2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Stock ECU Real-Time Tuning / Datalogging

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Old Aug 10, 2014 | 07:14 PM
  #126  
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Attached Thumbnails Stock ECU Real-Time Tuning / Datalogging-screen-shot-2014-08-10-8.13.30-pm.jpg  
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Old Aug 14, 2014 | 08:10 AM
  #127  
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I've got all the hardware bugs resolved and have finished up the majority of the ROM code. Once I get the application updated it'll be all set for use in some cars.
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Old Aug 15, 2014 | 10:18 AM
  #128  
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The retard amount is good to know. Have you by chance found any information on what the sensor's output is? I realize it's piezo etc, reason I am asking is that I was considering running 'stereo' KS's, one on each rotor housing.
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Old Aug 20, 2014 | 01:24 PM
  #129  
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Ok everyone, I've been told we need one more guinea pig for the prelim trial. Who's in? I've got parts waiting to build this thing, so someone else needs to message SonicRat and get on board with this!
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Old Aug 20, 2014 | 03:14 PM
  #130  
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Originally Posted by RX744CSP
The retard amount is good to know. Have you by chance found any information on what the sensor's output is? I realize it's piezo etc, reason I am asking is that I was considering running 'stereo' KS's, one on each rotor housing.
In the diagram above it says 3.5khz +/- 0.3khz
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Old Aug 21, 2014 | 07:32 PM
  #131  
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Looks like I missed that, gotta get my eyes checked. Thanks!
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Old Aug 23, 2014 | 01:07 AM
  #132  
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I've got the next batch of boards on order which will be going out to some testers in various locations. I swear, I really need to stop adding in new features, it's holding up everything, lol.

This project has kind of ballooned quite a bit from what I had first expected to do. I was first just planning on doing the basic things, similar to what RTEK does -- fuel, ignition, transition, and leave it at that. But, as I've gone on and stumbled across the routines in the ECU i've added in new functions for those as well, such as: idle speed control, air/water temp timing correction, cranking fuel maps, secondary injection fuel differential, afm removal, etc. It's taken me a lot longer to get where I wanted to be, but the result is a lot more control over everything.
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Old Aug 23, 2014 | 01:30 AM
  #133  
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I can donate my s4 t2 ecu
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Old Aug 23, 2014 | 01:52 AM
  #134  
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I currently have 4 S4 TII ECU's on hand, so I'm good there. It'll just be a matter of bug fixing/adding features into the code for the S4 TII group now. The board should fit the S4 NA as well, but I've not yet worked on their ROM -- although once the TII one is finished up, the S4 NA will be extremely easy as many routines are very similar.
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Old Sep 3, 2014 | 08:29 AM
  #135  
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WARNING DUMB QUESTION AHEAD: Forgive me if I have missed any posts on this: is it possible that the datalogging etc could be accessed via iPhone or a tablet, or ???
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Old Sep 3, 2014 | 09:29 AM
  #136  
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Originally Posted by RX744CSP
WARNING DUMB QUESTION AHEAD: Forgive me if I have missed any posts on this: is it possible that the datalogging etc could be accessed via iPhone or a tablet, or ???
I forget if I asked it via PM or on here, but I believe NO was the answer. SonicRat had no intention of creating an interface for phones. You could always emulate the palm on an Rtek if that's what you're looking for.
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Old Sep 3, 2014 | 09:48 AM
  #137  
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Good to know. I guess I'll drag a lappy around...
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Old Sep 3, 2014 | 11:44 AM
  #138  
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I don't feel like paying the $99 to be able to publish Apple programs, and I don't believe their bluetooth stack supports serial anyway -- so it'd have to be a custom fab job done with either the microphone or a some other cable job. Android would be fairly straightforward to do, but I doubt I would have the time for it.
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Old Sep 6, 2014 | 03:07 AM
  #139  
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Any word rat? I love to hear you talk technical. Totally want to ditch my faulty air meter and turn up the boost..
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Old Sep 6, 2014 | 08:46 AM
  #140  
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Mostly just waiting on more boards to come in. I've got almost all of the ECU programming done for now.
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Old Sep 6, 2014 | 09:41 AM
  #141  
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Rat have you looked into JDM ecu's I have a chipped knightsports one if your interested LMK
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Old Sep 6, 2014 | 10:00 AM
  #142  
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For S4 or S5? I don't believe at this point I would really have any use for a S4 chipped ROM, as I've already far surpassed what most of those chips do with the S4. The S5, I have currently done no work at all on, although I do have the stock N374 EPROM from one.

The "list" of S4 features so far:
  • Adjustable Ignition Tables (20x20)
  • MAP Based Ignition Tables
  • Adjustable Fuel Correction Table (20x20)
  • Adjustable Injection Staging RPM
  • Adjustable Injection Staging Percentage
  • Cranking Fuel Map
  • Water Timing Correction
  • Air Timing Correction
  • Boost Cut Limit
  • De-Flood Proceedure
  • AWS Disabled
  • AFM Removal

There's a lot more left to do as well...
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Old Sep 6, 2014 | 02:16 PM
  #143  
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Its an S5 LMK if you want to mess with it
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Old Sep 6, 2014 | 05:06 PM
  #144  
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I have an N333 on the way, once I test it and make sure it works in stock form I'll be sending it on. I can shoot you the two unmolested N374's I have as well. Will PM you when it's all ready to go.

Dumb question (yeah I'm full of 'em): is it possible to run 4 individual ignition coils with this setup? The stock trailing ignition uses a 5v rise/drop to determine which coil to fire, is it possible to add a daughterboard etc to do this and thus eliminate the stock amplifier module? Or is this getting way out in left field?
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Old Sep 8, 2014 | 06:49 AM
  #145  
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I've still got the stock roms from my S4 NA (N326) Pre-Rtek install. Would those be of any use to you?
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Old Sep 8, 2014 | 05:22 PM
  #146  
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Are any of the stickers on the top of the EPROM different than 0276/0286 or 0277/0287?
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Old Sep 8, 2014 | 06:45 PM
  #147  
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Actually, yes.

The two chips I have are marked 079753-0275 and 079753-0285
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Old Sep 9, 2014 | 03:46 PM
  #148  
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Ah, I don't have that EPROM combo. Not sure it's a huge difference over the other two though.
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Old Sep 10, 2014 | 10:36 AM
  #149  
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I may have the same PROMS at home, I can probably desolder them and make a dump for you.

Also, if you throw me some protocol documentation, I will give a shot at making an android app
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Old Sep 10, 2014 | 01:19 PM
  #150  
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Protocol is pretty much the same as the PowerFC.

CMD - LEN - DATA - CHKSUM

ex: 0xF3 0x02 0x0A (request platform ID)
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