I just installed a TRD intake. I bought the parts individually, cheaper that way by about $100. There has been a raging debate for decades about the effectiveness of aftermarket intakes. Many people claim they make no difference other than noise. So here's my take: It cost all total with shipping $255.33 (I already had an AEM dry filter). Installation was super simple. Yes, it howls at the upper end of the RPMs when my foot is in it. Throttle response right off idle is noticeably better. Bear in mind that I do have a Peddle Commander, so that is a big part of it, but I had that on since the first week of ownership. My around town mileage seems to be better. During normal driving, I can hear what the engine is doing and I like that. It pulls a little harder than it did before at the important RPMs, idle to 3k where we do most of our driving. Bottom line is I'm pleased with it and I'm leaving it on. Here's the breakdown on the parts ordered through BAM Wholesale Parts. I will post more when I have more miles on it and after a few tanks of gas. Next up: removing the redundant cats, restrictive Y pipe and boat anchor muffler in favor of a Flowmaster 70 series (I love the way these sound!)
PTR03-35090-AA TRD Air Intake Lid and Hardware $76.15 1 $76.15
PTR03-35090-AF TRD Air Intake Lower Air Box $58.46 1 $58.46
PTR03-35090-AC TRD Air Intake Flow Accelerator $6.35 1 $6.35
PTR03-89100-AA TRD Air Intake Tube $27.37 1 $27.37
PTR03-89100-AB TRD Hardware Kit, Air Intake System $32.68 1 $32.68
PTR03-34071 Service Parts, TRD, Air Flow Monitor, Cold Air Intake. Air Intake System. $18.00 1 $18.00