₦airaland Forum

Can brainbox be responsible for my 1999 sienna van to be misfiring with poor acceleration, loss of power and poor fuel efficiency? I have changed plugs and fuel pump several times but no improvement. I have even changed mass airflow sensor, air filter, fuel filter no changes.

Please my sienna van has similar issues. It has poor acceleration, loss of power, jerking and poor fuel milage. I have changed fuel pump severally, changed plugs but no improvement. The car also misfires. Somebody advised me to check the brain box or gear box. What do I do?