05-15-2017, 10:38 AM
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#1
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Custom User Title Here
Join Date: Mar 2012
Location: Ft. Leonard Wood
Posts: 6,167
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Last edited by particlewave; 09-27-2019 at 11:57 PM.
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05-15-2017, 12:35 PM
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#2
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Registered User
Join Date: Sep 2016
Location: NoVa
Posts: 67
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What's the cost? Is there a performance benefit from no SAI? I keep reading about the SAI headaches so getting rid of it could be a good thing.
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05-15-2017, 12:46 PM
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#3
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Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
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PW, that looks like a nice bit of kit! Well done. SAI codes can be a real PITA.
Quote:
Originally Posted by alex.rhodes
Is there a performance benefit from no SAI?
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No. The secondary air injection system only operates for about 90 seconds at start up to reduce cold engine emissions (so your car might pollute more but it won't have more or less power).
__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
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05-15-2017, 01:06 PM
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#4
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Registered User
Join Date: May 2014
Location: S.California
Posts: 2,029
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Quote:
Originally Posted by alex.rhodes
What's the cost? Is there a performance benefit from no SAI? I keep reading about the SAI headaches so getting rid of it could be a good thing.
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Alex,
If this works s I hope it will permit complete removal of the entire SAI system.The entry ports for SAI air on top of each cylinder head could be blocked off with plates.This is what the Track guys do.
Previously there was a big penalty for doing this to road cars in California-The CEL would illuminate & it would fail the Smog Test and get you into hellish conflict with the Authorities.The Ready Status would also be a Smog failure.
Hopefully this hack would not trigger a CEL nor would it produce A "Ready Status " failure.
To pass the Visual Test as part of the Ca Smog Test, you could leave the SAI pump and visible hose in place. Just disconnect it electrically.
You would still need the crack-prone Vacuum Acumulator and it's brittle vac hoses for other vacuum controlled functions other than the SAI.
I am just learning about this new part so please do not rely on my optimism - yet.
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05-15-2017, 05:02 PM
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#5
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Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
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Quote:
Originally Posted by Gelbster
The entry ports for SAI air on top of each cylinder head could be blocked off with plates.This is what the Track guys do.
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Here are the PN's for the blocking plates and gaskets:
__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
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05-15-2017, 05:04 PM
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#6
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Custom User Title Here
Join Date: Mar 2012
Location: Ft. Leonard Wood
Posts: 6,167
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..........
Last edited by particlewave; 09-03-2018 at 10:58 AM.
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05-15-2017, 05:53 PM
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#7
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Beginner
Join Date: Mar 2013
Location: Houston
Posts: 1,659
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Quote:
Originally Posted by particlewave
I'm not looking to make a profit...
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Make a profit, otherwise you'll starve. If that happens we don't get your follow on secondary O2 delete circuit. 
__________________
2003 S manual
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06-08-2017, 04:00 AM
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#8
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Registered User
Join Date: Aug 2013
Location: Gibraltar
Posts: 91
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Quote:
Originally Posted by particlewave
I'll see what I can do. Should be easy enough 
Probably about $60 shipped. If you guys think that's too much, let me know. I'm not looking to make a profit, just enough to make it worth while.  |
Subscribed for the Oxygen sensors hack!! Let me know if/when one is ready, I have some friends that might be interested too
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06-08-2017, 03:19 PM
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#9
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Registered User
Join Date: Sep 2016
Location: Central Ohio
Posts: 407
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Quote:
Originally Posted by notech
Subscribed for the Oxygen sensors hack!! Let me know if/when one is ready, I have some friends that might be interested too |
Amen! I'd buy a pair today if there was something like it on the market!
(Might be courteous to start a new thread on this since it's off-topic to the original post)
__________________
2000 Ocean Blue Boxster S
1980 Ferrari 308 GTSi
2019 Alfa Romeo Giulia Ti Sport AWD
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06-08-2017, 04:03 PM
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#10
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Custom User Title Here
Join Date: Mar 2012
Location: Ft. Leonard Wood
Posts: 6,167
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..........
Last edited by particlewave; 09-03-2018 at 11:03 AM.
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05-15-2017, 02:11 PM
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#11
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Registered User
Join Date: Apr 2011
Location: Massachusetts
Posts: 38
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I'll buy one.
Please put me in line.
email directly at.
f a v e r y m i at yahoo dot com
Thank you
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05-15-2017, 02:51 PM
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#12
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Motorist & Coffee Drinker
Join Date: Jul 2014
Location: Oklahoma
Posts: 3,942
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I'm interested. I keep telling myself I'll fix my '01's SAI next week (for about a year). I'd rather just cap off the vacuum.
__________________
I am not an attorney, mechanic, or member of the clergy. Following any advice given in my posts is done at your own peril.
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05-15-2017, 03:41 PM
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#13
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Registered User
Join Date: Sep 2016
Location: Central Ohio
Posts: 407
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While you are at it ...
I applaud your efforts here, but what would -really- be a nice build would be a similar module which would emulate the signal from the post-cat oxygen sensor.
Thus allowing us to use aftermarket non-cat headers without the lack of a cat triggering the CEL due to the improper signal from the secondary oxygen sensor.
How complicated would this sort of thingy be to construct?
Cheers - DM
__________________
2000 Ocean Blue Boxster S
1980 Ferrari 308 GTSi
2019 Alfa Romeo Giulia Ti Sport AWD
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05-15-2017, 04:44 PM
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#14
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Beginner
Join Date: Mar 2013
Location: Houston
Posts: 1,659
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Quote:
Originally Posted by Dave80GTSi
I applaud your efforts here, but what would -really- be a nice build would be a similar module which would emulate the signal from the post-cat oxygen sensor.
Thus allowing us to use aftermarket non-cat headers without the lack of a cat triggering the CEL due to the improper signal from the secondary oxygen sensor.
How complicated would this sort of thingy be to construct?
Cheers - DM
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I think you just need a 600mv constant voltage power supply while the car is running hooked to the O2 leads, and a resistor to make the car think the heaters are working. For me that would be super complicated to build, for P-wave, well if he's reading this, he's already designed it.
__________________
2003 S manual
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05-15-2017, 04:47 PM
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#15
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Beginner
Join Date: Mar 2013
Location: Houston
Posts: 1,659
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And one more item, What are the SAI delete circuits going to run? I now consider myself an SAI surgeon after diagnosing and fixing mine, now I want to be an SAI ninja and chop the damned things head off.
__________________
2003 S manual
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05-15-2017, 04:03 PM
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#16
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Registered User
Join Date: Jul 2005
Location: MA
Posts: 885
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I'm in for sure
__________________
98 Arena Red 986
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05-15-2017, 04:42 PM
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#17
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98 Arctic silver 986
Join Date: Jul 2011
Location: Upstate, NY
Posts: 1,452
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Yes....yes I am.
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05-15-2017, 05:56 PM
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#18
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Registered User
Join Date: Jul 2005
Location: MA
Posts: 885
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Thanks, Tom - I've been looking for those part numbers.
__________________
98 Arena Red 986
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05-15-2017, 05:57 PM
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#19
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Registered User
Join Date: Dec 2012
Location: FL
Posts: 4,144
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Please put me in line for one at $60 or even a little higher.
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05-17-2017, 03:26 PM
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#20
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Registered User
Join Date: Jul 2013
Location: Asheville, NC
Posts: 102
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I would like to have one, thanks!
__________________
'01 986S: LN IMS, PedroBar, PSS9 coil-overs, underdrive pulley, 997 short shift, GT3 console delete, Crios muffler mod
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