So if I have an 05 and the folks won't be looking for Vin number/vehicle info, it sounds like this might pass then? Waiting on this as I am about to order a SC

 

If they're doing readiness checks, it does not sound like it would pass going by what he described.

 

Readiness monitors are supported, as they are part of Mode 01.

To have the readiness monitors in pass mode, you need to have no CELs for at least a few driving cycles, which include a mix of idling, and speeds above and below approximately 37mph. Clearing a CEL through a scan tool will reset the readiness monitors to "not ready" state. Disconnecting the battery will NOT clear the readiness monitors or a CEL as this info is stored in flash memory, in contrast with the stock ECU, which uses battery-backed RAM.

 

I believe kpro does the same thing and it passes emissions. This isn't faking readiness just allowing for aftermarket parts to adhere to the same conditions the OEM ECU does with OEM parts.

Correct assumption Reverant?

So running a wideband and bigger injectors does not trip readiness codes unless they are malfunctioning.

 

Mostly correct. Running too rich or too lean will trip a code though, even if technically you are not malfunctioning. Ie if your idle AFR is 14.0 while the target is 14.7, and your trim correction reaches -20% for more than a few seconds, you'll get a P0172 "too rich" DTC and the "Fuel System" readyness monitor will be reset.

 

Would this show up in the form of a check engine light, or could these codes be thrown and we would not even know until you went to pass smog? Hmm, I wonder than if you could have a "smog ready" tune standing by, just load, drive for 90 miles, then smog, then switch back. That would be awewome....

 

There's a check engine if any DTC (code) is stored.

The CEL does NOT light up if the readiness monitors are still in no-go mode.

 

This is extremely interesting given that this supports OBD2. Sorry if this question was repeated (I just skimmed the thread), but how does one tune this? Does it use a Windows program? It it more of a DIY deal or can I bring this to a reputable shop that tunes AEM and have them tune it?

 

 

As flanders said, the tuning software is free to download, and runs natively on Windows, Mac and Linux.

You can either tune it yourself (as the tuning software supports autotuning) or get it tuned in any shop you want.