987 v 986 Air box - 986 Forum - The Community for Porsche Boxster & Cayman Owners

onaFLYer · 01-17-2012, 09:15 AM

so I finally got to drive my car again, first impression of the 987 air box is a plus. Makes good sounds too. I will have a final install pic in a new post with all my engine mods to date soon. Need to break in the engine first, but I can tell already that it rips!

jaykay · 01-17-2012, 11:59 AM

Congrats!
Are you able to say whether the DME properly adapted to larger MAF housing diameter?

onaFLYer · 01-17-2012, 02:39 PM

Quote:

Originally Posted by jaykay

Congrats!
Are you able to say whether the DME properly adapted to larger MAF housing diameter?

Not yet, it was a short drive of about 2.5 miles. Had to unplug the maf, seems to have failed since it was siting in the garage.

Marchie · 01-20-2012, 09:55 AM

Thanks for the update, look forward to your next report. Keep up the good work.

Brad Roberts · 01-20-2012, 12:57 PM

Lots of good parts left on that wreck!! Paul doesn't say much does he?

B

Paul · 01-22-2012, 04:44 PM

Quote:

Originally Posted by Brad Roberts

Lots of good parts left on that wreck!! Paul doesn't say much does he?

B

I offered him $100, he said no and countered with $200. No sale....YET.

BTW I posted the pictures in hopes you could better show us where to make the cuts.

jaykay · 01-25-2012, 01:18 PM

Any thoughts in putting the rest of the Cayman intake in right up to the diverter tee? How could one run the diverter flap? I suppose a Cayman tune would be needed...

onaFLYer · 01-22-2012, 03:50 PM

Quote:

Originally Posted by Marchie

Thanks for the update, look forward to your next report. Keep up the good work.

Ordered a MAF off ebay, I should know better, wrong part and its used. Drove it on the highway first time anyway, pulls real well. Still waiting to have the proper MAF installed, then I will follow up again. Snow this week.....

Marchie · 03-06-2012, 10:03 AM

Hi Once,
What about trying your old Maf sensor from the 986 airbox. I thought I saw Brad say you should use it and that it fits. Just a thought. Brad has been quiet on here of late, I hope he's ok.

onaFLYer · 03-07-2012, 06:49 PM

Quote:

Originally Posted by Marchie

Hi Once,
What about trying your old Maf sensor from the 986 airbox. I thought I saw Brad say you should use it and that it fits. Just a thought. Brad has been quiet on here of late, I hope he's ok.

I did try that, it fits the same yes. Turns out the tube is too big for the DME to compensate for it, so I stuck some foam in there to reduce the size a little. Seems to be working so far, no CEL.

Marchie · 03-08-2012, 09:45 AM

Hi Ona,
I'm glad it's at least working even though it's probably not exactly as planned.

onaFLYer · 03-08-2012, 08:10 PM

Quote:

Originally Posted by Marchie

Hi Ona,
I'm glad it's at least working even though it's probably not exactly as planned.

Passed the smog test, removed the large foam and replaced it with a much smaller one. All good now.

JAAY · 03-11-2012, 04:59 PM

I just got my 987 airbox in the mail the other day. I am waiting to take my hardtop off to tackle trying this box out. I think it will be a good addition to the 3.4 in there now. I will take photos and keep people up date if anyone would like.

Marchie · 03-05-2012, 10:27 AM

Hi,
Just to clear something up for me, if I put the 987 airbox on my 986 2.7 , I can still use my existing maf sensor on the new larger maf housing with no problems ?
My plan would be to do the airbox, ipd plenum and larger 74 mm throttle body. Can anybody see any issues here and would I have to do any exhaust mods to compliment this. Mine is stock apart from a sport muffler( silencer) . In Australia we don't have the pre cats either just the rear ones. I would appreciate any opinions , within reason, lol.
Thanks.

berty987 · 03-06-2012, 04:44 AM

To be honest I would fit the 996 3.6 inlet tee rather than the IPD plenum to mount the 74mm throttle body and then fabricate my own hose to connect to the airbox via the MAF. The IPD plenum is an unearthly cost and gives very little benefit in its own right. Ideally i'd suggest the MAF should be the later type in the larger housing , but this requires reconfiguring in the DME I believe. With the original MAF and housing you risk the MAF becoming a restriction and ofsetting any gains from fitting the larger throttle body and plenum. The MAF will have a set range its allowed to accept in the DME, force too much air through it and the DME can throw a fault ,though i've only ever experienced it on a tubo car. good luck with hte mods , it would be interesting to see the result you come up with.

onaFLYer · 03-06-2012, 09:12 AM

Quote:

Originally Posted by berty987

Ideally i'd suggest the MAF should be the later type in the larger housing , but this requires reconfiguring in the DME I believe. The MAF will have a set range its allowed to accept in the DME, force too much air through it and the DME can throw a fault ,though i've only ever experienced it on a tubo car.

This seems to be the very problem I am having with my 987 box in my 986.

The MAF has the proper voltage, but I keep getting a CEL for MAF. And I cant get it smogged as a result. I started another thread trying to explore all of this.