We all know you can reset the computer by disconnecting the battery, but I can't figure out if the pumping of the brake pedal 20 times with the key in the "on" position has the same effect of resetting all the fuel trims etc....

anybody know what the differences are?

 

Taken from: https://www.rx8club.com/series-i-tech-garage-22/ecu-clear-reset-27548/


here are two reset procedures, one for the NVRAM and the other for the KAM. Neither will erase your radio presets and such like the method SpooledUp7 posted:

1) With the key in the off position, press and hold the odometer reset button and turn the key to on;
Continue to hold the odo button until the odometer reads "TEST" and then release.
2) Turn the key to off and repeat step one.

This will reset the entire PCM except the KAM which contains the sensor profiles amongst other things. You can reset it with the familiar procedure:

1) Turn the key to on
2) Depress the brake pedal rapidly 20 times in a row until the oil pressure gauge sweeps to halfway and back again.

 

after the s flash you have to disconnect the bat to get a full reset... i dont know why..

i know this because i used to use the above to reset my ltft... now the only way i can do that is with a bat disconnect..

beers

 

^^ Correct. Since "R", actually.
The fuel trims survive both reset techniques.

 

sorry...

yep thermal blanket kills. reset the easy way... i went through r and s so fast...

i hope i get to stay with t for a long long time..

beers

 

I didn't know that...hmmm...so that means if you drive like a granny...and reset it the way in the link...it doesnt change the fuel trim back to factory?