A cheap "standalone" solution?

[CustomMSP]

I was talking to a Mitsubishi Evolution 8 owner who's using an open source (free) tuning solution for his stock ecu which is capable of tuning every aspect of the computer. It makes sense that this combo could be adapted to any car just like any other stand alone ecu solution. It'll of course need to be wired in properly and then tuned. In any case, the ecu can be had for about $100 plus the OEM evo harness. It's unbelievable how many parameters can be adjusted on the stock evo ecu with that open source software. Any thoughts?

 

[Alejo_NIN]

highly doubt it will work.

 

[CustomMSP]

How come? The concept is the same as any other stand alone - it's just a computer. The problem would arise if there was no software to program or control it's features. In this case, there is software. Think of this as a Mega Squirt. Sure, we might need to use a few of the Evo's sensors, but that should not be an issue. However, i could be completely off base here.

 

[Alejo_NIN]

i may have read this incorrectly.
sorry, but if you are comparing it to the megasquirt, then yea..could be possible.

 

[Ricktalife]

Considering the factory ECU is made to learn around any adjustments that are made, I'm not sure it would work. I think it would react pretty much the same as a piggyback EMS does. Even if you would successfully change a setting, there are probably fail safe's built into the module that would throw the car into limp mode just to make sure that Mazda could not be blamed for it (had there been a factory defect while under warranty).

Don't get me wrong, I think it would be awesome if you can pull it off. But I think an actual standalone is the end all be all for this problem the best way to eliminate the bad tune is to remove it from the equation.

edit: Actually I think I misread your original post as well lol. I was thinking you meant to somehow tap in to the factory ECU and alter it without using an additional module. Or is that what you meant?

 

[03.5MSP]

In theory yes it could be made to work, because in reality just like any ecu its just a bunch of 0 and 1 that are connected to sensors. Its kind of like if you got a Motec ecu and you have to run your own custom harness and sensors, that concept is the same, i believe. However the unknown is what i think the issue may be.. ie, what ohmage does the ecu use to control injectors, how is ignition controlled, fuel pump, cam sensor, crank sensor. Does the ecu control the alt, what about the iat, maf, etc... Sure you can find all the stuff out and just swap over all of the evo sensors, but even then its all alot of work for something that may not work, because at that point you are changing alot more than just values for fuel and timing to the ecu .. But it could be very fun and challenging.

 

[CustomMSP]

You brought up a good point, Marco, in the fact that a lot of the mazda sensors might not provide the correct feedback to the Evo ecu. Another issue might be in the Evo ecu going into limp mode without feedback from sensors which the MSP doesn't even have such as the YAW and other drivetrain related stuff.

 

[CustomMSP]

I'm talking about using the EVO ecu as a stand alone replacement, possibly leaving the stock ecu for things like the alternator, instrument cluster, etc..

 

[CustomMSP]

How unlucky us Protege guys are, huh? The Mitsu and the Subaru guys have had this open source tuning all along.

 

[Alejo_NIN]

So it wont be a stand alone, it'll still be a piggyback

 

[Bock]

It can be done if the two motor run coil on plug and if the rotation of the motor is the same ( dunno if they are all the same )

I saw a 4g63t running on a honda obd1 ecu ( imo the best eco for cheap tuning and lot of feature and lot of tuner ) But they run with a distributor.. maybe with a ford probe head( think they had distributor )

I wish i could put a honda ecu on my msp

 

[StealthWyvern]

Hm.. interesteing that I jsut ran across this thread because i asked spicy for a copy of the stock files to look at with a hex editor just to see how roms are edited via crome/hondata's software

So it wont be a stand alone, it'll still be a piggyback

no more like a parellel setup from what i gather

 

[Bock]

i did some research and found that they have a lot of setup of toyota engine running honda ecu.

like i said before, using the honda dizzy on a probe 2.0l head could possibly work. and i found that engine rotation doesnt matter.

Do a quick google search like ;

Honda ecu on mazda
Honda ecu on toyota
etc..

 

[o0n8]

I'll be running the Haltech as a piggy back, The plan there is somewhat like mentioned here. add a harness from the factory plug to the ecu and redirect the wires for tuning to the haltech while leaving things like the alt etc on the factory.

 

[Ricktalife]

I'll be running the Haltech as a piggy back, The plan there is somewhat like mentioned here. add a harness from the factory plug to the ecu and redirect the wires for tuning to the haltech while leaving things like the alt etc on the factory.

Precisely what I'm doing, except with the AEM EMS-4. I had Sam wire the EMS harness into an extension harness and it will have full control over fuel and timing, while keeping the basics (gauge cluster and such) hooked up to the factory ECU.

 

[StealthWyvern]

Precisely what I'm doing, except with the AEM EMS-4. I had Sam wire the EMS harness into an extension harness and it will have full control over fuel and timing, while keeping the basics (gauge cluster and such) hooked up to the factory ECU.

if i go stand alone im leaning mor towards teh AEM due to knock detection

 

[Ricktalife]

if i go stand alone im leaning mor towards teh AEM due to knock detection

Hopefully I can get it installed before the world ends and tell you guys whether it works well or not.

 

[CustomMSP]

Hopefully I can get it installed before the world ends and tell you guys whether it works well or not.

good one haha

 

[jeffmsp]

sounds interesting but alot of work to figure out when you compare it to the cost of a proven EMS solution. add the cost of an evo ecu and the time it will take to get it running and how much better off are you compared to just buying something proven to work like a used megasquirt setup.

 

[HKPRO5]

Sub.