Stock airbox intake flow (pics)

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I would have went 987 airbox but the difficulty in fitting one in swayed me away.

I'm still working on my new setup but for now its an aluminum airbox with a cone filter inside, a snorkel attached on the outlet, fed to the side vent. I cut off the snorkel piece on the stock airbox and used it as a block off plate and used foam tape to seal any possible gaps.

So far I've been seeing 20F above ambient(60F average days) in city and 5-10F on hwy.



My mods now are 3 inch intake tubing(airbox inlet/outlet is 4inch) 997 throttle body and plenum. Headers and catback.