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

  1. #61
    Maximum Bitrate rray's Avatar
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    So far I have never played with an Arduino. All my friends keep talking about them, and I see stuff all over the web on them, so sooner or later I am going to have to jump onboard.


    It's guys like you who take things to the next level that inspire me to jump into things outside my comfort zone. Keep up the great work!

  2. #62
    Constant Bitrate AutoWiz's Avatar
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    it is easy to get into arduino. there is a series of youtube tutorials on the arduino. and once you have a good working knowledge of what you're doing, you can just pull up example sketches and just copy and paste what you need and make small alterations, and effectively don't even have to actually create your own sketch from scratch. like cheating. the boards are DIRT cheap and available EVERYWHERE. and in all shapes and sizes. find an arduino starter kit and start tinkering, man. I promise you it will be time and money well spent. or watch some of the youtube tutorial series first and see if you understand what's going on and if it looks like something you can get into. part 1 of the series is here: http://www.youtube.com/watch?v=fCxzA9_kg6s

  3. #63
    Constant Bitrate AutoWiz's Avatar
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    I am not going to re-post the same pics, but post #45 on page 5 of this thread shows my current fan control setup I designed and built. it works awesome. its 3 fans and 2 come on when the motor gets hot and 2 come on when the ac is on and only if the ac is on and the motor is hot will all 3 fans come on. the problem I am still having is when 2 fans come on in parallel the sudden load to the electrical system has a short term affect on the engine's idle speed. so this is my new design for a fan controller. the arduino will take 0-5v readings from the a/c high side pressure switch and engine coolant temp sensor, and will then light 2 or 3 fans in series, first, then take 1 at a time and switch it to parallel. this configuration will also allow me to light any 1 fan by itself, and give me multiple fan speeds to program based off of varying sensor readings. instead of just on/off. I am proud of this design. and I will post my arduino sketch in this thread after I write it.
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  4. #64
    Constant Bitrate AutoWiz's Avatar
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    finally strapped my aem accord down to the dyno at work to see what my efforts are really worth. the f20b is supposed to be worth 210hp@7600rpm measured at the flywheel. these numbers are measured at the wheels. usually there is a 20-25% loss of power when measured at the wheels which is why the vehicle manuf. advertise numbers measured at the flywheel. I am happy with these numbers at this point. and the incredible thing here is I got these numbers all the way from 7300rpm up to 8500rpm. and as such 8500rpm is where my rev limiter is now. AND I am doing this on a 2.0L and getting close to 30mpg. next for this powerplant will be a set of aem tru-time cam gears so I can advance exhaust cam 2 degrees and pick up a quick 10-20hp, then its getting a turbo.
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  5. #65
    Constant Bitrate AutoWiz's Avatar
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    Hey everybody, my 1997 AEM Accord is not just smart, she's fast. I broke 150mph. On the dyno of course. don't think I could ever brave that kind of speed on the street. but, if ever needed, my 2.0L Honda is capable.

  6. #66
    FLAC SNOtwistR's Avatar
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    Time to get that baby on the strip and get some 1/4 numbers, there's a whole other avenue with tires/compounds/pressures ect. you certainly have the pull at 8500rpm. Have you done any crank or block mods? SNO

  7. #67
    Maximum Bitrate rray's Avatar
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    That's fast! It's nice to have a fast car when you need that power to avoid danger. Save it for the track where there is emergency support if something goes wrong.

    About 30 years ago while going home from a kegger , I did 120 on an empty freeway at 3AM, and all of a sudden there was a mufler, right square in front of me, complete with attached exhaust manifold extending to the left side of the lane, and tail pipe extending to the right side of the lane.

    I had no choice but to hit it. I was on a 920 Virago, laying flat on the tank and seat, with my feet hanging off each turn signal, as flat and streamlined as my body could be. POW! Instantly I was airborne with my hands still on the handle bar grips, almost like I was doing a hand stand. When the bike came down, I came down and my chest hit the tank so hard it knocked the wind out of me so bad I could not breath in. A few seconds later when I could finally suck some air in, I realized I was still going 100, and I should be dead. Why I was not totally creamed and dismembered on the freeway that morning I do not know, but I do know all about $#!tting my pants, and driving too fast on public highways. It's not really like it is in a Fast and Furious movie.

  8. #68
    Constant Bitrate AutoWiz's Avatar
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    no block mods yet. the motor seems to take and handle all the abuse I throw at it on a daily basis. it's an awesome setup. it has the strongest internals and largest bearings out of any f/h block. I am trying to put back the $800 it is going to cost to aquire the aem 4 channel wideband o2 controller and 3 more uego wideband o2 sensors and once I have individual cylinder fuel trims working, it's getting 7-10 psi of turbo'd goodness. and when it comes apart I will build it to handle more boost. it is surely an expensive feature to add to an already expensive controller setup, BUT, with 1 o2 sensor looking at an average of 4 cylinders, if 1 coil fails or 1 injector sticks open, the ecu will lean out the other 3 cylinders beyond their acceptable limits. and under boost at high rpm's damage can occur. to be able to compensate for the 10 psi difference in compression from one good cylinder to the next is just an incredible feature to have. it will improve my gas mileage, it will build more power, it will make the engine run smoother, and it will make my engine live longer. I am trying to push reliability and longevity as hard as I can on my build. I want my build to last 100k or more miles. on the street I race up to the speed limit. lol. I have had many tickets in my early years of driving. like I said, I did it on a dynojet that simulated the load of driving on the street.
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    Last edited by AutoWiz; 12-08-2013 at 08:24 PM.

  9. #69
    Constant Bitrate AutoWiz's Avatar
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    FINALLY, I got to install my 34mm drop springs and kyb shocks/struts. the car rides great. I will post a better pic when the sun comes back out
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  10. #70
    Constant Bitrate AutoWiz's Avatar
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    here's a better picture of the new lowered stance.
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