AIR delete... Who's pulled it? Effect? - ZR-1 Net Registry Forums

Schrade · 04-25-2014

What do you know about AIR system deletion?

Is it only for emissions? Or for tune? Is it in Calibration at all?

What effect has removal from tune? The OBX hardware I got has only a P side port for AIR plumbing, and I'm considering system delete here...

mike100 · 04-25-2014

Quote:

Originally Posted by Schrade

What do you know about AIR system deletion?

Is it only for emissions? Or for tune? Is it in Calibration at all?

What effect has removal from tune? The OBX hardware I got has only a P side port for AIR plumbing, and I'm considering system delete here...

That port on the pass. side is the EGR tube and the early 375 hp engines don't use that. just thread in a bolt and tack weld it closed.

You can unplug or remove the air injection pump and the car will never know- it does not monitor that and there is no fault code to set the check engine light. OBD1 for-the-win.

We Gone · 04-25-2014

Removed all air systems no issues with passing here, or maybe they don't know what to look for. I believe the AIR only runs at start up. In Ga. all they care about is if the OBD1 cars pass the sniffer on the rollers and still have visible cats.

4-cam · 04-25-2014

We have to pass a visual check in colorado. Thats why I added them to my headers. They dont have to work, they just have to be there. Another stupid emmisions rule that does not make any sense. If it wasn't required , I sure wouldn't have gone thru the trouble installing them. Each state emmsion s laws vary .

LantanaTX · 04-26-2014

Mine is not functional and didn't get caught in inspection. I think they just did a sniff test here in Texas.

Schrade · 04-26-2014

What exactly is the 'Air injection' function? FSM is still snow [dust] bound...

And there's no feedback for the cal / tune?

Looks like header completion just bumped up a day???

4-cam · 04-26-2014

The pump adds air to the exhaust on a cold start. Cleaner burn and lights off the cats faster is what im told. Only operates for a few minutes at startup. No feedback so no code when you remove it

WARP TEN · 04-27-2014

Quote:

Originally Posted by 4-cam

The pump adds air to the exhaust on a cold start. Cleaner burn and lights off the cats faster is what im told. Only operates for a few minutes at startup. No feedback so no code when you remove it

4-Cam is right. It only operates on a cold start (according to Marc H about 90 seconds). We don't need emissions testing in Illinois so I pulled mine and there is no adverse effect on performance. I also don't have cats or secondaries. --Bob

Dynomite · 04-27-2014

Quote:

Originally Posted by Schrade

What do you know about AIR system deletion? I have deleted two.

Is it only for emissions? Yes and then only for cold starts

Or for tune? Is it in Calibration at all? No

What effect has removal from tune? Nothing

See Item #5 LT5 Eliminated Systems

5. Eliminating Air Injection system.

The Air Injection System including the Air Pump has been eliminated (especially for those who are installing Headers). Associated with the Air Injection system is one vacuum line on the drivers side fender skirt above the shock tower. I eliminated the "T" and just moved the "Y" in front of "T" about 3 inches and plugged the "Y" back in where the "T" was. This modification maintains the Cruise Control Vacuum and the associated Vacuum to the Cruise Control Vacuum Reservoir under the Drivers Side Headlight.

scottfab · 04-27-2014

Mine is functional and intact. One of the more easily fixed systems on the car. I have not pulled it.

04-25-2014	#1
Schrade Join Date: Dec 2012 Location: NC Posts: 1,786	AIR delete... Who's pulled it? Effect? What do you know about AIR system deletion? Is it only for emissions? Or for tune? Is it in Calibration at all? What effect has removal from tune? The OBX hardware I got has only a P side port for AIR plumbing, and I'm considering system delete here... __________________ I'm getting my snappics / threads removed blindly as fast as I can, to get in compliance with copyright / license TOS on the boards here (lots of FSM pages and other copyright / license violations on my part; sorry guys). And thanks to all the guys who didn't whine when I posted those FSM copyrighted / licensed stuff in my threads... ( :thumbsup: [b]and to think I complied with a mod's request to delete a pic of him in a Challenge Car in NCM Museum, so he wouldn't get in hot water)[/b] Thanks to several guys here for sending parts FREE; BearlyFlying, WeGone, Geezer, GoldCylon, and more there, TonyD, mike100, fletchusmc... 1990 #2794; 4L60e Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless, Power Effects 3" [IMG]https://lh5.googleusercontent.com/-GHpfzty7DVU/UQn-0Ru2xAI/AAAAAAAAA14/08mz1p4QLD4/s445/Screenshot-5.png[/IMG]

04-25-2014	#3
We Gone Join Date: Apr 2004 Location: ATL. GA. Posts: 2,170	Re: AIR delete... Who's pulled it? Effect? Removed all air systems no issues with passing here, or maybe they don't know what to look for. I believe the AIR only runs at start up. In Ga. all they care about is if the OBD1 cars pass the sniffer on the rollers and still have visible cats. __________________ Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold

04-25-2014	#4
4-cam Join Date: Feb 2010 Location: Arvada Colorado Posts: 194	Re: AIR delete... Who's pulled it? Effect? We have to pass a visual check in colorado. Thats why I added them to my headers. They dont have to work, they just have to be there. Another stupid emmisions rule that does not make any sense. If it wasn't required , I sure wouldn't have gone thru the trouble installing them. Each state emmsion s laws vary . __________________ [I]4-cam[/I] [I]1991 ZR-1 Blk/Gry #31[/I] [I]SW Headers/Xpipe- Dynomax Muffs[/I] [I]Ported top end[/I] [I]Secondaries Removed[/I] Tune by Dominic Last edited by 4-cam; 04-26-2014 at 12:13 AM.

04-26-2014	#6
Schrade Join Date: Dec 2012 Location: NC Posts: 1,786	Re: AIR delete... Who's pulled it? Effect? What exactly is the 'Air injection' function? FSM is still snow [dust] bound... And there's no feedback for the cal / tune? Looks like header completion just bumped up a day??? __________________ I'm getting my snappics / threads removed blindly as fast as I can, to get in compliance with copyright / license TOS on the boards here (lots of FSM pages and other copyright / license violations on my part; sorry guys). And thanks to all the guys who didn't whine when I posted those FSM copyrighted / licensed stuff in my threads... ( :thumbsup: [b]and to think I complied with a mod's request to delete a pic of him in a Challenge Car in NCM Museum, so he wouldn't get in hot water)[/b] Thanks to several guys here for sending parts FREE; BearlyFlying, WeGone, Geezer, GoldCylon, and more there, TonyD, mike100, fletchusmc... 1990 #2794; 4L60e Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless, Power Effects 3" [IMG]https://lh5.googleusercontent.com/-GHpfzty7DVU/UQn-0Ru2xAI/AAAAAAAAA14/08mz1p4QLD4/s445/Screenshot-5.png[/IMG]

04-26-2014	#7
4-cam Join Date: Feb 2010 Location: Arvada Colorado Posts: 194	Re: AIR delete... Who's pulled it? Effect? The pump adds air to the exhaust on a cold start. Cleaner burn and lights off the cats faster is what im told. Only operates for a few minutes at startup. No feedback so no code when you remove it __________________ [I]4-cam[/I] [I]1991 ZR-1 Blk/Gry #31[/I] [I]SW Headers/Xpipe- Dynomax Muffs[/I] [I]Ported top end[/I] [I]Secondaries Removed[/I] Tune by Dominic

04-26-2014	#5
LantanaTX Join Date: Mar 2014 Location: Lantana, TX Posts: 134	Re: AIR delete... Who's pulled it? Effect? Mine is not functional and didn't get caught in inspection. I think they just did a sniff test here in Texas. __________________ [SIGPIC][/SIGPIC]1991 #0663

04-27-2014	#10
scottfab Join Date: Jan 2009 Location: Portland Oregon metro area (Washington side) Posts: 3,207	Re: AIR delete... Who's pulled it? Effect? Mine is functional and intact. One of the more easily fixed systems on the car. I have not pulled it. __________________ Scott Vett owner since 1979._It's about the car and the people