it's the intake. many people have the same problems as you. i solved mine through a flash, but like said before another popular option is the hks eids.

 

ttt

 

It's NOT the intake, I have an intake in the car and i don't even need it tuned for closed loop operation anyway. IT's probably a big vaccum leak or a crappy stock bov. The stock maf is located right in between the turbo and the air filter. There's a honeycomb right after the filter. Right behind it is a small wire you'll see. Just get some rubbing alcohol and some q-tips and gently clean off the wire.

 

I hope you didn't mess up the MAF while installing the intake. Also, check out the BOV.

The first day I got my Evo I got my intake installed and did not have any problems...

 

i have an aem with map conversion and it is stalling again. It did this before and the dealer replaced the iac valve under warranty and it was fixed for about 6 months and there it is again. Stalling. The dealer told me this is a common problem that the valves go out often but i don't see many on here that have been told the same as me. Anyone else had this valve go bad?