Originally posted by DemonSVT: Brad had a large heatshield shielding a large portion of his filter. He also used an insanely long filter that stuck down farther.
The first is a MUST. The second is a skip it. (stick to a filter roughly 2 times your max cfm draw) Too large a filter can actually hurt performance.
The heatshield idea didn't work well. It was removed shortly after I first installed it. The reason for the large filter was because of the amount of dirt the filter would pick up would clog any normal sized filter in a heartbeat. The CAI pipe I used was also way to big for the application, but consistantly drew 1-2 tenths quicker than a normal CAI and 9" K&N filter in the quarter (Gtech) with back to back testing over 6 runs with each pipe. Theory is fine, but real world is better.
Also a note on this or any other CAI (HAI), it will clear itself of heat better with the battery relocated (or even just downsized on a smaller battery tray) and a heat shield blocking the fan air. Autotap scans have shown that a CAI like this one, without the heatshield or bat reloc., still clears the IAT of heat soak much quicker than the MAF/Filter in the *factory KKM* location.
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