im having problems with my idle i just recently got a a new intake and now my idle sputters like it revs up then goes down again what do i do? now my check engine light is on.

 

Disconnect the negative side of your battery for 10 min. Then put it back on. This should reset your ECU. Then drive your car for 30min. It should be fine after that.
If there is still a problem let us (evoM community) know and we can offer more suggestions.

 

Check if you did install everything correctly. Make sure your MAF is not damaged, disconnected. Reset your ECU just like Danno said. It usually takes 100 miles before your ECU will learn how to work with your new mod.

 

Did you damage the MAS sensor?

 

And for the 30-50 miles that you drive it, drive it reasonably because if you are going to red line and full throttling it then your ECU will pick up on that as "normal driving" and it can really mess with your gas milage and your idle revs.

 

"Disconnect the negative side of your battery for 10 min. Then put it back on. This should reset your ECU. Then drive your car for 30min. It should be fine after that."

well i tried this and it didnt work bbut i did disconnect both insted of the neg. but ill try this again. thanks guys

 

i would get the code pulled to see what is setting that off. I am having a similiar problem with my idle now. for some reason it has been dipping down to about 500rpm and then jumping back to 750. I cant figure out what the problem is either, it drives absolutely fine other then that.

 

mine started doing this about the same time I put my intake on. Just found out (many months later), that a vacuum line had become disconnected somehow. check every single vacuum connection in there, make sure that their are no open connections anywhere. Found the one on mine, put the hose back on, problem stopped instantly

 

what vac line was it?

 

If its an intake issue there is only one vac. line

 

Sounds like a dirty/damaged MAF

 

^ heres hoping for his sake its not, those things aint cheap.

 

that was posted like a month ago so I presume you found/fixed the problem... if you still don't know what's wrong, connect the maf and enjoy.