I've probably flashed my ECU 20+ times since the install. Works fantastic. No issues whatsoever.
I am also baffled that more people haven't been doing this. I know I'm not the first person to think of it.
I heard of it being done a couple of years ago, but there was never anywhere close to this much documentation. I think thats why so many are enamored with this. It's rare and elusive.
____________________________
CB
'98 GSX
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Sorry for the lengthy explaination. I hope it didn't confuse you further. If you are still having trouble with this, let me know and I can try to make you a diagram. This is the best I can offer with a textual discription.
Lots of questions
Are you running the evo8 maf with this?
Have you noticed any difference in drivability or other weird stuff?
Does the electronic boost control work, i saw some tables when i was going through a tuning tutorial for ecuflash and apperently you can change wgds and other bcs values...wonder if the 2g bcs is compatible to do this.
Wonder if its possible to run a GM maf by changing the values in the evo8 maf table...
It looks like most people aren't and the scaling seems pretty easy to set.
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Does the electronic boost control work, i saw some tables when i was going through a tuning tutorial for ecuflash and apperently you can change wgds and other bcs values...wonder if the 2g bcs is compatible to do this.
I wondered about this too, I'm pretty sure the stock 2g bcs will not be useful but that an evo8 one might be, and I'm betting they're cheap.
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Wonder if its possible to run a GM maf by changing the values in the evo8 maf table...
First of all I'm pretty sure the cables aren't even remotely similar, second there is enough difference that I'm pretty sure scaling on any level will be fruitless. The evo guys use a translator so its unlikely that we are going to find a workaround.
yea I bet getting a evo8 bcs would let us control the boost, its probably just a 2 wire (signal and ground) sensor like the 2g is.
In regards to the GM maf wonder if it would be best to get a evo 8/9 maft or chip from fullthrottlespeed.com or if its better to use a 2g maft and change the values in ecuflash.
Lots of questions
Are you running the evo8 maf with this?
Have you noticed any difference in drivability or other weird stuff?
Does the electronic boost control work, i saw some tables when i was going through a tuning tutorial for ecuflash and apperently you can change wgds and other bcs values...wonder if the 2g bcs is compatible to do this.
Wonder if its possible to run a GM maf by changing the values in the evo8 maf table...
Regarding the MAF, I have seen no problems running the stock 2G maf. To be honest, the car idles and runs the same if not better than stock. As long as you have the scallings correct in EcuFlash, you should have no issues.
Regarding the bcs, I have not messed around with this yet. If it doesn't work though, I see no reason why one from an evo wouldn't.
I searched the thread and couldn't find anything about injector sizing.
your using 450cc injectors and the evo ecu is expecting 560cc injectors so without changing the fuel maps you's probably be logging lean, the deadtime is the same though. How did you deal with the difference in size of the injectors?
Also phantom knock, i saw some PK counts in the logs you posted...has it gotten better or worse since you did the swap? On this note, i never hear about the evos having partial throttle knock...wonder if the knock sensor from an evo would be an upgrade for us 2g guys...
I searched the thread and couldn't find anything about injector sizing.
your using 450cc injectors and the evo ecu is expecting 560cc injectors so without changing the fuel maps you's probably be logging lean, the deadtime is the same though. How did you deal with the difference in size of the injectors?
Also phantom knock, i saw some PK counts in the logs you posted...has it gotten better or worse since you did the swap? On this note, i never hear about the evos having partial throttle knock...wonder if the knock sensor from an evo would be an upgrade for us 2g guys...
EcuFlash allows for full injector scalling. This means you either go up, or down. I just typed in 450 into the injector scalling table, and the car ran fine.
Most if not all of my partial throttle phantom knocks you are referring to were from old logs, from when before I fixed my check engine light / 02 sensor issue. The Ecu wasn't going into closed loop mode fast enough because the guy from RRE accidentally disconnected my second 02 sensor. After i fixed that, the partial throttle knock dissappeared. I would be surprised if the knock sensor from an evo yeilded any different results than a knock sensor from a 2g.
i am looking at picking up an EVO ecu here pretty soon so i will have some questions i might need answered. my setup will be a little different, i have a MAFT Gen2. but for now i was just curious if you had seen this yet?
So I finally made it out to my car today and verified that I do not have the secondary diagnostic port, I believe I have all of the information that I need to install one when the time comes and we get out of sub zero weather but I just wanted to clarify that I'm looking for the right part since I have never actually seen one. If I am correct I am looking specifically for a white 12 pin connector out of a 98/99 turbo car? It seems like the n/t cars have these and they look the same but I'm not sure if the wiring is the same for them.
If someone happened to have a picture of the accompanying wiring coming off of it or if it is just a single wire which pin it is attached to that might be helpful also though maybe it isn't necessary.
I'm fairly certain (though not completely) that 95-97 turbo cars did not come with the re-flash port. I believe all 2g n/t cars have them and any turbo car with a plastic case ecu (98/99) will have one. I have no idea if 1g cars have anything like this. I also have no idea about the n/t spyders but in at least one case in the thread I linked there wasn't one.
i am looking at picking up an EVO ecu here pretty soon so i will have some questions i might need answered. my setup will be a little different, i have a MAFT Gen2. but for now i was just curious if you had seen this yet?
I'm fairly certain (though not completely) that 95-97 turbo cars did not come with the diagnostic port. I believe all 2g n/t cars have them and any turbo car with a plastic case ecu (98/99) will have one. I have no idea if 1g cars have anything like this. I also have no idea about the n/t spyders but in at least one case in the thread I linked there wasn't one.
My brothers 1997 (aug 1996 build date) eagle talon AWD has an obd2 diagnostic port. I used evoscan very successfully with it. . . Do you mean the white REFLASH/programming port?
____________________________
Matt
dd '90 GST, Holset H1C
Yes, everywhere that I have seen it referred to it was called a "Mitsubishi diagnostic port". I guess it would be misleading if you only read that post and not the two above it. I will edit my post to make it clearer so that no one accidentally gets bad information from a search.
I'm fairly certain (though not completely) that 95-97 turbo cars did not come with the re-flash port. I believe all 2g n/t cars have them and any turbo car with a plastic case ecu (98/99) will have one. I have no idea if 1g cars have anything like this. I also have no idea about the n/t spyders but in at least one case in the thread I linked there wasn't one.
I have a 95 Talon AWD and it dose not have the re-flash port so when I re-pined my patch harness to do this swap I just cut wire 79 out of the harness and used the half of the wire thats on the evo8 ecu side of the harness and connected it to the tantrix cable I was able to link up with the evo8 ecu with no problem well I did have one problem the evo8 ecu I got from a freind was bad and would not start the car so now Im looking for a good one (he had swaped out his ecu because his evo would not start when he installed the new ecu he found some wiring problems so he was not sure if the ecu was bad or not )
I understand that it is simply a matter of providing +12v to that pin at startup and that there is an easy solution. If I have to I will just do that but I would like to have the actual connector. I think I've found one from a local so hopefully I'll have one soon.
So I finally made it out to my car today and verified that I do not have the secondary diagnostic port, I believe I have all of the information that I need to install one when the time comes and we get out of sub zero weather but I just wanted to clarify that I'm looking for the right part since I have never actually seen one. If I am correct I am looking specifically for a white 12 pin connector out of a 98/99 turbo car? It seems like the n/t cars have these and they look the same but I'm not sure if the wiring is the same for them.
If someone happened to have a picture of the accompanying wiring coming off of it or if it is just a single wire which pin it is attached to that might be helpful also though maybe it isn't necessary.
I followed the pin on an EVO wiring diagram and found that the corner wire that hooks up to the tactrix cable is a Ecu chasis ground. I believe if you can go find a connector at a junkyard cut it off and chasis ground it you will have your second port. Since the tactrix only uses this to ground itself for flashing/logging. My N/T spyder did NOT have this port I took it off a 2gb 420a car in the junkard.
I followed the pin on an EVO wiring diagram and found that the corner wire that hooks up to the tactrix cable is a Ecu chasis ground. I believe if you can go find a connector at a junkyard cut it off and chasis ground it you will have your second port. Since the tactrix only uses this to ground itself for flashing/logging. My N/T spyder did NOT have this port I took it off a 2gb 420a car in the junkard.
The Tatrix cable only uses one wire in the flash connector. The extra two wires are there for support so the pins won't pull out of the connector easily.
The one wire that is used is hooked up to the ecu harness. (Pin 79, I think)
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I understand that it is simply a matter of providing +12v to that pin at startup and that there is an easy solution. If I have to I will just do that but I would like to have the actual connector. I think I've found one from a local so hopefully I'll have one soon.
There is no need to apply +12v. Everything is handled by the cable. Reflashing is started by an init sequence in the communications protocol.
My tactrix only has 1 wire in the connector not 3, but it is the one that requires the ground (pin 79). Thats all that connector really does, which is why you can just pick up a connector and ground it out and it should work correct?
Alright, I assumed that it was a matter of applying +12v because of Madman's post in the ecuflash tuning thread for the 98/99 ecus. I guess that this is a bit different.
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Activate the CPU with a reset. (Activation from user program mode is possible by applying 12 V to the Vpp pin during the reset, i.e. while the RES pin is low*2.))
My tactrix only has 1 wire in the connector not 3, but it is the one that requires the ground (pin 79). Thats all that connector really does, which is why you can just pick up a connector and ground it out and it should work correct?
There is no need to ground the connector, just hook it up to pin 79.
Alright, I assumed that it was a matter of applying +12v because of Madman's post in the ecuflash tuning thread for the 98/99 ecus. I guess that this is a bit different.
Think Madman was talking about the actual cpu pins, in trying to get the 98/99 to flash.
No need to do this with the Evo8 ecu.
Well, I finally got the time to put an EVO ECU into my car. It works great! There are a couple of things, like the RPM gauge dropping when pushing on the gas pedal, and the factory boost gauge not working, but those are minor. Overall I am very happy with the way the car runs. Now I need to do a little tuning to smooth it out.
Well, I finally got the time to put an EVO ECU into my car. It works great! There are a couple of things, like the RPM gauge dropping when pushing on the gas pedal, and the factory boost gauge not working, but those are minor. Overall I am very happy with the way the car runs. Now I need to do a little tuning to smooth it out.
Yeah, I also have the RPM problem. I heard that changing the length/gauge of certain wires could solve this problem, but I really don't care about it very much.
I am not aware of any output on the evo ECU for boost expressed in volts, so yeah the factory boost gauge will not be functional anymore.
There are a couple of things...like the factory boost gauge not working...
Now that I think about it, I wonder what the volt range is for the 2G factory boost gauge. It may be possible to splice the knock sensor signal wire to also go to the 2G boost gauge wire. If the volt ranges between what the knock sensor puts out and what the 2G boost gauge is expecting, it may be possible to have a functional stock-looking knock gauge right in the factory instrument cluster! Even if the voltages are off, im sure resistors or something else (electrical engineering is not my specialty) could be used to make the 2G factory boost gauge move around when the Ecu sees knock. Any one know the voltage values that a knock sensor puts out vs. what the 2G boost gauge is expecting?
knock sensor is supposed to be 0 to 5v i believe.. at idle its .5 volts or lower and during driving it fluxes up and down betwen .5 to 1v to whatever depending on knock or not.. thats pretty interesting -- it does put out voltage dunno how many mA but u can log the voltages in evoscan.. But u would probably cause interference if u spliced the knock sensor.
