Intake plenum and 911 throttle body - Page 21 - 986 Forum - The Community for Porsche Boxster & Cayman Owners

square-root · 06-30-2018, 04:53 AM

Quote:

Originally Posted by Ben006

True !
But if I remember that’s quite an expensive upgrade !

Very true, but if someone wants a solution, its there :-)

Ciao · 06-29-2018, 05:35 PM

jd,

Good job! I'm inspired to replicate your project

Ben006 · 08-13-2018, 11:17 AM

More coming soon

square-root · 08-14-2018, 07:28 AM

Quote:

Originally Posted by Ben006

More coming soon

Wow! Looks amazing.

Ben006 · 08-16-2018, 12:08 PM

I received it today. It's just the prototype, so there are a few things that will need to be looked at. But man it looks and feels good ! That thing will handle anything you throw at it !

Ben006 · 10-28-2018, 05:41 AM

So... almost done !

Robert986 · 10-29-2018, 11:27 PM

Quote:

Originally Posted by Ben006

So... almost done !

That is beautiful! Is this the final product?

Ben006 · 11-12-2018, 11:41 AM

Quote:

Originally Posted by Robert986

That is beautiful! Is this the final product?

The carbon fiber part yes, the plastic flange no, it'll be slimmer and better looking

Quote:

My question is, can I change the headers, cats & mid-pipes, plenum, throttle valve and air box without sending the ECU into protest via check-engine light? My plan is to retain the stock outward appearance and not compromise practicality. If it's possible, I'll commit, if not I'll continue to live with the strangled 250HP.

Yes you can do all that without a tune and without getting a CEL.
Install cheaters for the secondary O2 sensors if you're going cat-less, that's all!

Ben

930turbo · 11-14-2018, 01:55 PM

I've done a little research on the mods I posted about earlier. It looks like all of them are a long slide for a short gain; headers & exhaust for $4000-ish for 6HP, intake mods for $1000-ish for 6 more HP and a tune for $800 for about 6HP more than that. 18HP is a lot but $6000 is a lot more than that. Can anyone share their experience with these upgrades? What's the seat-of-the-pant dyno results? Should I just leave it alone? There has to be something- or a combination of things - that softened the potential of the 3.2 S, the specific output is considerably lower that other models of the same era.

Dave80GTSi · 11-14-2018, 03:15 PM

Quote:

Originally Posted by 930turbo

headers & exhaust for $4000-ish

That's a crazy high estimate for those particular mods. Divide it by four-ish, perhaps even more if you buy used as I had suggested to you earlier here.

To illustrate further, here's another idea for your consideration: For Sale: Fabspeed 200-cell 986 Header – New and Never Used

By the way - Out of respect for Ben's thread, you would be better served to start a new thread on your topic, rather than to continue to be off-topic here. You will likely gain a lot more traction and interest.

maytag · 12-01-2018, 09:41 AM

Quote:

Originally Posted by Ben006

So... almost done !

Ben, is this for sale yet?

986968 · 12-20-2018, 12:06 AM

Quote:

Originally Posted by maytag

Ben, is this for sale yet?

Is it for 82MM GT3 TB? Can it for into 996?

maytag · 12-20-2018, 09:58 AM

Quote:

Originally Posted by 986968

Is it for 82MM GT3 TB? Can it for into 996?

I'd suggest read the thread. all is revealed within..... ::spreading arms in an expansive way::

NewArt · 11-14-2018, 02:16 PM

You might take a look at my YouTube channel: https://www.youtube.com/user/12shoes2
I have covered all these mods in my videos and the result was quite noticable once I had everything in place and a tune done. I wanted to get a dyno done but unfortunately I threw a rod bolt on my last track day this fall and now I need a new engine. This engine failure had nothing to do with the mods that I made but stuff happens at the track.

Lapister · 11-14-2018, 03:21 PM

I can't speak for the exhaust/header gains as it seems like a small HP gains for the $$ invested (not cheap) but for little wrenching and small investment of couple hundred bucks you can do the 987 airbox, 996 TB, and 997 T as a single mod and I think you would be quite surprised. Power gains throughout the rpm range and wider smiles at least for me. Butt Dyno says to me about 10 -15 just my opinion. It's a different car and no Cels. Passes smog no problem. Bang for buck 👍 Hardest part is 987 airbox

Ben006 · 12-24-2018, 09:29 AM

Not for sale yet, I'm still waiting on that intake tube !
It's been more than a month now...

Ben006 · 01-02-2019, 11:13 AM

I finally received the temporary intake tube ! I will be fitting the plenum on Saturday

OOOH I'm excited

Ben006 · 01-07-2019, 12:21 PM

So... You know me by now ?
Nope, it's not fitted yet !

Though, the tubes are fitted !

Very happy with the result !

Dare I say it will be fitted this weekend ? hummm...

Ben006 · 01-26-2019, 10:31 AM

OK ! Late again, but it's IN !!!!

I replaced the K&N filter too...

I haven't driven it yet, just parked the car...
I know I'll have to wait a bit for the DME to adap to it, but I already know this is going to be awesome !

Fitment is perfect, everything goes in without trouble, the intake tube fits (very close, but it fits without touching !)
I've taken pictures of the install so I can have step by step instructions to include.

It's a prototype, so some things might change for the final version but it's mostly there

Ben

Ben006 · 02-12-2019, 12:07 PM

Quick update !

I've hit 600km with the new plenum and throttle body.
The DME has now fully adapted to the new parts, and I have to say that I love it !

First, the sound... I still have the stock muffler, and there is more intake noise than exhaust noise !
I have a RHD Boxster, so I'm driving on the wrong side... the airbox sitting in the passenger side, previously I was not hearing much intake noise...

Now ? I love it ! The sound is louder with a higher pitch, without being annoying ! It sounds way better throughout the rev range.

In terms of performance, it took a while to adapt (no tuning done for now) but now it's a blast, with a very noticeable improvement from 2000rpm and up !
The torque dip between 3 and 4000 rpm feels better than before, the engine is pulling very strongly from down low all the way to the redline !
If I should make one complaint, is that it's a bit more linear now if you floor it from down low.

I'll try to get it tuned soon to see how much can be extracted from it, but for now, it's already a very fast 986 !

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.

Ben.