Wez Posted September 4, 2006 Share Posted September 4, 2006 Hey All, Quick question for people running Motecs and autos, how does the Motec control the autobox or is the stock auto control left in place? If its left in place how is the motec wired up and what is the motec actually controlling, just fuel and ign? Thanks Link to comment Share on other sites More sharing options...
Gamer Posted September 4, 2006 Share Posted September 4, 2006 On mine the stock auto control takes care of the box. The Motec is spliced into the stock loom I assume and it is controlling the fuel and ign. I can take a picture of the Motec install if and when I get a chance if you like. Keep in mind that my response is a mix of information that I have been told and an educated guess by myself. It would be best for you to call Mark @ Owen Developments for complete clarification on this as they did the install. Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 4, 2006 Share Posted September 4, 2006 The stock ecu controls the gearbox, the Motec does fuel and ignition and whatever other functions you choose to allocate and for which it has enough suitable outputs / inputs. It's probably possible to get an M800 to control the auto box, too, but it would be very time consuming and expensive to do the first such install and mapping. Link to comment Share on other sites More sharing options...
Pete Posted September 4, 2006 Share Posted September 4, 2006 Oh - I didn't realise that was possible and had given up all hope of owning a Motec on this basis. How's the VVTi Motec man coming along Chris? Link to comment Share on other sites More sharing options...
Wez Posted September 4, 2006 Author Share Posted September 4, 2006 OK my next question is if the motec can be setup this way to protect the autobox surely the AEM can as well. Just wondering as AEM and auto do not have a great history. Link to comment Share on other sites More sharing options...
Gamer Posted September 4, 2006 Share Posted September 4, 2006 OK my next question is if the motec can be setup this way to protect the autobox surely the AEM can as well. Just wondering as AEM and auto do not have a great history. To that I would say... It sounds so simple that it would have been done if it could have been. I suspect that there was a limiting factor and a difference in how the AEM and Motec are designed to run. Or at least with regards to accepting a piggyback control function. Link to comment Share on other sites More sharing options...
Wez Posted September 4, 2006 Author Share Posted September 4, 2006 I dont think it has been tried with an AEM. From what i have read the main issue is the first to second shift putting too much torque through the box. Link to comment Share on other sites More sharing options...
Gamer Posted September 4, 2006 Share Posted September 4, 2006 Sorry, I mis-read your question. I thought you meant why can't the AEM let the stock ECU control the autobox functions. Back on track now. What do you mean by the Motec protecting the box ? Link to comment Share on other sites More sharing options...
Wez Posted September 4, 2006 Author Share Posted September 4, 2006 That is my question If the motec leaves autobox control down to the stock unit, why cant the AEM be setup the same way as people are worried about it blowing boxes up. Link to comment Share on other sites More sharing options...
Wez Posted September 4, 2006 Author Share Posted September 4, 2006 When i say protect the box, i mean its not controlling it, the stock unit is. Link to comment Share on other sites More sharing options...
Miguel Posted September 4, 2006 Share Posted September 4, 2006 That is my question If the motec leaves autobox control down to the stock unit, why cant the AEM be setup the same way as people are worried about it blowing boxes up. It can. AEM can be bought as a generic ECU with a full loom, so it can be fitted to any car , Just like the motec. It can be "piggybacked", Just no one as far as I know has done it because it sorta defeats the Plug and play option . Might also be worth asking around on the auto issues as I'm lead to belive it's not a problem anymore. http://www.aempower.com/ViewCategory.aspx?CategoryID=63 Link to comment Share on other sites More sharing options...
Wez Posted September 4, 2006 Author Share Posted September 4, 2006 I didnt think it was an issue either as they introduced a shift retard option, but one mapper i know said its not used as it doesnt feel right when working. Are there any UK based cars running AEM with autos and no issues? Link to comment Share on other sites More sharing options...
Dragonball Posted September 4, 2006 Share Posted September 4, 2006 Unfortunately the auto issue does not seem to have been catagorically overcome... There are instructions on the AEM forum on how to undertake / programme the change / timing retardation - but this does not seem to have overcome the almost 'random' nature of some boxes going and others working... This might have promise if it could be made to work... Link to comment Share on other sites More sharing options...
sdavies Posted September 4, 2006 Share Posted September 4, 2006 God help me... I should be going the AEM Plug and Pray route for my auto after she has undergone her overhaul... I expect the time frame of my work is going to far exceed the time requirements for a sensible response in this case - with that mind though, I too would be interested in any answers to this thread. Link to comment Share on other sites More sharing options...
Wez Posted September 4, 2006 Author Share Posted September 4, 2006 I agree with Paul on this, some people claim to be running 700hp through the autobox without issue and others are breaking them on much much less. This again could be down purely to setup/config. Link to comment Share on other sites More sharing options...
Dragonball Posted September 4, 2006 Share Posted September 4, 2006 Spoken with a well known AEM tuner who feels that this is very possible (as with the Autronic and Motec) Potentially would just Require a double loom connector and the unit to be spliced in...with the stock ECU looking after the rest Anymore input welcome.... Link to comment Share on other sites More sharing options...
Miguel Posted September 4, 2006 Share Posted September 4, 2006 TBH I agree with Wez. AEM is too easy a tool for amature mappers to get hold of and have a go, so it's inevetable that some bad results will come to light. Not saying that the AEM doesn't have any problems , it may well have, It's just I Heard through the grapevine that it's less of an issue than it was at the begining. I have also heard of random box failure with other ECM's on the auto and also success stories too. What would be nice, so this question stops coming up on a monthly basis, Is to get a Fully qualified AEM mapper, one that works AEM everyday to give his input and put this puppy to bed But I fear there isn't too many UK mappers qualified to give this input. Link to comment Share on other sites More sharing options...
Dragonball Posted September 4, 2006 Share Posted September 4, 2006 Who should we canvas IYHO Mig? Link to comment Share on other sites More sharing options...
Wez Posted September 4, 2006 Author Share Posted September 4, 2006 Well since the AEM is basically a Gems unit there are surely Gems mappers in the UK. Link to comment Share on other sites More sharing options...
Miguel Posted September 4, 2006 Share Posted September 4, 2006 Well since the AEM is basically a Gems unit there are surely Gems mappers in the UK. You would think so. How many are Savvy in the Supra auto department I would say GEMS unit that has had a bit more fruit and veg added to it by AEM would be more PC. Link to comment Share on other sites More sharing options...
Wez Posted September 4, 2006 Author Share Posted September 4, 2006 You would think so. How many are Savvy in the Supra auto department I have to admit that is a very valid point Link to comment Share on other sites More sharing options...
JohnK Posted September 4, 2006 Share Posted September 4, 2006 I expect the time frame of my work is going to far exceed the time requirements for a sensible response in this case Dont bet on it, this has been rumbling on for years. Link to comment Share on other sites More sharing options...
Wez Posted September 4, 2006 Author Share Posted September 4, 2006 So basically what we are saying is yes we could use an AEM to control all other aspects and use the stock unit for autobox control until the autobox control within the AEM is proven. I guess the easiest way to wire this would be with a fields harness. Link to comment Share on other sites More sharing options...
Dragonball Posted September 4, 2006 Share Posted September 4, 2006 Dont bet on it, this has been rumbling on for years. Err.. no I dont think so m8. This, and I may be wrong, is a new slant on the AEM question - in as much I cannot remember anyone mooting this as a 'piggyback' in this respect (as opposed to a standalone EMS) If this is possible then in my book I would be much happier to look at this system again - whereas previously I had discounted it for the auto... Link to comment Share on other sites More sharing options...
JohnK Posted September 4, 2006 Share Posted September 4, 2006 I was refering to the AEM's own control of the autobox Link to comment Share on other sites More sharing options...
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