im possibly in the market for a tuner for this 04 sti i replaced the motor on. the battery was out of the car for about a week, put this new (used) motor in and started it, it will not hold a idle. i unplug the maf sensor and it holds a idle at 2k. i checked all the lines and connections and plugs and everything is on fine.. im down to the possibilty that it lost a tune if there was ever one on it, and needs a tune now. its a 04 sti with a CAI and a downpipe. thats it thats been done to it.

ive changed the maf and the 02 sensors, still wont hold a idle. so if anyone has a cobb tuner for sale lmk. thank u!

 

since you're in sac, goto either snail or EQ

Snail Performance - Rocklin, CA | Yelp
Equilibrium Tuning - Fairfield, CA | Yelp

 

Travis up at snail has been extremely helpful in my process. I'd recommend him over EQ just on customer service alone.

 

Snail Performance. /thread