Celica Forums General Discussion Engine and Performance Help 2000 toyota celica gts

I have a 2000 toyota celica gts m/t. I am posting today because I have just bought an Apexi power fc and had mwr flash in a map that suited my cars modifications which were: Injen intake, PPE headers. I received my new ecu today and installed it right away. let it idle for 5 minutes with AC off then I let it idle for 5 minutes with the AC on. I then took it for a test drive and it responded beautifully and shifted good. I was just around the corner from home when i came to a stoplight where the car just stalled.. It took a while to get it re-started. I have no clue what I am to do now I should probably use the fc commander somehow??? PLEASE HELP!

I would start by calling MWR on this first to see what they say since they were the ones that flashed the ecu for you. But, if it stalled (more info as to how you drove it would be helpful) then my guess first would be a fuel issue....whether it be pump, filter, or injectors.