just put in a used cold air intake i got from a friend today, he recommended it over the stock one.
i have an 02 wrx bugeye. after installing the intake i went to start the car and the car would idle for about two seconds then shut off. if i hit the gas after starting it up it would rev a little bit but it would still idle down liike its dieng and then shut off. WHYYY is this happening ????

 

1) intakes not recommended
2) your maf is probably on backwards

 

installing an intake without any form of compensation is asking for trouble. the only intake that will not change much about how the car runs will be the spt ram or the cobb version.

 

sensors..... recheck them...

 

alright well thank you

 

Stock MAF sensor tuning isn't setup to deal with different flow velocity from an aftermarket intake, which is why tuning is needed. There is probably nothing wrong with the sensor, it's the stock ECU tuning.

Look into a Cobb Accessport or sometihng along those lines; there are off-the-shelf tunes available for light mods like your intake.

I do think the problem you're having with the engine shutting off is something more than just the different intake though, I think you caused another problem with something during the install.

 

thank you butt yeahh i think i did cause another problem.i think i burned the maf sensor. would removing my battery before installation have anything to do with it?

 

No usually that wont cause a problem. But you still could have screwed it up.
Are you sure you put it back on right and plugged it in?
Also what intake are you running?

 

im not sure ill ask my friend that i got it from all he said was that its a cold air intake. yeah i put it back on right it looks perfect. i might have the maf sensor on the wrong way ill double check. the bad part is that we had the car at my friends garage when we did this so its been sitting there ever since.

 

If its some noname cold air intake its gonna make the car run like shit. But not that bad the car would do what you are decribing if the maf is unplugged or backwards. The plug side should be facing the front of the car.
Honestly your better off putting the stock airbox back on and buying a quality intake like a K&N or the SPT piece.