Intake plenum and 911 throttle body

[Jgkram]

I have to start by saying great work! But you already know that. I personally prefer the look of the stock connections and corrugated tubing. For me, the hose clamps detract from the look. I guess it ultimately depends on the complexity and cost of making it connect to the stock fittings. After all, who really sees this part of the car anyway.

By the way, I assume the design does not incoporate a “splitter” to separate the air flow to both intakes. First, would you even recommend doing something like that. And second, if so, how would you recommend attaching a splitter?

Ready in March I hope?

[Gelbster]

I suggest making it most likely to pass the visual Inspection for Smog Test.Yes, I know it is unlikely the average Smog Tech would know what to look for but if you ever had to go to a Referee it may be an issue.
"I might make one modification to the plenum, to keep the stock AOS tube.

What do you guys think ? Keep the sotck AOS tube with quick fittings, or replace it with a longer lasting, cheaper to replace but not as clean looking silicone hose ?

I like the silicone hose for it strength, but it doesn't look as clean as the stock installation with the plastic hose and Y fitting."

[Terryg]

What do you guys think ? Keep the sotck AOS tube with quick fittings, or replace it with a longer lasting, cheaper to replace but not as clean looking silicone hose ?

Keep the stock AOS

I see there is no price on your website Ben, any idea how much and when?

[Ben006]

I’ll try the silicone hose with spring clamps instead of hose clamps, that way it will look cleaner.
The first batch will be with silicone hose until I test the other solution

They should be available early March, for around 450€ with the complete intake tube !
It’ll be almost a drop-in kit !

Ben.

[Tomikaze]

Dyno Results

[Gelbster]

Originally Posted by Tomikaze

Dyno Results

Two more : Smog Test.
If this mod or some boy-racer stickers get you sent to the Referee .......
Let's try to fly under the Smog radar?
Helping the AOS and SAI issues would be a great bonus.

[Terryg]

Originally Posted by Ben006

I’ll try the silicone hose with spring clamps instead of hose clamps, that way it will look cleaner.
The first batch will be with silicone hose until I test the other solution

They should be available early March, for around 450€ with the complete intake tube !
It’ll be almost a drop-in kit !

Ben.

Look forward to that, currently working on exhaust and now broke so timing may be good.

[Ben006]

No dyno results...

Two reasons :
-It's quite hard to find a dyno around here
-I don't have enough time to conduct such a test... it already took me weeks to find the time to fit it on my Boxster !

Though, I bet you won't need a dyno to feel a difference. It's big enough to be felt by anyone, even without a tune.

I understand that for some, this is not enough... so I bought a complete 986 intake system, and I'll do a comparison of the pressure drop across it with the stock plenum/TB, and the carbon plenum + big TB.

We'll see if I can show significant results this way or if I just bought some expensive wall decoration ahah.


Ben

[Cunningr]

Originally Posted by Ben006

No dyno results...

Two reasons :
-It's quite hard to find a dyno around here
-I don't have enough time to conduct such a test... it already took me weeks to find the time to fit it on my Boxster !

Though, I bet you won't need a dyno to feel a difference. It's big enough to be felt by anyone, even without a tune.

I understand that for some, this is not enough... so I bought a complete 986 intake system, and I'll do a comparison of the pressure drop across it with the stock plenum/TB, and the carbon plenum + big TB.

We'll see if I can show significant results this way or if I just bought some expensive wall decoration ahah.


Ben

Looks great, but could you clarify if you used the 83mm or 74mm throttle body in the final application. I read back and I know you started out with 74mm. Thanks.

[Ben006]

Two reasons :
The 83mm TB is huge, and is hard to fit underneath the 986 cover. And requires more than just the plenum to fit, which would make the kit more expensive.
With the stock airbox, it becomes a limiting factor way before the 74mm TB, so unless one fits a 987 airbox, it's not justified to pay extra for nothing more.

Soooo, I'm a bit late on schedule ... But they are finally DONE !
Yes !



The glue is curing, one last sanding inside, and DONE, just have to pack them and ship !
I'll contact all of you that have contacted me for one.
I'll take care of selling the first batch, so if you want one -> PM

If you want to hear how it sounds :

It's mostly intake noise, stock muffler !


Ben

[Ben006]

Here is the complete kit :


8 left



Ben

[Ciao]

Originally Posted by Ben006

Here is the complete kit :


8 left



Ben

To clarify does this kit use the original TB (74mm)? How much for the kit in dollars ($) shipped?

[Ben006]

It does use the 74mm throttle body, which is not the original 986 TB (68mm).
Price with shipping to the US in USD is $540.
Price is based on 450€ base price, and change rate change everyday (and paypal has its own rates...) so $540 is an indication.

Ben.

[PaulDash]

Is there a similar solution for the 2.5 engine?

[Ben006]

Nope, not from me yet :/

I should do a before/after dyno comparison soon !

Well... when my car comes back from the lift and passes inspection ...


Ben

[thefunkygibbon]

so 4 years on and it still isn't available to buy or have any dyno results etc? crazy

[maytag]

Originally Posted by thefunkygibbon

so 4 years on and it still isn't available to buy or have any dyno results etc? crazy

It's only crazy if you think this is what he does full time, for a living.
It's not. He spends the time (and money) here and there when he can. Which isn't a lot, since he's also a full time student.
His work is absolutely first rate, and he's been very helpful to the community.

Sent from my SM-G970U using Tapatalk

[thefunkygibbon]

Originally Posted by maytag

It's only crazy if you think this is what he does full time, for a living.
It's not. He spends the time (and money) here and there when he can. Which isn't a lot, since he's also a full time student.
His work is absolutely first rate, and he's been very helpful to the community.

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ah ok i did not know about his background. I clicked on his website, and given that he has a company name and a proper website, the natural conclusion was that this was a company doing this. apologies for any offence, Ben.

[Ben006]

Originally Posted by thefunkygibbon

ah ok i did not know about his background. I clicked on his website, and given that he has a company name and a proper website, the natural conclusion was that this was a company doing this. apologies for any offence, Ben.

No worries
I do have a company, but I still work 8am to 6pm as a Porsche tech, so I can only work at making my stuff around an hour per day... that's not enough to do everything I want unfortunately :/

And add to that three project cars and time to socialize and take care of my girlfriend ^^

It's a fulfilled life ahah

Today I finally got the chance to take the Boxster on the track !
This time I came prepared and had no oil problem, so I enjoyed four 20minutes sessions of fast driving ! Keeping the engine below 6000rpm, I still kept up with way faster cars : 981S, 718, 718GTS, E46 M3 !
A wonderful day !

[maytag]

Originally Posted by Ben006

No worries

I do have a company, but I still work 8am to 6pm as a Porsche tech, so I can only work at making my stuff around an hour per day... that's not enough to do everything I want unfortunately :/



And add to that three project cars and time to socialize and take care of my girlfriend ^^



It's a fulfilled life ahah



Today I finally got the chance to take the Boxster on the track !

This time I came prepared and had no oil problem, so I enjoyed four 20minutes sessions of fast driving ! Keeping the engine below 6000rpm, I still kept up with way faster cars : 981S, 718, 718GTS, E46 M3 !

A wonderful day !

Which track did you go to, Ben?

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