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If you want to try and control ignition timing with the E-manage, it gets REALLY tricky. Installing the E-manage so it can modify the airflow signal is actually not that hard - it's been documented as to which pin is what to tap into. If you are comfortable with very basic automotive wiring, you can hook it up.
Tuning it properly really needs a wideband, or hopefully one of the coming ECU scan tools can interpret the factory wideband for tuning.
Dale
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Dale Clark
RX-7 Bad Ass
'94 RX-7 R2 Brilliant Black - building the perfect FD
Do you know if you can just fool the ecu by running a resistor across the terminals where the factory injectors plug in so that a standalone fuel computer could be wired in directly to the injectors? In other words unplug the injectors from the factory ecu, fool it and then control the injectors off of a new ecu. Is this how everyone is trying it and would this work without the ecu knowing something is wrong? You could do little things with resistors and diodes on the 3rd gen but I've never tried anything at this level. I would think it can be done but is it this easy?
1: Is this just a ecu with nothing loaded in nv ram or flash able to plug into the RX-8
or
2: Is this a stock RX-8 ecu loaded with the factory settings (and if so for what country or market)
or
3: Is this a modified RX-8 ecu for better performance
I have searched the internet.....and lacking any Japanese reading skills....I have not found anything
And this is the only post I have found with the feed ecu on it.
So does ANYONE have ANY info on the feed ecu….no matter how mundane or seemingly unimportant
No warranty!?! And after looking at the site I didn't see any dyno charts or anything what kind of hp is this ECU upgrade suposed to add? And does it cover all rpm ranges and is it compatible with an aftermarket high flow/high temp cat?
Originally posted by rotarygod Do you know if you can just fool the ecu by running a resistor across the terminals where the factory injectors plug in so that a standalone fuel computer could be wired in directly to the injectors?
As far as I can tell after pouring over the Engine Control section of the shop manual, the ECU doesn't even have a routine for checking the impedance (or even the presence) of the fuel injectors. There is no DTC for any of the possible injector failure modes.
The trick will be reproducing the response time that the PCM expects between a variation in the WBO2S readings and a commanded (and circumvented via the stand-alone) change in injector pulse width.
Quote:
Originally posted by tygrr B: Can the GReddy e manage be used on the 8 by someone who doesn't have an engineering degree?
Yes, quite easily.
In fact, I've included everything you need to know in the threads that I started about the project.
You just need the basic hand tools and a wideband O2 sensor.
Last edited by MazdaManiac; 02-15-2004 at 01:42 PM.
what are ecu's? and what do they do? never heard of them
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6-spd manual, Brilliant Black, Red interior, 85% tint (or 15%), side strakes, K&N Typhoon Intake, Clear corners, Borla exhaust, Brake light, M-Flash.
Coming soon:a system, maybe a kit?
Get a good look at the back side of my 8, cause your gonna see it a lot.
so thats like gain of horsepower? the higher the stage the higher the horsepower?
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6-spd manual, Brilliant Black, Red interior, 85% tint (or 15%), side strakes, K&N Typhoon Intake, Clear corners, Borla exhaust, Brake light, M-Flash.
Coming soon:a system, maybe a kit?
Get a good look at the back side of my 8, cause your gonna see it a lot.
Someone else may be able to explain it better but the ECU is the brain of the car, it controls the fuel mix, spark timing, etc. To my understanding, the stage of the upgrade depends on how many features of the stock ECU are overridden; stage 1-fuel/air stage 2-ignition, and so on.
I recommend that you do a search on google and look up Engine Control Unit. There are plenty of places that discuss what this little box does in your car. It will also help you decide what kinds of modification if any you want to start with. Understanding the electronics of engine management is a good thing for any auto enthusiast.
Originally posted by RX8FanMan so thats like gain of horsepower? the higher the stage the higher the horsepower?
This guy is from the south so he's a little dense (inside joke). No offense to you remaining southerners, this guy is like a southern blond or something. And he called Gandu stupid...
The CanZoomer Stage 2 might be the way to go... it's a Greddy eManage with a preset map developed by CanZoomer with better A/F and ignition advance than Mazda's stock config. He's also selling it with the programming software and cable for something like ~ $150 additional cost. But this is not for the faint of heart or inexperienced tuner... one wrong step and you can ruin your engine.
Sorry RX8FanMan, didn't realize you were a 16 yo until after I read your profile. It's like there's no matching wits with you because you have to have some to begin with.
ECU w/out rewiring the whole car?
Linear Mode
