engine management light has come on my 02 wrx,anyone know y this could be as everything seems o.k on the car?
How do i reset?

 

I reset mine using a laptop with ecuexplorer installed, im not sure there is an easy way to reset newages.

You will need to find the error code first, usually its one of a few sensors that has failed.

 

For New Age's you need acces to a PC/laptop with a public domain prog like Romradier nstalled, then the computer connect to the under-dash OBDII port via a OBDII connecting cable. You tthen use the prog to perform the reset to the ECU...

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(Too slow again)