Hi Ken, looks like you have a very good understanding of the GM Evap System and I could use some help figuring out how to approach getting emissions legal in NJ. I’ve been doing a lot of reading but really not sure how this works.I used nylon fuel tubing (the same as OEM) for my evap lines. You can buy it in a 20 foot roll for about $10 to $20. The fittings are available too. All can be purchased at Summit Racing. The manufacture is Dorman. These are also easily found at your local auto parts stores as well.
I believe the EVAP operation is already in the factory GMPP tune. They just change the fault codes to be not reportable. You would need to change the codes to be reportable with tuning software such as HP Tuners.
You can add the two wires to the ECM connector. I can give you a lead as to who sells the needed pins. There is even online tutorials as how to add pins (circuits) to your ECM plugs.
In the near future I’d like to buy the engine for an SLC Build and want to better understand if my plan will work out with regard to emissions.
Here is what I am thinking. Plan to go with a GM E-Rod engine. It comes with an Evap System, but no tank pressure test components. Since the E-Rod is based on a Camaro 2011 Engine, NJ would label it as a 2011 engine(even if it was manufactured at a later date) and it would have to pass 2011 emissions standards,
I believe the EVAP OBDII flag is set to N/A, otherwise it is fully Emissions compliant. I am concerned that showing up for an emissions test and the Evap ready flag is set to N/A instead of “not ready” will be a problem.
Any advice you have on getting and E-Rod to fully pass an ODBII test would be appreciated, Not sure if indeed the EVAP flag is really set to N/A, or possibly use a tuner to activate the Evap System and then add the tank pressure sensor as required, or possibly buy a used ECU for an LS3.
Anyway, any input would be appreciated.