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Megasquirt project recommendations

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  • dieselgeek
    replied
    Re: Megasquirt project recommendations

    cool vid!!

    I remember the days before MS was the most widely used engine management. People used to say things like "I wouldn't put that junk on my car"

    things sure have changed in three years!

    Leave a comment:


  • Two Lane Blacktop
    replied
    Re: Megasquirt project recommendations

    Check out the 2 vids at the top of this thread:


    http://www.bigblockdart.com/index.ph...&topic=25622.0



    ---

    Leave a comment:


  • shaun callaway
    replied
    Re: Megasquirt project recommendations

    Chad

    you should post a pic of what you did.

    Scott

    Do you have a pic of this anywhere.

    Leave a comment:


  • shaun callaway
    replied
    Re: Megasquirt project recommendations

    i think this picture would be good to show, along with yours.


    Leave a comment:


  • dpaqu
    replied
    Re: Megasquirt project recommendations

    It would be cool if somebody would market a pulley/toothed wheel combo for popular engines like the SB Chevy.

    Along the same lines I was particularly impressed by this guys set up.
    http://www.hbci.com/~tskwiot/2002_MSII.html

    He used JB weld to make a flange were there was none before to bolt up a Ford EDIS trigger wheel.



    If anyone else has pick/links to other setup ideas please post.

    Leave a comment:


  • JoeyG
    replied
    Re: Megasquirt project recommendations

    Originally posted by revolutionary
    On the LT1 we have at the shop we put on an Electromotive (same as anyones) 36-1 tooth wheel on the front of the stock balancer by tapping the blank holes there and ran a plane jane crank trigger off it to the MS. The way we have it spaced out is in the way of the Opti spark plug wires but we aren't using those. We're running coil packs. You can make up a different bracket to mount the pickup in a different location.

    Also using the factory manual, we cut into the factory harness to have the MS run the injection and ignition but the factory computer still runs whatever is left. Cut D9 on the blue harness to axe the MIL on the dash. The MS harness can run through an existing hole under the factory ECU and you can mount the MS behind the glove box for a totally hidden system that still retains the factory engine wiring harness for an OEM look.
    good tip

    Leave a comment:


  • revolutionary
    replied
    Re: Megasquirt project recommendations

    On the LT1 we have at the shop we put on an Electromotive (same as anyones) 36-1 tooth wheel on the front of the stock balancer by tapping the blank holes there and ran a plane jane crank trigger off it to the MS. The way we have it spaced out is in the way of the Opti spark plug wires but we aren't using those. We're running coil packs. You can make up a different bracket to mount the pickup in a different location.

    Also using the factory manual, we cut into the factory harness to have the MS run the injection and ignition but the factory computer still runs whatever is left. Cut D9 on the blue harness to axe the MIL on the dash. The MS harness can run through an existing hole under the factory ECU and you can mount the MS behind the glove box for a totally hidden system that still retains the factory engine wiring harness for an OEM look.

    Leave a comment:


  • std
    replied
    Re: Megasquirt project recommendations

    Thanks. I will have to look into it.

    Leave a comment:


  • TheSilverBuick
    replied
    Re: Megasquirt project recommendations

    Originally posted by std
    Do you think it will work on a motorcycle?
    They make a "Microsquirt" that comes in a small casing for such things. All the other FI hardware would have to be adapted to the motorcycle or take an existing FI motorcycle and run it with it.

    Leave a comment:


  • std
    replied
    Re: Megasquirt project recommendations

    Do you think it will work on a motorcycle?

    Leave a comment:


  • SpiderGearsMan
    replied
    Re: Megasquirt project recommendations

    thats what you get when you outsource to mitsubishi [optispark]

    Leave a comment:


  • atomicsix
    replied
    Re: Megasquirt project recommendations

    Originally posted by dieselgeek
    Originally posted by ecniv
    Originally posted by dieselgeek
    also testing out a new plug & play harness for LS1 engines. MS has a lot of new stuff coming soon,

    -scott
    How 'bout something for us LT1 guys? I'd love to run MS on my Camaro, just too lazy to build a harness...
    Your problem is that freaking Optispark. It's got a low res, 4-cyl signal, which we can't use, and a high-res signal we also can't use (360 teeth).

    However, there are places now making bolt on EDIS wheel adapters for the crank balancer/pulley/whatever. Mount a CKP sensor, I prefer the GM LS1 crank pos sensor, then you can run wasted spark coilpacks. The harness isn't that big of a deal, just use your stock one but make sure you understand how it works.

    If you have an OBDII LT1 you can use the factory crank trigger into the Squirt to control fuel and spark, and then distribute the spark thru the opti distributer High Voltage side.The parts that fail in the Opti are because the high Voltage is in with the VERY precise low voltage optical signal(problematic) if you get rid of the Opti 360 tooth wheel, then the opti is less problematic. I had also heard the rotor like to fly apart at high rpm, althought I've had mine to 7K many times and it still works.

    I have been meaning to switch my RX7 to a squirt but I have too many projects and it still runs,so it will be messed with last.(Or if the opti does go out)

    Leave a comment:


  • dieselgeek
    replied
    Re: Megasquirt project recommendations

    Originally posted by ecniv
    Originally posted by dieselgeek
    also testing out a new plug & play harness for LS1 engines. MS has a lot of new stuff coming soon,

    -scott
    How 'bout something for us LT1 guys? I'd love to run MS on my Camaro, just too lazy to build a harness...
    Your problem is that freaking Optispark. It's got a low res, 4-cyl signal, which we can't use, and a high-res signal we also can't use (360 teeth).

    However, there are places now making bolt on EDIS wheel adapters for the crank balancer/pulley/whatever. Mount a CKP sensor, I prefer the GM LS1 crank pos sensor, then you can run wasted spark coilpacks. The harness isn't that big of a deal, just use your stock one but make sure you understand how it works.

    Leave a comment:


  • ecniv
    replied
    Re: Megasquirt project recommendations

    Originally posted by dieselgeek
    also testing out a new plug & play harness for LS1 engines. MS has a lot of new stuff coming soon,

    -scott
    How 'bout something for us LT1 guys? I'd love to run MS on my Camaro, just too lazy to build a harness...

    Leave a comment:


  • dieselgeek
    replied
    Re: Megasquirt project recommendations

    Originally posted by wikd69
    Just downloaded and browsed the C source code. Been awhile since I did any real C development. Used to write a lot of serial datacomm stuff, way back when, serial packet protocol design, process control and the like. It'd be very interesting to see a high level flow and logic design on this stuff. I understand that besides mass air flow, oxygen sensors in the exhaust help keep air/fuel mix in range. Outside of tach input, what other sensor input does the unit monitor or rely on ?

    And, how sophisticated is MS, in regards to tweaking power / torque curves at different RPM bands, etc. ? Not that I know a lot about it, but it'd be interesting to have that degree of control over performance.
    You probably won't need to rewrite any code, but lots of guys do!

    MS is sophisticated enough to make any combo I've ever seen, run like an OEM EFI car...

    Think of it this way, you're not really tweaking power/torque. You're adjusting timing and AFR at all different load points the engine will see in regular operation, and if you're really fine tuning it, you put it on a chassis or engine dyno you will try different AFRs and timing figures at those load points, to find out which ones the engine likes best... the power & torque curves/values are more a function of the hard parts in the engine (cam, intake, heads, exhaust, compression, etc.) the EFI just makes it so that you can home in on those peak values as quicklyt as possibly. Of course the tradeoff is complexity in setup, but once it's installed and debugged, EFI is the best tool for quickly optimizing AFR and timing.

    Leave a comment:

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