Buying Used MS3 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MEGAsquirt A place to collectively sort out this megasquirt gizmo

Reply
 
 
 
LinkBack Thread Tools
Old 02-17-2012, 01:30 PM   #1
Junior Member
Thread Starter
 
Join Date: May 2010
Location: Temecula, CA
Posts: 147
Total Cats: 2
Default Buying Used MS3

I'm going to check out a MS3 /MS3x today.
It's 'used', but was never installed.

http://www.diyautotune.com/catalog/m...led-p-435.html
That's the link he bought from - it was assembled by DIY Autotune.


I'm sure signs of installation would be visible (scratches, twisted/ crimped harness) - but I want to make sure I'm getting what I'm paying for.

Is there something I can look for to prove this is operational, or do I need to take the sellers word? I do not have a Stim.

Thanks.
vortexblue is offline   Reply With Quote
Old 02-17-2012, 01:44 PM   #2
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,323
Total Cats: 1,920
Default

Quote:
Originally Posted by vortexblue View Post
Is there something I can look for to prove this is operational, or do I need to take the sellers word? I do not have a Stim.
Well, if you have access to a female DB-37 connector, you could apply 12 volts to it on pins 28 (+) and 1 (-) of the lower connector. This will power it up sufficiently that you can connect a laptop to it and validate that the CPU is alive via TunerStudio.


Beyond that, buying used ECUs can be a bit of a crap-shoot. I'd at least open the case and look around inside. Since this is an 3.57 / MS3X-based unit, there should be no jumper wire and no hand-soldering of any kind.

You can also learn a lot about a circuit board with your nose. When a component (such as a semiconductor or a capacitor) explodes, it leaves behind an odor which tends to linger for quite a long time. A "normal" MS should have no perceptible odor at all. One which has had a component explode and be replaced, even weeks or months in the past, will likely give off a faint burned smell.
Joe Perez is offline   Reply With Quote
Old 02-17-2012, 02:05 PM   #3
Junior Member
Thread Starter
 
Join Date: May 2010
Location: Temecula, CA
Posts: 147
Total Cats: 2
Default

it's got this harness with it:
http://www.diyautotune.com/catalog/1...eady-p-43.html
So I should be able to get some power to it.


I do know the smell you're talking about - good suggestion.

I'm going to download Tunerstudio right now to get familiar.

Thanks. Props!
vortexblue is offline   Reply With Quote
Old 02-20-2012, 09:29 PM   #4
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

Quote:
Originally Posted by Joe Perez View Post
Since this is an 3.57 / MS3X-based unit, there should be no jumper wire and no hand-soldering of any kind.
The SMD boards are mostly robot assembled, but all of the through hole parts (such as the TO parts on the heatsink) are hand soldered in-house, here in Suwanee, GA. The stepper jumper wires should also be in place (4 wires) as well as the jumper from JS9 to S12C (which provides +12V to the stepper chip). If the ECU has no non-standard mods, there will also be a jumper from JS10 to the center pin of Q16. Q16 won't be populated though.
Ben is offline   Reply With Quote
Old 02-20-2012, 10:53 PM   #5
Junior Member
Thread Starter
 
Join Date: May 2010
Location: Temecula, CA
Posts: 147
Total Cats: 2
Default

Thanks Ben,
That looks like what I have. (see pics)











Attached Thumbnails
Buying Used MS3-megasquirt004.jpg   Buying Used MS3-megasquirt005.jpg   Buying Used MS3-megasquirt006.jpg   Buying Used MS3-megasquirt003.jpg   Buying Used MS3-megasquirt002.jpg  

Buying Used MS3-megasquirt001.jpg  
vortexblue is offline   Reply With Quote
Old 02-20-2012, 11:02 PM   #6
Junior Member
Thread Starter
 
Join Date: May 2010
Location: Temecula, CA
Posts: 147
Total Cats: 2
Default

So,
I suppose my next step is to get this thing tested. I still haven't plugged it into power. Does anyone want to sell/ rent a Jim stim? If not, I may just go for the install and see what happens. I still have some $$ to spend.

Speaking of this, what's the best route here for installation? All new MS wiring or DIY BOB? I'm a noob to the MS3 (I built a MS1 years ago, worked fine on the stim, but sold the project before wiring it) - but I promise, I've been reading all I can on the subject!

To be honest, I like the idea of the 'Been-there-done-that' knowledge base of the DIY PNP, but most of the threads I read say this ecu will be the way to go.

The car is a 90 1.6L non-turbo. I do have a 94' 1.8L non-turbo that would like to find it's way into the bay. I also have the whole harness for that car - maybe some of the harness will be handy (injector harness?)
vortexblue is offline   Reply With Quote
Old 02-21-2012, 04:21 AM   #7
Junior Member
iTrader: (3)
 
Join Date: Feb 2010
Location: boston, ny
Posts: 282
Total Cats: 0
Default

you bastard.... lol....i emailed that guy too off craigslist in new jersey? i was gonna send my buddy over he was like a half hour away. you got that for a steal man good job....
yunvmyegt is offline   Reply With Quote
Old 02-21-2012, 01:16 PM   #8
Junior Member
Thread Starter
 
Join Date: May 2010
Location: Temecula, CA
Posts: 147
Total Cats: 2
Default

Yep, that's where I got it.

I wasn't really in the market for a megasquirt yet, but a good deal forced the issue...
vortexblue is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Buzzing from driver side of engine bay? (MS3 install) nick470 MEGAsquirt 7 06-16-2017 02:53 PM
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Bizarre connection issue? nick470 MEGAsquirt 1 09-30-2015 11:32 PM


Tags
mega squirt, megasquirt

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:41 AM.