View Full Version : ?s about AIR injection
:confused: K Obi, the air injection is for emissions, right? What does it do?
From my limited knowledge it looks like it adds air to the exhaust. That or another pay for the exhaust to exscape.
Am i able to remove it from the 2001 or will it set codes? Would an O2 sim help or does it destroy performance/tuning?
Recap removing Air Injection...
This is what i have been thinking as you probably concluded:
Headers - non air-injection
O2 sim - for comp code issues, unless a better way around it (if needed)
extra??? - for other sensors/ tuning issues setting off codes?
I know Obi you've been thinking this with your own vehicle, that or you have a custom brackets / intake in mind for putting a wynjammer in your NEW BABY! :eyebrows_
Did AL have any other solutions?
Thanks for all your help in the past Obi. You 2 SC-ZQ8
And thank you to everyone else for your responses.
OBI WAN
04-03-05, 02:19 PM
"""K Obi, the air injection is for emissions, right? What does it do?""""
It adds air to the exhaust to help it burn off excess fuel during warmup stage and also during areas when the 02's pick up enrichement. This was to save the cats from a melt down when excess fuel it ignited in the cats which burns the plates!
""Am i able to remove it from the 2001 or will it set codes? Would an O2 sim help or does it destroy performance/tuning?""
Without a custom flash or a way to flash the comp yourself, you cannot remove the air injection system. 02 stim is only to fool the comp into thinking the cat is there and working. 01+'s it doesnt even always work, because of air injection and tighter controls.
My new one doesnt have air injectionor or EGR. Its using the new dual element high effiecency cats.
I've had had mentioned to me when I had the 01 to rebend the outlet on the drivers side to allow the 1 inch room needed to add the Wynjammer. That is a possiblity and even thought it could work, it could also break when trying. So seeing how it was attached I wasnt to worried about that possiblity. The tube is of normal OD tubing size so and idea using a 90 degree compression fitting to get a quicker turn out of the exhaust mani was in the forefront of this brain!
Thanks for the input. So an O2 sim would be not a good idea...possibilty of always running rich...
Supercharged-ZQ8
04-03-05, 09:28 PM
I've been trying to figure a way to not so much disable it as MOVE it. . . We're thinking of upgrading her to a Tahoe -- at which point I will use the Blazer as my daily driver (trading the Cavalier for the Tahoe -- I like it, but I like the Blazer better).
And, if I use the Blazer as a daily driver, it's getting a couple more mods (ahem, supercharger, ahem, headers, ahem). If i could figure out how to move it about 3 inches, a Wynjammer would fit -- but as it is, the intake tube wouldn't fit because of that damn air injection valve.
Unless you're looking to go with a S/C, you don't need to bother with the air injection -- it doesn't rob any horsepower that I'm aware of -- it's just in the way of certain upgrades. The only other thing that it convolutes is that only JBA makes a set of headers for air injected vehicles.
3" to get the wynjammer to fit... i wonder how different the JBA Headers are for the air injection fitting. Maybe ill just get rid of it on the one side, if anyone or myself can't find away around it. Im sure someone will before I am able to attempt it.
OBI WAN
04-04-05, 05:49 PM
JBA exits still the same way and distance. Like I said earlier, its a normal tube size. If someone was to get a 90 degree compression fitting and cut is very close to the connection on the exhaust mani, then connected the other end to the compression fitting, I believe just over 1 1/2 inches could be gotten back. And from measurements S/C gave me, thats enough!
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