Well ive been having problems with my car stalling and I finally took it to toyota and they were finally able to replicate the problem. Turns out it was caused by a vacuum leak. Turns out that the factory intake has three hoses going to it, the main one that they leave in there which im still not sure where it goes. Theres one tube thats part of the EVAP system that they completely rip out and then one that goes to your valve cover that is just loose. So if you have a performance intake, it means that your engine is sucking unfiltered air into your cams and into your EVAP system. I will be doing a thorough thread with complete pics once the picture service I just set up starts working.
This site is a little bit more easy when using pics
http://matrixowners.com/forums/Anoth...ar-t61142.html