I looked very closely at all of the available intakes and decided to go with the K&N drop ins and HPS post MAF pipes. I think it gives me the best of both worlds. Like has been stated, long tubes seem to give more power at high rpm's and short tubes have the problem of picking up excessive under hood heat. I have installed the Stillen CBE and combined with the intake that I described above my "butt" dyno tells me that I am producing more horsepower. It may be the placebo effect, but I know that others here have seen real gains with similar setups. I know that my Z certainly sounds better.
I have a feeling that the gains that I would pick up from installing a long tube intake at this point would not be worth the expense. I intend to get some HFC's at some point and from what I read here that will give me more bang for the buck. Unless you are going for a better looking intake, which is a valid reason to add an aftermarket unit, I would just add the drop in's and see if you are satisfied with that.
AZ
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AZ Roadster
'09 Base|Chicane Yellow|TSW Nurburgrings|Stillen CBE|Eclipse AVN726E In Dash DVD/NAV|Clear Bra|H&R Spacers 15/20|Hankook Ventus V-12's 275/35 & 305/30
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