could this be caused by bad spark plugs? I also know my maf has been reading low, but i had the maf tables readjusted to bring the readings more into line. Any suggestions?

 

i've asked this question before and gotten no good answer. i'm thowing the same 2 codes right now. hopefully someone will have an answer

 

got the code also, 20-30 miles after removing the screen out of the MAF

 

P0172 and P0175 are fuel trims rich, banks 1 & 2. Spark plugs won't do that.

If you know your MAF is reading low or is modified in any way, then the MAF needs to be re-calibrated.

 

i know the maf was origionally reading low, but i had a knowledgeable tuner help me get it much closer than it was previously, yet it never threw a code before, only after... i cleared the codes, maybe they will stay gone...

can the problem be fixed with VE tuning?