01-03-2017, 11:01 AM
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#281
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550 Anniversary
Join Date: Jul 2012
Location: Surrey, UK
Posts: 747
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It's the regular cheap eBay stuff. It's all from alibaba ultimately. Over here it's branded as Toyosport, Topgear, Direnza etc as they place large enough orders to have their label put on or stamped on. Over your side I think this is the same as Topspeed but also resold as various other "brands". Remember only 1 pair of cats for UK and European cars ie no cats in headers. I kept the standard cats which are 400 cell. You call them the rear cats.
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Current: 550 Spyder Anniversary- Carnewal exhaust - 100 cell cats - stainless manifolds - 4" underdrive pulley - poly gearbox mounts - rear lower alu brace - adjustable rear toe links
Sold: 986S - Zenith Blue - 18" Sport Classics - Black Zunsport grilles - Stainless silencer and manifolds - K&N panel - shortshift - M030 suspension - 75mm throttle body - custom 83mm intake - SmartTop - custom remap - MDS underdrive pulley
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09-08-2017, 03:29 PM
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#282
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inveniam viam aut faciam
Join Date: Mar 2014
Location: Arvada, CO
Posts: 440
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So, I ordered up the '04 Boxster S 550 50th Anniversary SE MAF sensor to throttle body hose, along with the "stopper" that was listed, but not shown in the diagram. The stopper was over $25 and just ended up being a plug for an unused port on the hose. IMO, it is NOT worth it if you want to do the same.
Here are a couple of pictures. In the first I have the 987 airbox, the 987 MAF sensor and 986 SE MAF sensor to throttle body hose. In the second picture I also included the 987 throttle body tee, 987 MAF sensor to tee hose, and tee to AOS tube for comparison. As you can see, I have not yet modified the airbox to fit in the 986 chassis.
While it is possible to use the 987 tee, from testing by another local shop shows that it difficult to install due to interference of the throttle body to oil cooler if clocked as on the 987, and also interference with the engine cover if you clock the throttle body so it does not hit the oil cooler. The tee also does not play nicely with the tuning if you actually connect up the vacuum operated flapper, so you would probably just use the tee without hooking up the flapper.
I plan on installing the airbox with the 986 SE plumbing after doing a baseline dyno test, then repeating the dyno testing after installing the airbox, plumbing and 986 SE tuning. The tuning will only work on an '03 or '04 S as they have the M 7.8 ECU. It is also possible to use these parts on earlier cars with stock (or whatever performance tune you have) if you sleeve the inside of the MAF housing to match the original, and use the MAF element from the original air box.
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'03 S, manual, 18" Carrera wheels, PSM, PSE, Litronic, 996 Cluster, +
Last edited by Qmulus; 09-08-2017 at 03:47 PM.
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09-09-2017, 06:38 AM
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#283
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550 Anniversary
Join Date: Jul 2012
Location: Surrey, UK
Posts: 747
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You need either the 996 plenum or the larger one from Cayman 3.4 if you want to go to the 74mm throttle body at the same time.
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Current: 550 Spyder Anniversary- Carnewal exhaust - 100 cell cats - stainless manifolds - 4" underdrive pulley - poly gearbox mounts - rear lower alu brace - adjustable rear toe links
Sold: 986S - Zenith Blue - 18" Sport Classics - Black Zunsport grilles - Stainless silencer and manifolds - K&N panel - shortshift - M030 suspension - 75mm throttle body - custom 83mm intake - SmartTop - custom remap - MDS underdrive pulley
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11-03-2017, 12:04 PM
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#284
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Pathological Tinkerer
Join Date: Mar 2017
Location: Utah
Posts: 197
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Quote:
Originally Posted by Qmulus
So, I ordered up the '04 Boxster S 550 50th Anniversary SE MAF sensor to throttle body hose, along with the "stopper" that was listed, but not shown in the diagram.
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Qmulus, do you have the part number for the SE Maf to throttle body hose? I am having a hard time finding it and I like the OEM look and may look at using it in my install.
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11-12-2017, 10:28 AM
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#285
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inveniam viam aut faciam
Join Date: Mar 2014
Location: Arvada, CO
Posts: 440
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You can find the part number in post 269 by The Radium King, or is it pretty easy to find in the online parts breakdowns. The part number for the "Stopper" is also in one of the later posts by me, but I wouldn't bother getting it. I am sure that you could find something that would fit that is far cheaper than the expensive factory plug.
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'03 S, manual, 18" Carrera wheels, PSM, PSE, Litronic, 996 Cluster, +
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10-19-2019, 02:50 PM
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#286
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Registered User
Join Date: Sep 2018
Location: Philadelphia
Posts: 8
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Finished my 986 to 987 airbox upgrade...pics & instructions
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10-19-2019, 02:52 PM
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#288
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Registered User
Join Date: Sep 2018
Location: Philadelphia
Posts: 8
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10-19-2019, 02:54 PM
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#289
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Registered User
Join Date: Sep 2018
Location: Philadelphia
Posts: 8
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Instructions...
Use at your own risk!
Use at your own risk!
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11-01-2019, 03:05 PM
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#290
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Registered User
Join Date: Jun 2018
Location: NJ
Posts: 26
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Hi, looks like the front engine mount bolts are still on and thus the mount is used as the pivot point. Where do you place the jack to lower the assembly? The differential in the transmission?
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12-09-2019, 12:13 PM
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#291
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Registered User
Join Date: Sep 2018
Location: Philadelphia
Posts: 8
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jack
Used an engine jack with a wood board to give as much support as possibly to the whole assembly. Only really needed to lower it a couple of inches.
PS: If I didn't post it before - be sure to check the wheel alignment when done with this project.
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12-09-2019, 01:28 PM
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#292
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Registered User
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,709
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Great post, I didn't see how you will reprogram your bigger MAF sensor housing?
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OE engine rebuilt,3.6 litre LN Engineering billet sleeves,triple row IMSB,LN rods. Deep sump oil pan with DT40 oil.
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12-11-2019, 07:02 PM
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#293
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Registered User
Join Date: Sep 2009
Location: toronto
Posts: 2,668
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Nice technique!! Were there any precursors to this sequence? Other items to unbolt prior to starting.
I am surprised that the whole assembly can pivot on the front mount and not interfere with the studs
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986 00S
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12-15-2019, 10:21 AM
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#294
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Registered User
Join Date: Feb 2017
Location: Stockholm
Posts: 375
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Great info, I will put in the 987-box this winter..
However I´m also about to change the front engine mount. Do you think that the same trick (lowering the engine to switch airbox) can be done by lowering the engine in the front while the front engine mount is removed during the switch?
I know, I need to get off my computer and get going in the garage..
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12-22-2019, 05:19 PM
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#295
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Registered User
Join Date: Sep 2018
Location: Philadelphia
Posts: 8
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Quote:
Originally Posted by BYprodriver
Great post, I didn't see how you will reprogram your bigger MAF sensor housing?
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Fabspeed will be doing the reprogramming in the spring.
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12-22-2019, 05:21 PM
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#296
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Registered User
Join Date: Sep 2018
Location: Philadelphia
Posts: 8
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Quote:
Originally Posted by jaykay
Nice technique!! Were there any precursors to this sequence? Other items to unbolt prior to starting.
I am surprised that the whole assembly can pivot on the front mount and not interfere with the studs
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They write up was pretty much it. A-Z. Definitely needed to get a wheel alignment after
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12-22-2019, 05:23 PM
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#297
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Registered User
Join Date: Sep 2018
Location: Philadelphia
Posts: 8
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Quote:
Originally Posted by Robert986
Great info, I will put in the 987-box this winter..
However I´m also about to change the front engine mount. Do you think that the same trick (lowering the engine to switch airbox) can be done by lowering the engine in the front while the front engine mount is removed during the switch?
I know, I need to get off my computer and get going in the garage..
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You can probably do that but then you really need to secure the engine and trans. Why not do the method I used and change the front mount after you put it all back together? Changing the front mount then makes more sense I think.
Last edited by scottmaggie; 12-28-2019 at 05:15 AM.
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04-22-2020, 01:28 PM
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#298
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Registered User
Join Date: Nov 2019
Location: Orange County, CA
Posts: 57
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Has anyone done this to a 2002 Boxster S? I have a question about the tune used.
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04-26-2020, 12:33 PM
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#299
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Registered User
Join Date: Apr 2020
Location: Germany
Posts: 2
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For all those who wants to use the 987 MAF housing on the 986 S ...
I have used this reducer which fits after a bit sandpaper exactly in the 987 MAF housing
cutting out a hole for the MAF
https://www.pvc-welt.de/PVC-U-Klebemuffe-ECO
AL107
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04-26-2020, 12:38 PM
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#300
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Registered User
Join Date: Apr 2020
Location: Germany
Posts: 2
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For all those who wants to use the 987 MAF in the 986 you can just implement this into the MAF housing to reduce it safely
AL107
https://www.pvc-welt.de/PVC-U-Klebemuffe-ECO
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