Hello everyone! Been reading any and everything related to coding out egts and O2s. I almost have it down however I just need some more pointers.

some details on the ecu and car, its a tip s4 avant with an L box, the current tune on it is MTM stage 3* (really stage -2 here) mods are turbo back miltek, RS4 SMIC, 5bar FPR.

I had talk to a few people and was told that my ecu may be encrypted, and that i probably wouldnt be able to make the changes.

I ignored said people and tried anyways, I had a bin file on my comp that i had pulled for logging, and I downloaded the M box xdf and used both in tuner pro 'slice and dice'

Ive made the changes to the correct scalars, so now all i have to do is checksum and the upload the modified bin to the ECU?

And thats it, thats all I really need to know. If there are any additional pointers please let me know!

Thanks!

David.

Oh and heres a funny as a thank you for the help. (my car pictured)

I can't in good conscience tell you how to clone your MTM ecu.

I can tell you that me7sum will correct the file you uploaded. I could do it for you, but this is something that you should learn.

thank you, I wanted to mess with my tune a little more with out losing its original form. so one box base MTM, the other my tinker toy.

As for the checksum. I want to be able to do it my self, but it seems out side of my grasp. And at this rate the gas mileage is killing me.. both EGTs are dead. I cant describe how much I would appreciate if you could.....really.

Or at least a little more instruction, I am some what tech savvy, but not enough to go off acronyms that are used in other threads here.

important part is in bold.

I posted a how to on AZ, but the gyst is that you need to have the executable in the cmd root folder. That, and .exe isn't needed.

I when a head and purchased the tuner pro plug in. I'm reading about ME7sum, what I don't know is I have errors that are serious or that they are there because of what the ECU thinks is wrong. Or i just don't understand the nature of errors.

start > run > type cmd > drag and drop me7sum into window > (space) > drag and drop bin file to be corrected > (space) > drag and drop bin file again and then change *.bin file name to desired output file name > press enter

it doesn't get any easier than that, other than physically driving to your house and doing it for you