I am going to agree with Blue and Matt... I think there is prolly another issue somewhere that is causeing KR. I run a very similar intake but without the bend... I even had my tuner check the MAF frequency to make sure my MAF numbers were not skewed and they were fine. I dare say it has little to nothing to do with the intake.. But like said about remove all the stock airbox for better/cooler air flowing to the filter..