So i bit the bullet and purchased all of the individual parts from camelback toyota for my TRD intake. Total was around $230. My only real concern was the increased intake noise people have pointed out. I was pleasantly surprisesd. No increase noise is heard down low, on a little in mid range, but up high you can really hear it. It sounds good, nothing too crazy, but i can see why they wouldn't include a setup like this stock. I didn't really notice any power differences, but my 4runner usually sits in the garage for a week or two at a time, so i can't make a great comparison.
I was curious aobut the difference in airboxes and whether the stock bottom airbox could be used with the TRD top, so i took some pictures and measurements while it was apart.
Profile difference of the top of the airbox along with the difference in the location of the hole leading to the engine intake.
TRD airbox outlet
stock airbox outlet
The airbox bottoms. The TRD lid will NOT fit on the stock bottom, mostly due to them being clamped on opposite sides.
TRD is on the left, stock is on the right
stock airbox inlet. The shield is most likely there to help shield water and debris from getting into the airbox as easily from the wheel well.
Stock airbox inlet, shield/duct removed. Notice how it necks down the airflow, almost like a venturi
Same intake, but from inside the airbox
TRD airbox inlet, before adding the inlet.
How the TRD air accelerator will look when installed.
Just some observations i saw and figured may be interesting to others. Is it worth the money? Probably not. I like the sound though. I am curious to see how quickly the airfilter gets dirty, the stock airbox already had some sand in the bottom and i'm at 4900 miles, and i'll be interested to see if the air restriction gauge is beneficial. I used the OEM air filter BTW.
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