Originally Posted by HenrySacto

Hi there,

I recently replaced the factory Air Intate system with K&N Air Intake (FIPK 57-9015-1) for my 2001 4Runner. Two days later VSC off, VSC Trac and Engine Light came on. I'm not sure if these lights came on because of the new air intake or it is an unrelated issue. I called K&N and they suggested that I unplug the negative battery for at least one full hour and see if the light will be gone. I did as suggested and so far so good the lights are gone...I'm hoping that they are not coming back. Have any of you put K&N Air Intake in your 4runner? Did I do something wrong? Do you have any suggestion as to what may have gone wrong? I'm worried that there might be a bigger problem in the future.

Thanks for your help!!
Henry