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The 16hp would be at the crank.

I like the look of the system because it uses the stock air box and clips into it. I think the hole on the side will be covered up by the stock intake system and will make a proper seal. I also like the dry filter element. Looks good.

 

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Well, it came today. Two hours after receipt, it was on the car. I downloaded the installation instructions before I received it and familiarised myself with the installation procedure, so I was ready to go. The opening in the front is necessary because the filter is larger than the housing on that side. IMO, the quality of the kit is very good and I believe it is well engineered. The shroud is good quality metal and is crinkle powder coated. All in all a well designed unit. As far as sound goes - Reving up with the hood open, you can now hear that open element sucking sound, although it's very quiet. At WOT, sounds pretty much the same, but a wee bit louder. At mild acceleration, it sounds more throaty. It's too early to tell if there is a performance difference. I'm happy with my choice.

My JoeZ and K&N Drop-In Filter is for sale here:

http://www.lexusfforum.com/forums/showthread.php?t=2510

Lou

So the stock air box is untouched and the secondary intake still functions properly?

The intake looks good, I just don't like the opening on the side.