Originally Posted by Leonardo
If the MAF sensor wasn't diferent on the STi, I could have used my K&N Typhoon from the LegGT!!!
True. MAF Sensor on the 2008 WRX and STI are the same, but they are different than the WRX/STI/LGT of earlier years - smaller, fits into a smaller hole, and a totally different mounting flange. Stock intake on 2008 WRX/STI is also now 70mm diameter (like the LGT).