Graham Can we have a Megasquirt update
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  1. #1
    Fellow Frogger! jarrods's Avatar
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    Default Graham Can we have a Megasquirt update

    Just wondering how you were going with the megasquirt.

    Jarrod

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    Quote Originally Posted by jarrods
    Just wondering how you were going with the megasquirt.

    Jarrod
    I have built the unit and tested it with the simulator that I built up from parts obtained from Jaycar ($40).
    I am at present fitting the sensors to the engine ( obtained from Commodore, Daihatsu etc) and this afternoon hope to have the engine and box in the car. It should be going by early next week and I'll bring it to Morwell. Received your entry by the way.
    If all goes well I will be fitting one to the 205 GTI, not sure what engine yet, though.
    Do you have an engine mount for STI/GTI, the one from the rubber mount to the cross member? I'm also after an electronic ignition module.
    Graham

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    Fellow Frogger! Janek's Avatar
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    graham, whats the deal with this megasquirt deal... ive heard a lot of rant, but no facts, no one thats used them, no one that really knows anything... is it something i should be concerning myself with? i have the ovlov 760 motor, mpfi, and plan to upgrade it eventually... something i need to be looking into?

    thanks, Janek

    p.s. i will start a thread about this megasquirt stuff... megasquirt: NFI?

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    Quote Originally Posted by Janek
    graham, whats the deal with this megasquirt deal... ive heard a lot of rant, but no facts, no one thats used them, no one that really knows anything... is it something i should be concerning myself with? i have the ovlov 760 motor, mpfi, and plan to upgrade it eventually... something i need to be looking into?

    thanks, Janek

    p.s. i will start a thread about this megasquirt stuff... megasquirt: NFI?
    If you go to the megasquirt website (google megasquirt) all will be revealed.
    Basically though, it comes a box of parts which you assemble yourself into an ECU. You need to have electronics experience (in particular, soldering of small components onto PC boards) to do this. It cost me $200 Aus landed.
    The CPU is preloaded with the operating software and you down load the communication software for the lap top from the website.
    There is heaps of info on the web site and even a forum where users discuss successes, problems etc.
    I'm prepared to build and test ECUs for people, this will add significantly to the cost but it still works out very cheap compared to Haltech etc.
    On of the attractions is that it is fuel only (although add on ignition systems are available) and is triggered by the ignition cicuit, making it very easy to set up. In other words ideal for people wishing to upgrade their carby, K,L Jetronic or Kugelfischer fuel systems.

    Graham

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    Fellow Frogger! jarrods's Avatar
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    Quote Originally Posted by GRAHAM WALLIS
    I have built the unit and tested it with the simulator that I built up from parts obtained from Jaycar ($40).
    I am at present fitting the sensors to the engine ( obtained from Commodore, Daihatsu etc) and this afternoon hope to have the engine and box in the car. It should be going by early next week and I'll bring it to Morwell. Received your entry by the way.
    If all goes well I will be fitting one to the 205 GTI, not sure what engine yet, though.
    Do you have an engine mount for STI/GTI, the one from the rubber mount to the cross member? I'm also after an electronic ignition module.
    Graham
    Graham

    I should have both of those items but they go with the motor I have for sale. I dont have the wiring loom at the momemt but I may be able to get that back if you need it. If you want you can borrow them and replace them when you can. Let me know. I can bring them to the meeting on Friday if you want. Do you need both engine mounts?

    Jarrod

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    Quote Originally Posted by jarrods
    Graham

    I should have both of those items but they go with the motor I have for sale. I dont have the wiring loom at the momemt but I may be able to get that back if you need it. If you want you can borrow them and replace them when you can. Let me know. I can bring them to the meeting on Friday if you want. Do you need both engine mounts?

    Jarrod
    Thanks for that Jarrod. I don't need the loom but would like to borrow the module, mount and just to be sure, the coil just in case my SR one isn't compatable.
    It is the passenger side mount from cross member to rubber mount that I need.
    Graham

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    Fellow Frogger! Janek's Avatar
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    sounds fine to me... i have a fair bit of experience repairing blown computer motherboards and the like, so soldering teeny bits and pieces is not an issue... sounds liek fun... you think its a worthy upgrade?

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    Quote Originally Posted by Janek
    sounds fine to me... i have a fair bit of experience repairing blown computer motherboards and the like, so soldering teeny bits and pieces is not an issue... sounds liek fun... you think its a worthy upgrade?
    Have a look at the Megasquirt website, plenty of people seem to be replacing K Jetronic sysytems
    I'll let you know how mine goes next week.
    Graham

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    1000+ Posts Pugnut403's Avatar
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    Doesn't it squirt all the injectors at once though? Sounds a little inneficient to me if it does.
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    Quote Originally Posted by Pugnut403
    Doesn't it squirt all the injectors at once though? Sounds a little inneficient to me if it does.
    Yes, but quite common. Only the more sophisticated systems use sequential injection.
    The Megasquirt fires two injectors at a time.
    Graham

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    Quote Originally Posted by jarrods
    Just wondering how you were going with the megasquirt.

    Jarrod

    It goes!
    I went out and bought some Aerostart after no success at first, still nothing so I checked the spark and then found out the rotor button had been pinched.
    Runs fine, which is a relief after the motor had been sitting for quite a while.
    I'll have it at Morwell on Sunday.
    No doubt I will spending a fair amount of time with the laptop tuning before then.
    Graham

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    Fellow Frogger! crosspug's Avatar
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    what can I say??




    Good to here it works.

    Jono
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    Fellow Frogger! Janek's Avatar
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    graham, where did you get the software you need to tune the ecu via laptop? a part of the megasquirt bundle?

    P.S. congrats, glad to see it all works!

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    Quote Originally Posted by Janek
    graham, where did you get the software you need to tune the ecu via laptop? a part of the megasquirt bundle?

    P.S. congrats, glad to see it all works!

    You down load it from the megasquirt website.
    I have got it running well at idle and it revs out OK when you open the throttle. I just need to reassemble the gearchange and fit the bonnet then I will be able to take it for a drive.

    Graham

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    Fellow Frogger! MondeoST24's Avatar
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    For anyone who's interested do a search for UltraMegasquirt too. That's the new soon to be released version with built in ignition timing control.

    Something else for people interested in that sort of thing- a Aussie made standalone programmable ignition system : http://www.delta-digital.com.au/ (click on the Deltamax)
    David
    Former 306 S16 owner- now own a Mondeo ST24 V6

  16. #16
    1000+ Posts Pugnut403's Avatar
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    What's the advantage of Megasquirt over an ordinary ECU?
    Pugs Rule!

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  17. #17
    Fellow Frogger! crosspug's Avatar
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    Quote Originally Posted by Pugnut403
    What's the advantage of Megasquirt over an ordinary ECU?
    Ordinary as in standard?? Megasquirt is a programmable ecu (Fuel only). Although it was mentioned above that there is an Fuel+ignition one as well. While the standard Maps of an ecu (that comes with the car) cannot be changed (or very little if at all). The megasquirt can map the A/F ratios via laptop.

    Like a not so expensive Wolf2D fuel only ecu. Although heading towards the Haltech's etc when it gets ignition capability.

    Jono
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    Quote Originally Posted by crosspug
    Ordinary as in standard?? Megasquirt is a programmable ecu (Fuel only). Although it was mentioned above that there is an Fuel+ignition one as well. While the standard Maps of an ecu (that comes with the car) cannot be changed (or very little if at all). The megasquirt can map the A/F ratios via laptop.

    Like a not so expensive Wolf2D fuel only ecu. Although heading towards the Haltech's etc when it gets ignition capability.

    Jono
    It has very good tuning software and I managed to get it very close after an hour or two of driving around. This has got to save money in dyno time.
    The system has been designed with economy and amateurs in mind and there is an on line forum where issues can be discussed.
    Graham

  19. #19
    1000+ Posts HONG KONG PUGGY's Avatar
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    Quote Originally Posted by GRAHAM WALLIS
    It has very good tuning software and I managed to get it very close after an hour or two of driving around. This has got to save money in dyno time.
    The system has been designed with economy and amateurs in mind and there is an on line forum where issues can be discussed.
    Graham
    Congratulaitons on the MS success. I have had a serious look at megasquirt and the combined megasquirt/megaspark systems and I was seriously considering installing one on the 505 wagon (with the 4 port head engine) when I rebuild it later this year. Sounds like a success so far, I'll keep my eye on this spot for updates.
    What injection system did you decide on? Pugrambos suggestion of the falcon twin t/b sounded good on the weber manifold. I'd suggest it would be very good on the 4 branch one I have.
    Chris L.

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    Quote Originally Posted by HONG KONG PUGGY
    Congratulaitons on the MS success. I have had a serious look at megasquirt and the combined megasquirt/megaspark systems and I was seriously considering installing one on the 505 wagon (with the 4 port head engine) when I rebuild it later this year. Sounds like a success so far, I'll keep my eye on this spot for updates.
    What injection system did you decide on? Pugrambos suggestion of the falcon twin t/b sounded good on the weber manifold. I'd suggest it would be very good on the 4 branch one I have.
    Chris L.
    I fitted it to a 505 GTI motor so the manifold and injector rail was already done.
    It goes better than any GTI I've driven before, hitting 7000 and then valve bounce very quickly. You're very lucky to see 6000 in the STI and while the GTI may get to 7000 eventually I doubt that you'd reach the valve bounce point.
    Why not use an SLI manifold, multi point has to be better, although I can see the rational if you don't have a 4 port head.

    Graham

  21. #21
    1000+ Posts HONG KONG PUGGY's Avatar
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    Quote Originally Posted by GRAHAM WALLIS
    I fitted it to a 505 GTI motor so the manifold and injector rail was already done.
    It goes better than any GTI I've driven before, hitting 7000 and then valve bounce very quickly. You're very lucky to see 6000 in the STI and while the GTI may get to 7000 eventually I doubt that you'd reach the valve bounce point.
    Why not use an SLI manifold, multi point has to be better, although I can see the rational if you don't have a 4 port head.

    Graham
    I must get me one of those SLI manifolds if I definatly decide to go the megasquirt route. Yes I do have the 4 port head, and as was pointed out to me I'll have to investigate as to whether it has the provisions for the mech injection blocked off.

  22. #22
    Guru davemcbean's Avatar
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    Quote Originally Posted by HONG KONG PUGGY
    suggestion of the falcon twin t/b sounded good on the weber manifold.
    I checked out a Falcon throttle body for myself the other day and it turns out the stud pattern is slightly larger (approx 100x56mm as opposed to approx 95x48mm for the Weber).

    Dave
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  23. #23
    1000+ Posts HONG KONG PUGGY's Avatar
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    Quote Originally Posted by davemcbean
    I checked out a Falcon throttle body for myself the other day and it turns out the stud pattern is slightly larger (approx 100x56mm as opposed to approx 95x48mm for the Weber).

    Dave
    Oh well will have to go with the SLI fuel rail then. Should be able to aquire one when I need it.

  24. #24
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    Quote Originally Posted by HONG KONG PUGGY
    Oh well will have to go with the SLI fuel rail then. Should be able to aquire one when I need it.
    The SLI doesn't have a fuel rail being K Jetronic. Best to use Nissan Injectors which can be mounted without a rail and then run rubber hose.
    Graham

  25. #25
    1000+ Posts HONG KONG PUGGY's Avatar
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    Quote Originally Posted by GRAHAM WALLIS
    The SLI doesn't have a fuel rail being K Jetronic. Best to use Nissan Injectors which can be mounted without a rail and then run rubber hose.
    Graham
    Oh oK, the SLI manifold was what I need then, and the Nisan Injectors. I feel a little more research is required!
    Chris.

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