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Engine Management, Fuel, Spark, EGTs, and Air/Fuel Ratios This forum includes general electrical, modification, tuning, repair, replacement, identification and restoration of all components mentioned above including SMEC, SBEC, Logic Modules, aftermarket engine management, etc. Nitrous oxide posts go in here. This is the place

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Old 02-20-2013, 11:33 AM   #1
Exclamation Buying used Megasquirt What to look for?  
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I found a used megasquirt I'm going to be looking at today or tomorrow. The guy says it includes a harness and all sensors I will need for my 2.4l turbo. He said it is a V3? What should I look for to make sure it is ok. New to megasquirt and this deal was dropped on me before I had much time to research. He is also asking $250.00.
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Old 02-20-2013, 12:31 PM   #2
Re: Buying used Megasquirt What to look for?  
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anyone doing Megasquirt should consider talking to our Megasquirt vendor as there is no many options. Una a Gearhead here is another good resource for MS info with these cars.

http://www.turbododge.com/forums/14383-matt-cramer.html

http://www.turbododge.com/forums/6183-una.html
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Old 02-20-2013, 01:48 PM   #3
Re: Buying used Megasquirt What to look for?  
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The guy who is selling it says it's a MSII with the v3.o main board. ( I personally have not seen it yet) He purchased it to use on his SRT4 and then sold the car. A wire harness and needed sensors are included as he stated? I'm going to be running a SRT4 engine in my omni so I thought this would be perfect. I mostly want to know what hardware I need to look for and make sure I'm getting a fair deal to make my project work. The circuit construction and tuning can wait for another day, as I realize that is a learning experience.
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Old 02-20-2013, 01:58 PM   #4
Re: Buying used Megasquirt What to look for?  
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I would ask who built it. There are many vendors, each has their own take on what the correct mods are for 2.4 support.
As for what it's worth, I'd say $250 would be a good deal, over $350 and you might consider going with a new unit. Especially if you can solder, as you can get a MS3 kit around that price.
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Old 02-20-2013, 08:02 PM   #5
Re: Buying used Megasquirt What to look for?  
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I spoke with the guy that's selling it again and he said he bought it from a buddy who built it and was originally running it on a sohc neon with a 50 trim turbo setup.
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Old 02-21-2013, 12:22 AM   #6
Re: Buying used Megasquirt What to look for?  
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A nice option is coil on plug with MS too BTW.
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Old 02-26-2013, 02:09 PM   #7
Re: Buying used Megasquirt What to look for?  
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Well I picked it up today all seems to be ok with it visually, I have not connected it to a jimstim or anything so hopefully my gamble paid off. I also got a 6 foot harness and a intake and coolant temp sensor with the deal. Not bad for the $200 I hope. It says symtechlabs on the back. I opened it up to inspect the board and this is it
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Old 02-26-2013, 03:04 PM   #8
Re: Buying used Megasquirt What to look for?  
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Hate to be the bearer of bad news, but you have an MS-I with a version 3.0 mainboard. it is NOT an MS-II. An MS-II would have a daughter-card processor like below instead of that big black IC on the center right.

EDIT: Also, Symtech labs is very active on the MSextra forums HERE so you can probably message them and get more details on your specifically built unit

MSII processor (pic from diyautotune.com)
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Old 02-26-2013, 04:32 PM   #9
Re: Buying used Megasquirt What to look for?  
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Shoot, I wish I would of known that before. Oh well ya live and learn. I think I still did ok with the deal. The msI goes for about $200.00 plus I got a $67 cable and 2 $20 sensors for free basically. I guess I will try to see if I can adapt the daughter board to my setup. I see they are around $111.00 for the board. I figured something like this would happen with my luck.
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Old 02-26-2013, 08:58 PM   #10
Re: Buying used Megasquirt What to look for?  
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Should just skip the MS-II and go for a full MS-III.. Especially if the price of the MS2 has gone up to $111.. That's nuts..
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Old 02-26-2013, 10:12 PM   #11
Re: Buying used Megasquirt What to look for?  
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Yeah, I just noticed the price on MSIII is really not a whole lot more. If I'm gonna upgrade I may as well go with 3.
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Old 02-27-2013, 08:37 AM   #12
Re: Buying used Megasquirt What to look for?  
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MS-III with MSX will run about $330 (Processor $200, MSX $90 and a new taller case at $40), but you get a boatload of other options. I'd also suggest contacting Symtech to get more info on what they did/didn't do on your v3 board and how to update it to MS-III.

If you don't need all the I/Os of the MSX, the MS-III with case is only $240 at that point. Not bad compared to upgrading to an MS-II
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Old 02-27-2013, 11:59 AM   #13
Re: Buying used Megasquirt What to look for?  
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Thanks for all the info. I will definitely look into my exact unit a little more. I'm still at the early stage of my build project so my needs may change as I go but now I have a good start at least.
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