You know, I hear that, but I have used them on probably a dozen different kinds of cars, trucks and motorcycles and never had a problem with the MAF. I have had one on my 996 for about 30K+ miles and only cleaned the MAF once during routine maintenance with no problem. I am sure that there are those that over oil and create the problem, but I clean them often and well and oil them just as K&N advises and have been very pleased with them. I could be wrong and the boxster may be more prone to having a problem than any other vehicle, but I have to try it and will report back on results. I have one coming and it fits both my o4 boxster and my 08 boxster so I will try it in both.
