evoredy
10-19-2008, 05:30 PM
EDIT: added 5.10
cross post from evom:
hello all,
I have completed porting bez's map-to-maf patch to the 94170015 rom. i am happy with the results.
http://img75.imageshack.us/img75/5980/mappatchpo2.png
i have modded tephra's 94170015 v5.8 rom and have kept all of his functionality as the MAP patch is pretty transparent.
what this does:
based on what i can tell, there is a map calibration table for your current sensor (mine is and 03 EVO 8 MDP so i have fudged some values that work great lol). it is used solely for this patch. there is a MAP temperature compensation table also solely for this patch which i have kept flat as per bez's original (probably will come in handy when going MAP only i dunno). finally there is a map to maf offset which i have set to 128 (int16/big endian/still need to figure out exactly wtf this does lol) and a map to maf linear VE Table which i have set to use MAF during the latter ranges (noted value as '255').
basically, when MAP/MDP reading is vacume, the ECU will use MAP/MDP for fueling. you can prabably conclude this by my settings. this is great because I have different IC piping/Agency Power MAF pipe from hell/k&n cone/gt35r/272 cams/injectors/etc etc.
i'm going to loosley conclude that these settings will work great on stock MDP'd evo 8's (94170015 variant) with any maf pipe/intake setup and not cause the dreaded idle stumble. remember, this is in the alpha stage of testing and may not produce my results on another evo. I have driven around a lot and tested this out. also, i have verified MAF is working during boost with my WB02. I have not logged the memory addresses and hope someone with time can and create better tables/explanations. patch is simple and i have not disabled any maf error routines/so you cannot unplug it just yet.
SETTING THESE TABLES DIFFERENTLY WILL MAKE YOU RUN LINEAR MAP AND THUS LEAN UNDER HIGH BOOST SO DON'T TRY TUNING THIS WITHOUT A WB02/LIVE GAUGE :updown:
here are the addresses:
FFFF898C is MAF value emulated by new MAP Routine
FFFF8988 is RAW MAF VALUE (sub_B8EC)
FFFF8984 is a it after filter (i'm guessing MAP or MAF depending on offset/VE table)
to keep a good control, use ecuflash 1.39.2192 with the included full 94170015.xml file (includes tables/values/periphery/leanspool/some useful stuff)
take care when using this and PLEASE transfer all of your settings over as even i forget to do so sometimes. again, make sure to have a WB02.
cross post from evom:
hello all,
I have completed porting bez's map-to-maf patch to the 94170015 rom. i am happy with the results.
http://img75.imageshack.us/img75/5980/mappatchpo2.png
i have modded tephra's 94170015 v5.8 rom and have kept all of his functionality as the MAP patch is pretty transparent.
what this does:
based on what i can tell, there is a map calibration table for your current sensor (mine is and 03 EVO 8 MDP so i have fudged some values that work great lol). it is used solely for this patch. there is a MAP temperature compensation table also solely for this patch which i have kept flat as per bez's original (probably will come in handy when going MAP only i dunno). finally there is a map to maf offset which i have set to 128 (int16/big endian/still need to figure out exactly wtf this does lol) and a map to maf linear VE Table which i have set to use MAF during the latter ranges (noted value as '255').
basically, when MAP/MDP reading is vacume, the ECU will use MAP/MDP for fueling. you can prabably conclude this by my settings. this is great because I have different IC piping/Agency Power MAF pipe from hell/k&n cone/gt35r/272 cams/injectors/etc etc.
i'm going to loosley conclude that these settings will work great on stock MDP'd evo 8's (94170015 variant) with any maf pipe/intake setup and not cause the dreaded idle stumble. remember, this is in the alpha stage of testing and may not produce my results on another evo. I have driven around a lot and tested this out. also, i have verified MAF is working during boost with my WB02. I have not logged the memory addresses and hope someone with time can and create better tables/explanations. patch is simple and i have not disabled any maf error routines/so you cannot unplug it just yet.
SETTING THESE TABLES DIFFERENTLY WILL MAKE YOU RUN LINEAR MAP AND THUS LEAN UNDER HIGH BOOST SO DON'T TRY TUNING THIS WITHOUT A WB02/LIVE GAUGE :updown:
here are the addresses:
FFFF898C is MAF value emulated by new MAP Routine
FFFF8988 is RAW MAF VALUE (sub_B8EC)
FFFF8984 is a it after filter (i'm guessing MAP or MAF depending on offset/VE table)
to keep a good control, use ecuflash 1.39.2192 with the included full 94170015.xml file (includes tables/values/periphery/leanspool/some useful stuff)
take care when using this and PLEASE transfer all of your settings over as even i forget to do so sometimes. again, make sure to have a WB02.