Hi guys

i'm new to 4g63 and other jdm need your help. I have an evo4 jdm and i have swapped evo8 ecu in. The car used to run ok but after removing egr im experiencing some bad issues. first car wont idle normally but i have installed tephramodv7 enabled rear o2 sim and let it to run some time recorde ltft of 3.3% which seems to be in normal range. now when it idles its keeping afrs(aem uego logged through ecu) close to 15.6-16 and the same time stft is abou 5-6%. i dont like how it idles but its better now after thphramod install.

the second issue is even worse: sometimes when i push gas pedal on low gear and rpm it wont rev for a bit, fills like its cutting fueling or ignition and later it suddenly revs and operates normal.

my rom is 96530706, i also have aem boost gauge wierd to port 75 for logging. all this issues arise after i have connected boost ad afr for logging and not sure what to check now.

I'm new to this motor and need some help. below you will find some logs which I have logged on both tephra and stock roms(not sure which one is what).


http://datazap.me/u/taron/evo-bad-idle1?log=0&data=6-17

http://datazap.me/u/taron/badidle123?log=0&data=6-17

hope you are familiar with datazap))
rom file is attached

thanks in advance

 

bump for help ((

 

Wrong forum. You should try the ecu tuning forum.

 

evo 4 maf and evo 8 maf are programmed different. I swapped in an evo 4 maf into evo 8 tuned car and it needed all sorts of tuning changes to the fuel map.