P0411 deleting

[eric909]

Ok so my car keeps giving me the code, "p0411" (secondary air exchange)
Ive hears some talk of people just deleting this all together.
Any info on how to do this?
Thanks!

[MechEngg]

Re: P0411 deleting

Look up savvy's thread on vortex. Or just google "delete sai, evap mk4" and it should come up. On a 1.8t engine btw. Not sure what you have

[onceover]

Re: P0411 deleting

I don't think theres any way of removing the code after you remove the SAI system unless you get it coded out of the ECU by someone who know what theyre doing

Mines removed and the code pops up every week or so

[tirerub]

Re: P0411 deleting

If your chipped by uni or similar they can write out the code and you just need to resistor the harness to keep your fuel trims in check

[eric909]

Re: P0411 deleting

ok but did anyone have that jerking at high RPMs? is that why it gets "deleted"?

[onceover]

Re: P0411 deleting

I deleted mine becasue I put in an AEB head which doesnt have provisions for SAI. I don't run a resistor on mine and don't get a CEL for it, I just get an "insufficient flow" code once in a while. REVO Stage 3 BTW

[eric909]

Re: P0411 deleting

oh ok. thanks.

[BaggedGLI]

Re: P0411 deleting

Mines gone, I have codes for it, resistored and all.

[Squire]

Re: P0411 deleting

ive had this code come up the last two times ive scanned for misfires, if you just delete the code, dont you worry about the secondary air pump motor and valves that run the system?

[Squire]

Re: P0411 deleting

more or less whats the secondary air injection system do?

[BaggedGLI]

Re: P0411 deleting

It adds more air and fueling for cold mornings to help the car warm up faster is my understanding.

In other words, completely useless.

If you want to replace parts my system was working before I pulled it out and would let basically all the parts for it I can still find for cheapcheap.

[eric909]

Re: P0411 deleting

ya ive heard it pretty much useless and all its doing now is causing me issues...

[MechEngg]

Re: P0411 deleting

It adds air into your EXHAUST valves. This helps to warm up the cat during cold starts because the cat has to be a certain temperature to effectively burn the unburnt hydrocarbons that make it down your tailpipe. Without this your car will not "pass emissions" on cold starts. This is why your car doesn't kick on the system if it is really warm outside or on a second start (if engine is still warm)

[Squire]

Re: P0411 deleting

It adds air into your EXHAUST valves. This helps to warm up the cat during cold starts because the cat has to be a certain temperature to effectively burn the unburnt hydrocarbons that make it down your tailpipe. Without this your car will not "pass emissions" on cold starts. This is why your car doesn't kick on the system if it is really warm outside or on a second start (if engine is still warm)

I don't have a cat haha so when I get a chip I'll get it deleted like you guys said

[sabbySC]

Re: P0411 deleting

You'll need an SAI blockoff plate as well.