SR20 Soon?

Here is the scenario, might take a minute to read but bear with me please.

Using rom editor to analyze the data differences between calums VE bin and the stock DE bin files. Reason: I need to figure out the differences with the base timing maps so I can apply that information to the timing adjustment map in e-manage blue which is on my stock de ecu to compensate for the timing differences between DE and VE.

Now im not a total idiot when it comes to hex, dec, and binary. I dealt with a lot of it in some of my computer related endeavors so thats not whats confusing me. The rows and columns displayed in rom editor are rpm's and boost. Rpm, obviously not confusing and directly applies to my settings in emanage. The boost section i read is supposed to be TP which is manifold pressure? This is just what i read and im trying to figure out how to relate manifold pressure to air flow voltage or at the least register in my head the difference in timing between the 2 base timing maps enough so I can make an educated decision on timing adjustments.

Also as i look at the 2 fuel maps (the de and the ve) the ve has a HUGE difference in numbers. I cant even comprehend how these two maps can be related what so ever or what i can do to make my setup more VE friendly. I dont intend on doing any sort of large or drastic adjustment to any fuel enrichment or additional air currently, im going to wait on that for dyno time and a wideband o2 sensor. I just would like to get in the ballpark, hopefully to enhance performance until the turbo install comes around. I did pick the emanage for specific reasons so please dont just tell me to buy a JWT or a Calum basic/realtime to alleviate these issues. I appreciate anyones input on this and I want to let you know before responding that I am completely new to bin files in the sense of ecu tuning and understanding. Please try to explain as good as you can and refrain from calling me stupid

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My car is old.

Setzer

If it's around 128 off, that is due to the knock sensor for timing maps and the o2 sensor for fuel maps. Easy way is to look at them side by side in a graph in rom editor (ctrl-g) and play around with the 7 and 8 bit check boxes. Then you can compare accurately. TP is theoretical pulsewidth aka load.

SR20 Soon?

So is it possible to calculate what my TP would be at a certain voltage from the MAF reading? If not how could i relate the TP to my e-manage settings? Is it relative to the load on the real time display in the manage?

Setzer

It would be roughly relative to the load on your eman. Best bet is to run something nice and conservative and hit the dyno. I don't know of any sure fire ways to extract tp from maf voltage.

SR20 Soon?

I would think there has to be a way to convert the voltage from the maf to figure out what the load needs to be. Mainly because the ecu uses the maf readings to calculate so in my mind i think there has to be a way that it somehow can be calculated.

Does this have to do with it and can it be explained in an equation to simplify what its explaining?

http://www.patentstorm.us/patents/6912999-fulltext.html

Calum

Why bother? You can read TP directly from the ECU.

SR20 Soon?

In emanage it gives me adjustment rows based on voltage from the maf reading. If I dont know around what that is in "tp" i dont know where to make my adjustment nor do i even know what those values mean in the 16x16graph in rom editor.

For example: This is strictly timing map right now, ill worry about fuel map later.

at 4.6v on the airflow meter hot wire @ 7500 rpms what would i put in the box to compensate for:

The de base map: Only shows up to 6800 with 80 "boost" under the .26 value and the data in that square is 25.

The ve map: Shows up to 8000rpm, but ill put up the data at 6800 for comparison reasons. 6800 with 68 "boost" under the .20 value and the data in that square is 32.

What exactly does that information mean? All I get from it is that at the 6800 rpm point the ve is a higher value than the de. My questions are:

What does the different value in the "Boost" section mean? When I change injector size to 330 the numbers in the boxes above change as well as the bottom row of values. Do they simply change to compensate for the larger size of injector?

What does the 25 value in the red box mean? How does it compare to the 32 from the VE map?

Does the highest column of "boost" in rom editor equal out to the highest column of "airflow meter hot wire voltage"? If so how do i translate the data into the graph into degree of timing?


Sorry this is a lot of questions and probably a lot of babble. Ive read probably 20 pages on rom editor and ecu tuning so far in the past 2 days an none have provided me with the information im trying to get. Everyone told me to ask calum so I appreciate your help man.

Setzer

He is saying that with a consult cable and a laptop you can directly read tp from the ecu, then compare that to where you are in your eman. Really though it's not worth stressing out about too much, either run a de setup on your eman and hit the dyno or sell it and get a calum setup (better option imo).

Calum

...and quit using Rom Editor. Use TunerPro. :P

The 'boost' numbers in Rom Editor don't mean anything, they were based on the authors car. Obviously the ECU has no pressure sensor, so nothing is based on manifold pressure in the ECU.

Comparing TP values from one ECU to another is kind of tricky if the injector size has changed. TP is the 'theorectical pulsewidth' needed for a given load and rpm to achieve 14.7:1 AFR. The TP numbers your looking at are unscaled too, not actual pulsewidth values. It really doesn't matter, just think of it as 'load'. So when you compare two ECUs setup for different size injectors you can't directly compare the TP values. You can scale them to get a rough idea, but what you really need to do is just map trace the ECU your working with and look at exactly where your operating.

SR20 Soon?

So correct me if im wrong, which im sure i am lol. There is pretty much no way to translate the data of the bin files into an exact that I can use to adjust using e-manage? If that be the case dyno is really the only option other than my plan b, which is calum basic for n/a ve, n60maf 330cc stock inj and just throw the emanage on top of that.


The reason im trying to stick with emanage is that once i get out of my lazy funk, i intend on figuring out a way to utilize the vtec function to control the vvl solenoids. Mainly because it would allow separate solenoid control without the use of 2 msd 8969, or the greddy mss ect ect. Basically just to have something different