removing air injection?

[jyarosz]

I have a 96 lsc.I would like to remove all the air injection stuff.Will this give me a check engine light or cause any other problems?

 

[markup97]

I believe so. I had to have it 'tuned out' of my canned base tune for my '97 (both are OBD2 cars).

 

[driller]

I had the Cobra manifolds installed on my '96 and deleted the air injection as well as the EGR with no change in the tune. It did not give any check engine light and did not cause any other problems.

 

[beerdog]

If your state does emissions testing you may trouble passing. Why do you want to remove it?

 

[jyarosz]

My state(Michigan)has no emission testing.I want to install underdrive pulleys and all the air injection stuff is in the way.I have to remove it and don,t really want to put it all back on if its not needed.

 

[chris2523]

don't put it back.
i dont think my 96 gave me a CEL either.

 

[jyarosz]

Did you just unplug the air pump and cap the lines that go back to the cats?

 

[chris2523]

i removed the pump and lines entirely.
took the caps off the lines, put a dime underneath, and put the caps back on the manifolds.

 

[germansheperd]

You leave the bracket unbolted in front of the crank pulley. I have underdrive pulleys and left all my air injection in place and functioning. The ‘point’ where the bolt hole is will ride inside the lower crank pulley but won’t move or go anywhere.

 

[jyarosz]

My understanding is the air pump only runs for a few minutes when first starting the engine to help the cats heat up in cold weather.I don't drive the car in cold weather.If it wont affect driveability I,ll just leave it off.

 

[driller]

My understanding is the air pump only runs for a few minutes when first starting the engine to help the cats heat up in cold weather.

The system is active for a few minutes when first starting the engine in the cold start strategy, not necessarily in cold weather.

 

[jyarosz]

so what happens if it doesn,t work?

 

[driller]

so what happens if it doesn,t work?

You'll probably emit a bit more nitrogen oxides (NOx) than normal until the catalytic converters get up to temperature.

All the secondary air injection system does is pump some "oxygen" (air) into the exhaust stream to help with a more thorough combustion of the exhaust gases during typical cold start strategies where there is usually an excessively rich air/fuel mixture. This extra combustion process also sort of 'kick starts' the catalytic converters into their operating temperature range.

In and of itself, it's not a cure-all, end-all emissions system but more of a temporary and partial assist in the reduction of emissions. The vehicle will still start and run normally. At worst, you may detect a rich fuel smell from the exhaust on a cold start. Once the engine reaches operating temperature, the cats will likely be up to optimum temperature and the air/fuel mixture will lean out. Subsequently your emissions will be much less.

 

[94badbird]

Is there any hp or tq that gets freed up by deleting the air injection ?
Is the secondary air injection kind of the same thing as what smog pumps were ?
That airpump crap sure looks crowded and just thrown in there, I would like to delete it for cosmetic purpose alone.

 

[driller]

Is there any hp or tq that gets freed up by deleting the air injection ?

No.