I have to change Filter in my car and i can not decide what filter is better.
opinions please!!!

 

There is a couple of posts that have shown it has no performance benefit. Add this to the fact that Porsche would not warrant MAF failure because i had a BMC, has lead me to go back to stock.

 

I installed BMC filter in my car with a APR tune and exhaust, made no difference in the 60-130 times measured by PBox.

 

We have made over 800whp with a stock air box and stock filter

Larry

 

another vote for stock. that surface area is huge so i dont think there is much improvement required.

the only reason to go to aftermarket is if filters are hard to get in your area. the bmc filter can be cleaned and reused.

 

I would lean towards the stock air filter, stock air filter seem to do just fine and plus you don't want to void your warranty.