfms, UCA, LCA, FCA, Tokico 5's, Bridgestone RE-71R 245/40R17, Crane HI-6, Kirban FPR, MS2, DIYPNPF60, Spartan 2, C&L76mm blo-thru MAF, 47lb FRP-LU47
ponie1992
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Re: Need help identifying this MS2/V357

Post by ponie1992 »

Blown88GT wrote:I'm a little late to this party, but it looks like you're on the right track.
You're '89 is pretty close to my '88.
'88's were Speed Density (except Calif.) They used a MAP sensor on the firewall.
'89's were MAF. They used a BAP sensor on the firewall.
These sensors are not used for the Megasquirt (MS).
I'm still running the TFI.
My Megasquirt is different from yours (see signature), it still uses the factory harness & ECU connector.
The internals are different, too. Both are MS2/Extra
You should use the Ford TPS.
Wonder why yours has an MS3Pro sticker?
I soldered in a Ford TPS and actually calibrated it last night. Works great. From what I understand, that's just a sticker and means nothing.

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Jeremy
ponie1992
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Re: Need help identifying this MS2/V357

Post by ponie1992 »

rickb794 wrote:Yes if you want the MS and gauge to see manifold vacuum they will need to be connected.

Your TFI wiring and instructions are in section 6.3 of the manual.
Use only the Extra Manuals found here http://www.msextra.com/manuals/ms2manuals/

I think you will find that Tuner Studio (the paid version) is well worth the $.
https://www.efianalytics.com/TunerStudio/faq.html
Are you referring to the 3.57 hardware manual?

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Jeremy
rickb794
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Re: Need help identifying this MS2/V357

Post by rickb794 »

Yes
The TFI instructions are there.

The MS3Pro sticker gives you a psychological advantage!
Correctly identify your MS ecu here
Read the Do's and Don'ts to avoid the common pitfalls before starting your install or asking for help
Use only these manuals other manuals may cause brain damage or worse.
ponie1992
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Posts: 30
Joined: Sat Sep 30, 2017 7:25 pm
Location: Lexington, SC

Re: Need help identifying this MS2/V357

Post by ponie1992 »

rickb794 wrote:Yes
The TFI instructions are there.

The MS3Pro sticker gives you a psychological advantage!
Gotcha, have that manual in my phone already. Image

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Jeremy
Blown88GT
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Re: Need help identifying this MS2/V357

Post by Blown88GT »

ponie1992 wrote:....that's just a sticker and means nothing.
Only means something if it causes confusion (which it did).
The MS2 can be converted to an MS3 with an add-on board.
https://www.diyautotune.com/product/meg ... board-kit/
1988 Mustang GT, 59k miles, Orig Owner
ProCharger 600B I/C, 12psi, FRP Hdrs, Flwmstr F2, 3G Alt, Contour Fan & DCC, 3.55's, Prog Sprg, Subfms, UCA, LCA, FCA, Tokico 5's, Bridgestone RE-71R 245/40R17, Crane HI-6, Kirban FPR, MS2, DIYPNPF60, Spartan 2, C&L76mm blo-thru MAF, 47lb FRP-LU47
rickb794
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Re: Need help identifying this MS2/V357

Post by rickb794 »

"Those that know" will realize that a MS processor will not fit in that case.
And a MS3Pro is a completely different appearing animal.
Correctly identify your MS ecu here
Read the Do's and Don'ts to avoid the common pitfalls before starting your install or asking for help
Use only these manuals other manuals may cause brain damage or worse.
ponie1992
MS/Extra Newbie
Posts: 30
Joined: Sat Sep 30, 2017 7:25 pm
Location: Lexington, SC

Re: Need help identifying this MS2/V357

Post by ponie1992 »

Update: finally heard back from the previous owner. The sensor on the firewall is for the boost sensor he was using. He confirmed I just need to run manifold vacuum to the T before the MS. Thanks for everyone's input on this!

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Jeremy
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