View Full Version : How can I remove the AIR Injection from my 99?
01-30-2012, 07:30 AM
I just bought a set of Dougs Mid length tuned headers that don't have provisions for the AIR injection tubes. I could care less for the AIR since it seems 99 was the only year they used it on the LS motor. I want to remove the pump and throw it out, but how do I wire it so that the ECU doesn't know it's gone? I'd go to the dealer to get the ECU reflashed, but because I live in CA, the dealer won't change anything that has to do with smog equipment. Personally I think it's a joke since the air inj only works for the first 4 min of a cold start up anyway...
02-02-2012, 11:32 AM
I figured it out! I simply looked at the wiring diagram.... I then removed the 30 amp maxi fuse, and walla! No check engine codes and the air inj pump and checkvalves are gone!
Sadly, I have to keep the egr to stay CA legal. (I made a thin block off plate that I'm going to use that is 18 gauge and smaller OD than the gasket, so I'm hoping it'll be unnoticeable.)
07-17-2012, 11:01 AM
will it pass the smog inspection? I am putting headers on my 99 suburban right now and can't get the air injection off the old manifolds. dealer has discontinued them
07-17-2012, 11:49 AM
It wont pass a visual, as the VIN will dictate functioning (connected) AIR injection.
But the right shop may not notice. :D
07-17-2012, 01:32 PM
Mine passed. I put on headers that had the CA legal carb number on a welded plate to the headers. Simply pulled the large 40 amp fuse and tucked away the 2 connectors that went to the air sys.
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