ECU differences. To get any JDM tuners to do it, they want you to bring your car into their shop so that they can tune for your exact car. If that's not an option for you, then they do also take ECU's by mail. Part of the ordering processes requires you to specify your ECU model/build... the white label with big black lettering...

I suspect that the differences between the ECU's would make working on US ones impossible. Perhaps it's a difference in encryption... I dunno.

possibly something about needing a 3,ooo miles long obdII cable? :eek:

you can have your PCM performance modified & reflashed from Europe, not cheap though

What steps are the companies taking to ensure that the dyno works? The only steps that I am aware of are to Disable your DSC/TCS and remove the rear ABS sensors. Are there any other steps that they are taking on top of the ones that I have mentioned?

Hi all.
What is an ECU tune and what does it entail?
Pardon,,, but I’m new.
My dealer mech mentioned I might wanna look into a modified chip, changing my exhaust and going with a cold intake. Any suggestions would be appreciated.

The ECU controls the fueling of the engine among other things. By leaning out the mixture in various spots of the map, the engine can produce more hp, in exchange for higher cat temperatures, which may lead to reduced cat life. If a tuner has access to the Mazda maps/software, they can create their own flash for the ECU. Flashing the ECU is a simple process that simply requires a cable and CAN-pass-thru programmer.

So where is this solution at and will it be available to the US market?

Here i am.
If somebody needs more infos, just ask...
;)

what softwere?
 

what kind of softwere were u using?

Alex,

I'm back from holiday. I'll call you tomorrow Monday.

Fabrice

Bumpatybump

Any updates?

A question for hflax/ElScorpio: Can you provide some more information about the programming procedure that you are using. Are you reprogramming the EEPROM chip removed from the car, or are you using a CAN-pass-thru?

Did you download the original code from the ECU?

How did you tweak it? Did you simply replace a few bytes with a hex editor (the target AFR?). Or did you dissasemble the code and then re-compile?

What software/hardware is required?

Thanks

yeah and pass thru devices cost like $1500 dollars not exactly a cheap solution. im looking into finding a less expensive way.

on the Astra Racing units they are replacing some internal circuits in the factory PCM that allows them to take control of the LTFT function, $2000 euro

the software is available for free on the website

Would the way you are thinking about leave the ECU looking stock, or are you thinking about soldering a daughter board onto it?

just software

I was thinking about that too. My thought was that the CAN system is just a protocol. If we could find the spec for it ** AND ** the spec for a CAN connector, then it would be a fairly simple piece of software to perform a download. The difficulty is in gathering all the information, not the implementation.

Hardware wise, I am guessing you are talking about using a CANSCAN connector? Thats the route I would probably go with.

A CanScan USB, J2543 software, and a programming cable can do pass-thru programming.

i am aware of the options ;)

you mentioned befor ethat you had a problem with the check sums. can you tell us more about that and how the milan company fixed that issue?

Bump - any more news or ideas?

I wonder how his car is running today?

Wow.

Which one? Gotta be more specific dude ...

Well, that would be Elscorpio's car