Hey someone can help me out with this. I got p0171 and p0174 in my IS 01. I did clean my MAF sensor first and then i end up changing it. but with the new one i got the same codes faster than when i got my original MAF. Always the lights comes up after i drive for around 36 miles. but with the new one in less than 15 miles the cal came up 3 times. after reset it using an obdII scanner.

Any idea? is the new one bad? or is something than i'm missing?