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Author Topic: Questions regarding Tuning and flashing a 4B0907551L 2.7l V6/5VT '00 A6 tip  (Read 2682 times)
GENXLR
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Hi, so I don't want to be that girl to come in here asking for a ton of help but I don't wanna mess up so I've been searching away and want to verify things.

So there is no definition file for the 4B0907551L however from this thread
http://nefariousmotorsports.com/forum/index.php?topic=9405.0title=

It sounds like it's possible to use a 8D0907551L Binary with the 8D0907551M Definition right?

What gets me here is it sounds like then theres a few issues starting with the MAF in the 8D0 bin is a Hitachi MAF and the 4B0 bin uses a Bosch MAF(Which is what is on my car). So this requires some values to be changed to make the Bosch MAF compatible which I could either dig out the headers for MLOFS, KFKHFM, and MLHFM and copy them over or I could probably adapt them from Andrew G.'s Binary located here?

http://nefariousmotorsports.com/forum/index.php?topic=9415.0

So If thats all fine and good the next thing I notice is mention of a Missing message from instrument cluster which is corrected in address 0x12C7A by changing decimal value 35 to 3?

Also something regarding a brake booster sensor or switch thats corrected by chaning 0x10C7B to Hex value F3 and Changing 0x18198 and 0x18199 from Hex value 01 to 00?

So if thats all thats needed to make the file run stock with no tuning would i face the same issues seen here that Andrew G had?

http://nefariousmotorsports.com/forum/index.php?topic=9731.0title=

If the answer is yes then I might need more hand holding but if the answer is something is wrong with His tune or car and I'll be fine then it gives me a starting place to begin tuning and Play with the car.

My end goal here is to delete both Cat's(And rear 02's) to transfer over the exhaust I made and also to delete the fail happy EGT sensors and the would be useless SAI since there would be no CAT's(My SAI Motor is really far gone).

I'm currently finishing rebuilding the motor and am finishing the top end up and Hoses and have already backed up my original ECU file with a Ross-tech KII cable. I want to make sure I'm understanding everything right so I don't make and expensive car an expensive lawn ornament.

If I'm being dumb feel free say it Lips sealed
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nyet
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His issues had nothing to do with crossflashing IIRC
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ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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