Any interest in SAI delete circuit?

[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.

[thstone]

PW, that looks like a nice bit of kit! Well done. SAI codes can be a real PITA.

Originally Posted by alex.rhodes

Is there a performance benefit from no SAI?

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).

[Gelbster]

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.

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.

[thstone]

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.

Here are the PN's for the blocking plates and gaskets:

[particlewave]

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[Jamesp]

Originally Posted by particlewave

I'm not looking to make a profit...

Make a profit, otherwise you'll starve. If that happens we don't get your follow on secondary O2 delete circuit.

[notech]

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

[Dave80GTSi]

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)

[particlewave]

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[Gelbster]

I was Particlewave's tester for the SAI circuit. If the O2 sensor circuit is as effective ,it is a very useful device.
I was not trying to cheat the Smog Laws. I was up against a deadline for the Smog Test and needed the 'sticker'' so I could continue working on fault finding. Without a "Pass" of the Smog Test and the precious sticker, your out of date one makes you CHIP bait.Expensive !
The other problem is the "Drive Cycle". If you research this ,you will see comments that it is a potentially dangerous/impossible procedure in urban areas.
Particlewave's circuit allows a more leisurely approach to solving the SAI issues.
For the O2 sensor circuit, the situation is similar. I had O2 sensor codes despite a newly rebuilt engine and 4 new sensors,coils,plugs etc. I needed to pass Smog to get the sticker, to continue working on a fix. The only hack available is anti-foulers. These are clearly visible and an instant huge penalty in the Visual part of the Test. You do not want to do that ! In my case the O2 code seems to have been aberant but when that comes up on your way to the Test you have no way of knowing it. Just clearing the code resets all the Readiness Monitors to "Fail" - it is a useless reaction.
The O2 Sensor circuit is easily removable/reversible just like the SAI circuit. It is therefore a great aid to gaining the time to diagnose and fix the problem.
Without the O2 problem-solver circuit , you might mistakenly buy 2 new catalytic converters - a huge and needless expense.
The other caution is that we don't know the long term effect of running with these problem-solvers circuits connected. I expect the SAI circuit would be totally harmless despite the brief unburnt HC. There are adverse comments about cheapo O2 code MIL eliminators(EBay) but Particlewave's test circuit should not be confused with those.
http://www.ebay.com/gds/Truth-about-O2-simulators-/10000000002812356/g.html
I hope this perspective helps others understand the justification for the SAI problem solver circuit and similar devices as a diagnostic tool.
Thanks to Particlewave for helping us.

[Nine8Six]

Originally Posted by Gelbster

I was not trying to cheat the Smog Laws.

Here, it is exactly that we are trying to do to. Not because we want to kill the world, its just to keep our modded cars on the roads for an extra year - or at least until we buy another less polluting one. So far the advertised technique locally that work every time is to mix your gas tank with alcohol (5gas:1alcohol ratio) and heat up the crap out of the cats/exhaust before the inspection.

My box just passed 3 months ago. Has performance 200cells cats and modded exhaust so you could also call this trick worthy. Burns cleaner than a Tesla

Downside: 100% alcohol is not exactly cheap. A circuit might be the solution lolll