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Thread: My Accord build carputer communicating with ecu REAL TIME TUNING

  1. #71
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    lowered and blacked out always looks nice great job

  2. #72
    Constant Bitrate AutoWiz's Avatar
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    here is underneath the rear. flashy new lower control arms, tie bar, and shocks/springs
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  3. #73
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    nice build how do you like the ems-4 for every day driving

  4. #74
    Constant Bitrate AutoWiz's Avatar
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    I have nothing but good things to say about the ems-4. it is incredible. I regret picking a rare engine never sold in the u.s. while it seemed like a good idea at the time, aside from not being able to find a simple timing belt there are also no specs to be had for my engine. I can't find an ignition map and building one from scratch has proven to be a tedious time consuming job. but for fuel map, there is supporting program you can run, autotune, and it uses the wideband o2 feedback and builds your fuel map as you drive. and I gotta say that is a pretty cool feature. it just totally bypasses logging data, filling histogram data, copy n pasting, flashing, and logging more data. I finally got an aem 4 channel wideband controller(http://www.aemelectronics.com/wideba...controller-60/) and am about to mount 4 o2 bungs in my header and setup individual cylinder fuel trims, but upon consultation with aem, I am told that no aem products support 4 channels of o2 feedback. I can only log and make changes to individual injectors which comes as a letdown for me. but it has proven to be very reliable. it is my daily driver. and with carpc and aemtuner set to load at windows startup, fine tuning has really been a breeze. at every stoplight or stop sign I can adjust idle charastics, i can have a friend drive and manually adjust my fuel maps just by watching o2 feedback and hitting + or - key to bring feedback value back to 0. i can even do this same thing with the ignition map, just listening for pinging and looking at map and knock values instead of o2 feedback. when i am done with this car, it will goto a junkyard or be parted out as i will never part with this aem setup. this controller is so universal, you could make it drive your lawn mower. and yet it can also drive an 8 cylinder(with batch firing and waste spark) and it can drive an engine all the way up to 25,600rpm's. this controller is worth every penny of what aem charges. there is no equal to having an engine controller that sees and uses a wideband o2 for feedback. to be able to stay in closed loop or feedback or trim fuel accurately at wide open throttle when commanded afr is 12.8 or 11.5 is just, well, it SHOULD be the industry standard. i run 3 wire smart coils and high impedence injectors, so there are no extra modules or resistor boxes involved. harness is only 36 pins/wires so it can be setup very clean. AEM really did good with their series 2 ecu's and the ems-4 is i think the cheapest series 2 ems. this controller drives my variable length intake runners and vtec, and i even have my a/c compressor driven by it, so it shuts down at vtec turn on or wide open throttle. oh, and i has built in datalogger that records up to like 128 samples/sec. and it can be setup to record on a loop, so once it fills up, it just starts overwriting itself, so at the first sign of trouble, you can just download the last several, or many hours of driving to your pc, and use that for diagnostic purposes. i have had my aem controller for a while now and have spent a great deal of time with it and learned most of it's ins and outs and am still every bit as impressed with it as the day i got it.
    Last edited by AutoWiz; 01-12-2014 at 02:56 PM.

  5. #75
    Constant Bitrate AutoWiz's Avatar
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    I have never been able to get the touchscreen to work right on my build. I finally after all this time found the divers for the touchscreen and now it works splendidly. I am so happy with development. now my keyboard is optional. joy!
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  6. #76
    Constant Bitrate AutoWiz's Avatar
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    added wireless router and 13.3" android tablet and remote desktop app for easier tuning without a laptop and usb cable.
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  7. #77
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    Nice

    So says latinmaxima, so it shall be!

  8. #78
    Constant Bitrate AutoWiz's Avatar
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    i know this can't be surprising to anybody that has seen this thread...
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    trippah likes this.

  9. #79
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    Sure is a lot of wiring! Great job!

  10. #80
    Constant Bitrate AutoWiz's Avatar
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    yea it was a lot of wiring. and a lot of circuit testing. that aem controller is expensive enough that you want to make darn sure everything is wired right before you plug it in, lol. after an entire summer of wiring, when i connected the battery, the only thing i had wrong was the relay in the underhood fuse block i re-assigned to be my vtec relay had the nc post still connected to a ground. and i had common as pwr and no as vtec solenoid, so whenever the vtec wasn't engaged it'd pop the fuse. out of everything i did that was the only problem. i mean i did go through a couple of alternators due to a output vs load issue at idle. but that was not the fault of my wiring. in the end i paid a chunk of money to an alternator repair shop and they got the 110 amp alternator up to 160 amps and got a smaller pulley for it so it can handle the +100 amps at idle my car can draw at times. the below picture is illustrating a 20 milliamp draw on the circuit I am testing. at 20ma this circuit/test could only be ignition off draw. and the draw is coming from the aem ems-4 and 250watt m4-atx dc-dc power supply I bought right here at mp3car.com.
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    Last edited by AutoWiz; 02-09-2014 at 12:18 PM.

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