Contour Enthusiasts Group Archives Forums Modifications 3.0L Duratec Installing the GReddy eManage....help...comments

Thanks for the feedback. I'm still a little leary of the timing tuning - too bad there isn't a way to monitor where you are in timing without by necessity inducing detonation. With regards to the timing, does the PCM still have the ability to yank back timing if it detects a signal from the knock sensor (e.g. hotter day than when you set up the timing tables)? It sounds like the Emanage unit is taking an ignitition signal in from the PCM so I would expect the answer to be yes, but if that's how the unit is working then how is it able to handle negative shifts in the timing unless it is internally delaying the ignition signal that is intended for the present cycle until the subsequent cycle.

By the way, the comment I made about the ability to decrease fuel came from an early post where you indicated that the injector signal could only be increased, not decreased. What I now realize is that you have control over the fuel with both the MAF 'correction' and the injector duty cycle 'correction', but only the MAF one allows for both negative and positive changes. To ask another naive question, why are both tables needed when it looks like both are adjusting the same final parameter (fuel injected) as a function of the same input (manifold pressure via the MAF reading) - I'm probably missing something else here.

Actually, am I correct with that statement that the y-axis parameter is always manifold pressure? Are any of the maps a function of throttle position?

Anyhow, looks like a good alternative to chips for those doing or planning major mod work (like 3L ). Is there anything that a Diablo or Superchip does that the GReddy can't do? Only thing that leaps to mind is possibly removal of RPM limiter and speed limiter. Do the chips get any more sophisticated in terms of monitoring more variables (e.g. temperature) to make their decisions?

1. Will the pcm still pull timing in event of detonation?
Yes. The pcm control is still there, the timing module is just making calculations of the existing timing signal, therefore the pcm is setting the 'base' timing.

2. Why use two maps that controls fuel?
Well, the airflow map is good to get the system close, but it is less precise for control of fuel delivery. Consider that the MAF is still an 'input' sensor which can be modified or overridden by the pcm.
Lengthening the injector pulse-width is a very simple and precise way to add fuel at specific points. It is also an 'output' signal to the injectors so the pcm can not override the signal. The only way it can modify the added injector pulse width is during closed loop operation where the pcm uses the O2 sensors to calculate rich/lean conditions. It can then reduce the 'base' injector pulse-width.

3. Are any Maps a function of throttle position?
Yes, The airflow map is a function of throttle position, but the injector and timing maps are functions of rpm and airflow. This is because you don't want to advance timing at some % throttle because the airflow isn't always proportional. This safeguards the engine by adding fuel, or changing timing only when there is sufficient air.

I agree with your last statements that the chips are still valuable to move limiters for speed and rpm. The eManage cannot do that.

I think these very detailed and probing questions have finished illustrating the important points of the eManage, thanks.

As an update, I have been running this thing since the end of February and I have no bad things to say about it. The flexibility is as good as I've claimed in that you can save as many maps as you have hard drive space and load them to the unit in a matter of seconds. The real-time data displays are proving invaluable as I am now able to completely graph things like injector duty cycle/pulse-width versus rpm or airflwo or throttle position, etc. The map-trace feature is usefull to tell me exactly what cells in the map are being hit at a specific time during an acceleration run so I know where to make modifications.
Switching out injectors or MAF's is as easy as uploading a new map to the unit.

Timing module is still under developement but is almost done. Even without it the device has proven its value.

My recommendation is: Buy it!

warmonger

OK It will be here thursday Thanks again for pioneering this, I can't wait to play with it next week and see if I can smooth out my powerband.

Thanks for all the help keep us posted on the ignition add-on.

Buy SHM MAFterburner

Sorry, it doesn't stack up to the eManage when price and features are compared. Just the software capabilities of the eManage are enough to smoke it without even considering the add-on stuff.
:p
Its not a bad product, but not for me.

warmonger

I need a cable for the E-manage. I emailed the person from this page: http://mkiv.com/tmp/emanage/ but he said he only sells the cable to people that buy the E-manage through him. So put me on the list for a cable if you haven't already. I have sent PM's before about it but I need one as soon as you get a chance.

Thanks,
Chris

The guy at mkiv.com told me this morning that the cable and software would be $76.00 if I bought the unit from him ($299.00), but if not, he was getting a group buy together for the cable/software for $130.00 (it's coming from Hong Kong).....I just ordered my "E" from secretRx7.com for $310.00, so I guess I have to get in on the group buy....Warmonger, any additional info or prices?

Yeah,

Just FYI:

So far the only way to get the cables so far besides the ones I make is from overseas, thats why the $130 charge.

I am building more cables right now. As soon as I get a batch done then I will post it here and get them out to you guys.

Things have been delayed since I have moved to Missouri for the summer. I just got here yesterday so it will take me a little while to get things squared away. This will be the first priority of my off-time.

warmonger

Where in Missouri? Seems we should meet up since Iowa is only one state away... How long you in for? :p