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Stock intake with Big Turbo

OffTheWall503

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#1
Who here is running a stock intake on their big turbo setup? I've seen that our intakes are supposedly rated to 350+ HP, but I've heard concerns of the stock intake hose collapsing on bigger turbo setups.
 


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flagstaff
#2
I've gone back and forth between stock and the map intake. With a gtx2860, theres not a difference I can see on v dyno. I have a couple 2" holes drilled in the stock box though.
 


Hijinx

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#3
I ran the stock box on my car until a few months before my engine build. When I installed it, I did back to back logs. There was no difference. I bought it for the built engine, but decided I'd test it out. That data is somewhere on this forum. [MENTION=2886]FearTheSnail[/MENTION] ran 11.9 on the stock box.


Some Guy On The Internet
 


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OffTheWall503

OffTheWall503

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Thread Starter #5
Stock box, meaning the tube was modified? Or a high flow silicone maybe?

-Matt
 


Hijinx

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#7
Turns out that I did not recall correctly. Forget everything I said about Fear on the stock box lol.


Some Guy On The Internet
 


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OffTheWall503

OffTheWall503

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Thread Starter #11
I've heard that boost generally has increased with an intake. If the flow isn't better, I wonder why the boost pressure increases, even if it is slightly.
 


shouldbeasy

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#12
Boost pressure increases as it CAN flow more air.

Same thing happens with my supercharged 4Runner - it ends up sucking through a straw with my snorkel so I opened up the intake with a marine application Deck Plate (6"). When closed I max out at 7 psi or so, with it off, 8.5psi.

It would seem that the stock box is fine for a 'stage 3' car (I hate stages...) but if you go with a bigger turbo then it can become a bottleneck of sorts. Albeit, not a huge restriction.

I think a well made and well engineered airbox is the only upgrade - an Injen style intake (and I only pick on them as it was the first to come to mind) doesn't offer any performance gains at all.
 


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