Game over for AEM EMS?
They make evo ix pnp units too. if you want to retain all stock ecu functions, with either the pnp or gold box the i/o limitations are about the same. the gold box may have a few more spares, but it is close. the difference in price is more than $1000+ dollars in addition to countless hours of wiring time, and creating the base settings which will aren't normally provided when you buy a gold box.
Originally Posted by pengulns2001
if you read my post i only pan on using the stock ecu long enough to get the motec M800 sorted out, thanks for the information about the injectors though thats a big help. i will also hope to be proving the power/drivability difference between a motec and the stock ecu at that level.
the reason for the 1600cc injectors is i have a thing for experimenting with alternative fuels specifically methonal. i did it on my last car and i plan to do the same with this one, although i will never regularly run the car on methonal i will take it to the track at least once with pure methonal in the tank. i really have no reason to do this as im sure someone will point out but i just like to show that its possible... and i already have the injectors so why waste money on smaller ones when these work just fine. another great thing about large injectors (although it hardly applys) you can have a much shorter injector open time and get more fuel going through the open intake valve instead of spraying on closed valves. this increases fuel economy and power its something we do for FSAE's endurance races since fuel economy is a scored event and with the restrictor every % of effeciancy makes a big difference. but like i said hardly applicable
the reason for the 1600cc injectors is i have a thing for experimenting with alternative fuels specifically methonal. i did it on my last car and i plan to do the same with this one, although i will never regularly run the car on methonal i will take it to the track at least once with pure methonal in the tank. i really have no reason to do this as im sure someone will point out but i just like to show that its possible... and i already have the injectors so why waste money on smaller ones when these work just fine. another great thing about large injectors (although it hardly applys) you can have a much shorter injector open time and get more fuel going through the open intake valve instead of spraying on closed valves. this increases fuel economy and power its something we do for FSAE's endurance races since fuel economy is a scored event and with the restrictor every % of effeciancy makes a big difference. but like i said hardly applicable
Doesn't the AEM EMS require larger injectors then the Stock ECU due to how both units control the injectors? Also does the AEM EMS require an ignition AMP because it also alters the ignition?
Originally Posted by High_PSI
Doesn't the AEM EMS require larger injectors then the Stock ECU due to how both units control the injectors? Also does the AEM EMS require an ignition AMP because it also alters the ignition?
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Joined: Sep 2005
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From: MI/NJ
talked to chris at motec, he reccomended using the gold box M800 because the pnp units dont have the same capabilities for expansion in the future. the wiring really isnt that big a deal since you can just take all the wires strait from the factory connector... or maybe even have boomslang make me a sweet adapter so i can always go back to the factory ecu
unfortunately, in my experience you cannot take all the wires straight from the factory connector. your results might be different, but it has to do with the voltages required to trigger the crank and cam sensors.
Originally, I had the same idea as you to wire a gold box (out of my racecar) into my dd EVO, but after the many hours spent building this harness, and the future hours required to build a configuration file for an EVO, it was more cost effective for me personally to buy a PNP. It turned out to require a lot of work still, but the UKDM basemap gave me lots of hints as to which direction to go that would otherwise be extremely difficult to figure out.
Originally, I had the same idea as you to wire a gold box (out of my racecar) into my dd EVO, but after the many hours spent building this harness, and the future hours required to build a configuration file for an EVO, it was more cost effective for me personally to buy a PNP. It turned out to require a lot of work still, but the UKDM basemap gave me lots of hints as to which direction to go that would otherwise be extremely difficult to figure out.
Newbie
Joined: Sep 2005
Posts: 49
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From: MI/NJ
fourtunatly the newer versions of the motec software allow you to use any cam/crank signal as long as you set it up correctly. the crank/cam signals are not as much of a pain in the *** as they used to be.
The problem with the gold box and building a jumper harness is that the sync and ref have dedicated 8 volt power supplies and expects an 8 volt signal on hall effect sensors.
The stock system is a 5 volt. So there is really no way you can purely run off the stock terminals as there is no 8 volt supply on the stock system. AFAIK, you cannot reconfigure the Motec gold box to trigger off a 5 volt supply.
You can wire the 8 volt trigger system directly to the hall effect sensors itself, so essentially you will have two subharness that run to the engine bay in addition to the patch harness. But to do so would require tampering with the stock underhood engine harness, and me personally, I am extremely **** about my wiring, and to do so correctly would be very laborous, using milspec connections and crimps.
Hence why I bought a PNP that avoids this all.
The stock system is a 5 volt. So there is really no way you can purely run off the stock terminals as there is no 8 volt supply on the stock system. AFAIK, you cannot reconfigure the Motec gold box to trigger off a 5 volt supply.
You can wire the 8 volt trigger system directly to the hall effect sensors itself, so essentially you will have two subharness that run to the engine bay in addition to the patch harness. But to do so would require tampering with the stock underhood engine harness, and me personally, I am extremely **** about my wiring, and to do so correctly would be very laborous, using milspec connections and crimps.
Hence why I bought a PNP that avoids this all.
AFAIK, setting it to a low level like .2 is for magnetic reluctor analog type triggers.
The mitsubishi system is an optical hall effect digital triggering system. The sensor level is not adjustable.
Open up the m800 software and you can see for yourself.
The ref/sync mode is 16
If I'm wrong that would be great, as I would love to run my gold box with a jumper harness on my EVO9... But I have been tuning m800's since before the windows version came out, so I am pretty familiar with it.
Additionally on the EVO9 and the gold box, you will need to figure out the PID parameters for controlling the MIVEC, as well as the crip for the intake cam, which gives the position of the camshaft phasing.
I have figure this out on the Honda K-series engine, and it is a task in itself.
The PNP EVO9 comes with variable cam timing enabled, where as the gold box is another option $600+ US.
The mitsubishi system is an optical hall effect digital triggering system. The sensor level is not adjustable.
Open up the m800 software and you can see for yourself.
The ref/sync mode is 16
If I'm wrong that would be great, as I would love to run my gold box with a jumper harness on my EVO9... But I have been tuning m800's since before the windows version came out, so I am pretty familiar with it.
Additionally on the EVO9 and the gold box, you will need to figure out the PID parameters for controlling the MIVEC, as well as the crip for the intake cam, which gives the position of the camshaft phasing.
I have figure this out on the Honda K-series engine, and it is a task in itself.
The PNP EVO9 comes with variable cam timing enabled, where as the gold box is another option $600+ US.
Last edited by EFIxMR; Aug 14, 2006 at 07:27 PM.
