Originally posted by PA 3L SVT:
I saw a consistent 3-4 MPH increase in trap speeds just after installing the KKM I had. Similar weather, similar altitude, two weeks apart. I only gained about 0.1 seconds in ET.
The fact that I was running traps on a 75 degree day with the KKM that were only rivaled on a 45 degree night with the stock airbox at a better track and K&N drop in says there is a measurable gain with an open air filter, almost completely at top end/high RPMs.
Now imagine if you ran w/KKM on the 45deg. night. I personally know, and I'm sure many can agree, that heatsoak makes one hell of a difference. As an example I ran a 15.1 @92 w/Large Cone AFE Filter on probably one of the worst least maintained track surfaces in the country and as I was able to do 5 back-to-back runs I found my times kept on dropping with each run until it dropped to a miserable
15.8@88. That's a 7-tenths/4mph drop from my initial run, why, because of heatsoak. So how did I find this to be so? Well I was able to let the car sit for about 30min. than went right back out and nearly ran an identical run to the first one. So though an openfilter has some benefits there are definate cons to it, that being heatsoak. With a thick plastic Heatshield Box that seals to the hood via rubber weatherstripping, that should help eliminate if anything, inconsistant performance.
