Reset/reflash ECU when aftermarket airfilter and modded exhaust?

[CBR250]

I installed a K+N airfilter and also have modified the stock exhaust with some small holes drilled in the back.

CBR250 which I believe runs a closed loop from ECU and O2 sensor.

Should the ECU be reflashed by disconnecting the battery by 5 minutes to maximize (small) changes in the breathing system?

 

[mikerust]

Do a couple of plug chops to see if the mixture is lean. If so you can buy piggy back devices for about B3500 to richen the mixture.

A cheater box for B1200 maybe good enough for you. http://www.jrmotor.com/index.php?lay=boardshow&ac=webboard_show&No=1294037&WBntype=3 Fools the ECU into thinking the temperature is colder, altitude is lower etc. so the ECU richens the mixture.

 

[CBR250]

^ Thanks. Interesting. I remember seeing that years ago and had forgotten all about it. Something I'll have to read up on. I didn't know that's what it does.