EPM and V1 compatible? | AEM
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enraged
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EPM and V1 compatible?

I've got an 88 Supra with a 7M-GTE running on a AEM PnP V1 standalone. I've always had issues with the stock CPS on the motor, but now I see that AEM is offering a universal version of the EPM.

Will the EPM work with my V1? Looking through the manual for the EPM it looks like it may work, as it has a 4 wire connector just like the 7M plug, and it outputs a CRANK, and a CAM signal. Will the AEM V1 interpret the signal?
 
I'm looking at this EPM unit because I would rather not pull the car apart to install a crank trigger, or have to modify the cam gears for a magnetic pickup.
AEM_NS
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I dug through the archives

I dug through the archives and found the 1110 schematic.  Unfortunately the crank input has been configured to only accept a VR signal (pull down resistor in place).  For whatever reason, when the 1110 was first engineered, the crank input was NOT given a configurable jumper to allow change between either a pull up or pull down resistor.  Interestingly enough, the cam and other speed inputs do have jumpers.    

Technically, you could go in and find the physical pull down resistor and remove it from the PCB.  Luckily the EPM outputs a square wave so a pull up isn't needed.  If you're not 100% comfortable with doing work of this level then I suggest not doing it.  You could actually try running the EPM with the pull down in place but there's a chance that it'll pull the signal down too much which wouldn't be good.  

Hope this helps.

enraged
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Is the resistor something

Is the resistor something that could be done by AEM if I were to send the unit in?

AEM_NS
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I was thinking that we wouldn

I was thinking that we wouldn't but I checked and apparently we can actually.  The charge is $125 + shipping.  Contact tech support if you're interested.  

Be forewarned though - once the mod is done, you'd have to pay the same charge again to revert it back.  Additionally, all service and support for the Series 1 ends at the end of the year.  

enraged
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Thanks for the help. Can you

Thanks for the help. Can you tell me the number of the resistor that has to be removed? I've searched around and can't find a reference for the 30-1110 EMS.

AEM_NS
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I double checked the

I double checked the schematic and the 1110 has a unique filter circuit on the crank input so it's a little more involve than just taking off a resistor.  You'd need to remove R60 and R61 and replace C1 with a shunt.

Be advised that AEM in no way suggests that you attempt to modify your EMS and you should only do so if you're absolutely 100% confident with electronics mod/repair work.  As such, AEM is not responsible for any damage that may occur should you decide to alter your EMS.  Just sayin'.