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Old 01-29-2012, 01:04 AM   #29
2010GTi Carbon
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Quote:
Originally Posted by Thumper View Post
Agreed, and the point about CATs is on the mark IMHO, but the SAI is pointless. 97% of emissions laws have nothing to do with actual pollution (particulates and carcinogens) and more focused on the so called greenhouse gases of CO2 (you know, it makes up less than 1% of all gases in our atmosphere, plants use it to create oxygen, and we use that to breath LOL) and of course, the ultimate goal; bureaucracy and government pensions. A CAT serves a purpose, it converts carcinogenesis into CO2 and cleans up the emissions. SAI does nothing REAL, I am supprised it is still around, but of course, as I said, emissions laws have nothing to do with emissions.

We call it Secondary Air Injection (SAI) now, but it's been around since the 60s and 70s, it was called a "smog pump" back then. The auto manufacturers came up with it to achieve the ridiculous emissions laws passed back then. The government (mostly CA, as always) mandated a certain emissions requirement that was impossible to achieve with the technology available. The car makers came up with an idea.....they could not reduce the emissions from the engine that exited the tailpipe, but the tests are all based on PPM (Parts Per Million) which means it measures all the air coming out and determines the percentage. What they COULD do is change the AMOUNT of air coming out the tailpipe. The smog pump (SAI) injects outside fresh air into the exhaust.....there is some minimal increase of combustion and assist to the CAT, but the main reason was pumping fresh air into the exhaust meant more fresh air in the exhaust......which means a lower percentage of emissions in the tested air.

And the hippies fell for it, loved it, and here we are still using it.

Any one delusional enough to believe that VW (or any car maker) is designing and building two DIFFERENT emissions systems that do the SAME thing for sale in states like CA and NY and other pockets of emissions strict areas are poster children for the public school system.

I can buy a CCTA GTI out of state, drive it in, and take it to any smog test and pass the sniffer tests, no problem. So why have the SAI??
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Old 02-04-2012, 04:21 PM   #30
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2 fault codes from the SAI Delete


009266 - Secondary. Air Inj. Sys. Flow/Pressure Sens Bank 1
P2432 - 000 - Short to Ground - MIL ON
Freeze Frame:
Fault Status: 11100000
Fault Priority: 0
Fault Frequency: 1
Mileage: 30966 km
Time Indication: 0
Date: 2014.14.02
Time: 14:42:46

Freeze Frame:
RPM: 0 /min
Load: 0.0 %
Speed: 0.0 km/h
Temperature: 60.0∞C
Temperature: 45.0∞C
Absolute Pres.: 980.0 mbar
Voltage: 12.192 V

005170 - Secondary Air Injection Solenoid Valve (N112)
P1432 - 000 - Open Circuit - MIL ON
Freeze Frame:
Fault Status: 11100000
Fault Priority: 0
Fault Frequency: 1
Mileage: 30966 km
Time Indication: 0
Date: 2014.14.02
Time: 14:44:58

Freeze Frame:
RPM: 1188 /min
Load: 15.3 %
Speed: 0.0 km/h
Temperature: 60.0∞C
Temperature: 44.0∞C
Absolute Pres.: 980.0 mbar
Voltage: 11.938 V
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Old 02-11-2012, 09:20 PM   #31
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Originally Posted by dbduke View Post
Not a fan of this, at all. SAI is one of the best emissions control inventions ever, and dramatically reduces NOx and CO emissions with ZERO cost to performance. Its downright asinine to 1) remove and 2) advocate the removal of this device just to make your engine bay look cleaner. And seriously, do you think anyone else will ever notice?

I'm hoping that you just don't realize why SAI is used. The VAST majority of harmful emissions produced by cars occur during the first few minutes while the cat's get up to temp. And by VAST, we're talking upwards of 90% in some situations. The SAI is there to speed up the heating process. This modification will significantly extend the amount of time required for cat's to heat up, and will result in, ballpark, 5-20x times more NOx and CO emissions.

Basically, you're now pumping out more toxic gas than an 18-wheeler semi. And for no reason, at all. Great job.
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Old 04-02-2012, 03:04 PM   #32
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Not saying anything else but Eurodyne can turn this fault code off among man others. Just learned about it today.
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Old 04-02-2012, 04:06 PM   #33
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Originally Posted by GunMetalGTI View Post
Not saying anything else but Eurodyne can turn this fault code off among man others. Just learned about it today.
WHAT?! More details please!
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Old 04-02-2012, 04:16 PM   #34
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Originally Posted by GunMetalGTI View Post
Not saying anything else but Eurodyne can turn this fault code off among man others. Just learned about it today.
Yeah man, I got your PM. Good stuff to hear! Fortunately, I was able to fix my issue with a simple APR CBFA filter.

Its good though for anyone wanting to delete the SAI pump.
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Old 04-02-2012, 09:11 PM   #35
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hmm.....its a certain filter they use? Besides the breather one?

Sounds like something they should be throwing in with their kits for us CBFA guys lol
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Old 04-02-2012, 09:14 PM   #36
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Originally Posted by GunMetalGTI View Post
hmm.....its a certain filter they use? Besides the breather one?

Sounds like something they should be throwing in with their kits for us CBFA guys lol
No its the breather filter. I forgot to put the "breather" in it. It basically allows for maximum flow. I did some logs and the air flow through the pump with and without the filter is unchanged with APR's filter. The old filter I had on there decreased it by 30-40%!!!!!!!!!!!!!!!!!!!!!! That's what was giving me the fault.
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Old 04-02-2012, 09:31 PM   #37
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Lots of time spent for no performance gain, and more pollution. Plus the added benefit of a CEL. Count me in.

Almost forgot I have a CBTA engine. I wish I had a CBFA, just so I could do this.

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Old 04-02-2012, 09:56 PM   #38
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Lots of time spent for no performance gain, and more pollution. Plus the added benefit of a CEL. Count me in.

Almost forgot I have a CBTA engine. I wish I had a CBFA, just so I could do this.
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Old 07-09-2012, 09:31 PM   #39
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any updates on this?
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Old 07-17-2012, 05:51 AM   #40
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wow. this just goes to demostrate how little people know about car's electronics.

lets get clear on one thing, i'm not talking about the enviroment.
for all i care, i'll be dead long before anything has to concern me.

now: if you read a bit on the mk3 and mk4 sai delete, you'll understand why is it that this "mod" is SUPER dangerous. Under the "right" conditions, you could very likely blow up your engine.

basically: you are making your car loose AFR control. its operating on a AFR narrowband.
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Old 07-17-2012, 09:58 AM   #41
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I've had no issues, even when motoring through the 119 degree desert.
Not doubting you, but what are these "right conditions"???
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Old 07-17-2012, 10:03 AM   #42
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This system only operates under specific startup conditions and no other time after that. If there is an issue that occurs the system defaults to a specific startup lambda, which is a little rich in some cases. This is apparent due to the smell.

I did enough research on this system when I had my P0491:
http://www.golfmk6.com/forums/showthread.php?t=31179
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