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MoTeC MDC Diff Controllers - Who's Running One?

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Old Oct 10, 2019 | 10:48 AM
  #31  
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Check out the HPA videos (high performance academy) on wiring.

So whats the difference between the m130 and the other 3?
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Old Oct 10, 2019 | 12:23 PM
  #32  
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Originally Posted by Balrok
Check out the HPA videos (high performance academy) on wiring.

So whats the difference between the m130 and the other 3?
https://www.hpacademy.com/courses/pr...on-club-level/

this is what i found - may not be a bad option for me to see once fall quarter ends
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Old Oct 10, 2019 | 03:56 PM
  #33  
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I’ve got one of the acd-tuning flashes from Matt from years back. Really transformed the cars behavior. Lighter steering feel, better handling and offered power oversteer. He studied what the factory setup and tuned it with good results.

When I went to the MoTec m130 I spoke to John about acd tuning since it’s included ( some wiring required ) in the package . I decided to not to mess with it. As much as I like tuning the engine side of things I didn’t want to open another can of worms with the ACD . It’s easy to run the car on the Dyno and see the effects of tuning. It’s another to try and dial something in on the street since I’m not a big track junkie. If I was hardcore and tracked often I might tinker with it.
I also feel that since we don’t have an ayc diff that the acd can only do so much.

MoTec has been around since the 90's and continues to set the bar on Aftermarket Ecu's. Its extremely powerful and stable.

Last edited by Abacus; Oct 10, 2019 at 04:03 PM.
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Old Oct 10, 2019 | 04:22 PM
  #34  
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Originally Posted by Abacus
I’ve got one of the acd-tuning flashes from Matt from years back. Really transformed the cars behavior. Lighter steering feel, better handling and offered power oversteer. He studied what the factory setup and tuned it with good results.

When I went to the MoTec m130 I spoke to John about acd tuning since it’s included ( some wiring required ) in the package . I decided to not to mess with it. As much as I like tuning the engine side of things I didn’t want to open another can of worms with the ACD . It’s easy to run the car on the Dyno and see the effects of tuning. It’s another to try and dial something in on the street since I’m not a big track junkie. If I was hardcore and tracked often I might tinker with it.
I also feel that since we don’t have an ayc diff that the acd can only do so much.

MoTec has been around since the 90's and continues to set the bar on Aftermarket Ecu's. Its extremely powerful and stable.
So was it anything extra to get the ACD control beyond some wiring work?

Could you potentially speak to what the John Reed package gets you rather than just ordering your own and making a harness? I thought there was some special deal he had with Motec that got the faster logging rates and maybe other stuff but it was locked to one car. You could later pay to unlock the ECU if you wanted to change it to like a bmw or something.
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Old Oct 10, 2019 | 05:05 PM
  #35  
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Originally Posted by Dallas J
So was it anything extra to get the ACD control beyond some wiring work?

Could you potentially speak to what the John Reed package gets you rather than just ordering your own and making a harness? I thought there was some special deal he had with Motec that got the faster logging rates and maybe other stuff but it was locked to one car. You could later pay to unlock the ECU if you wanted to change it to like a bmw or something.
The MoTeC ECUs can be purchased without firmware at a lower price. MoTeC has two firmware levels: GPA and GPR, where GPR has more features. JRR's firmware is based on the more expensive GPR firmware, but it's cheaper because he's locked it to the 4G63 trigger wheel pattern so it can't be used in generic applications. Doesn't make much sense, IMO, but it seems like the best deal.

The JRR firmware also includes customizations that aren't available in the off the shelf GPA or GPR firmware. Check out the full list on his web page: https://johnreedracing.com/collectio...e-jrr-evo-4g63

I haven't used it myself, but he seems to know what he's doing. If a complete MoTeC setup wasn't so expensive I'd love to run it.
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Old Oct 11, 2019 | 12:06 AM
  #36  
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Originally Posted by Dallas J
So was it anything extra to get the ACD control beyond some wiring work?

Could you potentially speak to what the John Reed package gets you rather than just ordering your own and making a harness? I thought there was some special deal he had with Motec that got the faster logging rates and maybe other stuff but it was locked to one car. You could later pay to unlock the ECU if you wanted to change it to like a bmw or something.
You do not have to change the factory wiring, you can instead make a bench loom for flashing the acd ecu... however you need to unplug it from the car then... and if you make lots of changes it is tiresome..

this is the diagram but you doo need a 2.0 openport cable.. Definitions you can find on this site or I can send you some but mine are old..

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Old Oct 11, 2019 | 12:07 AM
  #37  
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Originally Posted by Construct
The MoTeC ECUs can be purchased without firmware at a lower price. MoTeC has two firmware levels: GPA and GPR, where GPR has more features. JRR's firmware is based on the more expensive GPR firmware, but it's cheaper because he's locked it to the 4G63 trigger wheel pattern so it can't be used in generic applications. Doesn't make much sense, IMO, but it seems like the best deal.
if you are upgrading to a expensive ecu then it might be of some benefit to fit a more precise trigger wheel...
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Old Oct 11, 2019 | 08:03 AM
  #38  
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Originally Posted by kikiturbo
You do not have to change the factory wiring, you can instead make a bench loom for flashing the acd ecu... however you need to unplug it from the car then... and if you make lots of changes it is tiresome..

this is the diagram but you doo need a 2.0 openport cable.. Definitions you can find on this site or I can send you some but mine are old..
My car is wired up to in-car flash the ACD so no problem there. Plus its more convenient to change map to map at the track when trying new things.

So from the latest info Rob-80e is doing on ACD definitions, he says the B and C map are pretty much backwards from what Merlin had originally wrote. Seems he's doing a pretty thorough dive and putting out some very good information. His XML he's keeping to himself but I'll just change my Merlin modded XML to match the definitions Rob has given us.

I really like the idea of getting the Motec M130 in the car but If I can feel good about the mods to OEM ACD computer then Im going to stick with my plan of AEM.
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Old Oct 11, 2019 | 09:19 AM
  #39  
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Originally Posted by Dallas J
My car is wired up to in-car flash the ACD so no problem there. Plus its more convenient to change map to map at the track when trying new things.

So from the latest info Rob-80e is doing on ACD definitions, he says the B and C map are pretty much backwards from what Merlin had originally wrote. Seems he's doing a pretty thorough dive and putting out some very good information. His XML he's keeping to himself but I'll just change my Merlin modded XML to match the definitions Rob has given us.

I really like the idea of getting the Motec M130 in the car but If I can feel good about the mods to OEM ACD computer then Im going to stick with my plan of AEM.
You've got some great resources out west (John reed and English Racing ) That know Motec and Aem well. The Motec isn't as expensive as it once was and it delivers. Everytime. It looks like you're going to race and own your car for awhile so the cost difference isn't much to be concerned over.

I would change the Trigger wheel to have more clarity and softer ignition cut.

The Motec is more challenging to tune but a Pro already has a basemap and will work thru it.

The infinity is user friendly .
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Old Oct 11, 2019 | 09:33 AM
  #40  
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I hadnt thought of that, but soft ignition cut would be pretty awesome actually. The OEM ignition cut is super harsh for AX to the point I gear my car pretty tall just to avoid hitting that limiter. My 2.3 and 4.53 setup ripped 2nd gear in the 1.05g accel range but topped out at 65mph. I drove one year where there wasnt a course made I couldnt hit rev limiter on, and people tried to slow me. The 4.11s and 2.2l Im at 75mph in 2nd and just about never hit that with only 0.85g accel (taller/heavier wheels tires and less torque seems to have an effect too on accel numbers).

So If I could get a softer limiter from different crank trigger, that makes a difference in what direction I go.
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Old Oct 11, 2019 | 12:31 PM
  #41  
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Some Motec Goodness on a rally car. I believe its a big turbo FA20 rally car with Fresh air style Antilag valve and DBW.

https://gyazo.com/49c462d9050bef6f835e64bef7c69e51

https://www.turbosmart.com/product/g...nti-lag-valve/

Sidenote the JRR package does have rally antilag if you set it up with a DBW TB. I've used it and it works but overkill for what I do.

Also, if you go with the AEM make sure you've got a large battery for those cold starts out west. Some Ecu's get pretty unhappy with low voltage.

Last edited by Abacus; Oct 11, 2019 at 01:03 PM.
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Old Oct 19, 2019 | 04:37 AM
  #42  
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So whos got some maps to share?!
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