[Techno Duck]

Its amusing that this always becomes an argument.

The first bottle neck on the intake for the 8v n/a is the AFM. Then i would think its reasonable to say the next bottle neck is the cam, followed by the actual cylinder head design.

What the article for the 968 is saying is that the bottle neck is the airbox. ITs evident because only about half of the filter is being used if you look at the dirt patterns on the filter. Remember that the 968 does not use the prehistoric AFM, but rather a Bosch hotwire type MAF, basically the same exact thing that FRWilk was working on for our cars and thats offered by that company out of the UK.

I wasnt going to bother posting again just to reiterate this point, but ill squeeze it into this one. PLENTY of people have dyno'ed the effects of drilling out the airbox on the 968 and done before and after pulls on the same dyno (although on different days) and all have showed anywhere from 8-10hp and 7-10ft-lbs as i said in my first post. Look around on the 968 forums and you will find what im talking about. I agree that different testing conditions can have an effect on HP readings, but that difference is enough to tell me that as long as the air temp charge didnt go from negative 0*F to 100*F then its reasonable to say there is actually a different being made. That goes to say if you post a before and after dyno of something that increased your peak power by 2-5hp...now thats probably because of different testing conditions.

And regarding the service bulletin for the breather hose on the airbox, yes it does exist. Infact i have a copy of it at home and ill be sure to make a scan of it when i get home on friday. Have i deleted mine? No,thats because i see no reason to because i do not run the top portion of the belt cover. Dont even get me started on that debate.