I think eBay has a rebuild kit for it, and still looking around for that manifold, I don't think I wanna run e85 since only 2 gas stations around here carry it would be ideal for a race only car.

Do you know what necessarily causes this and how to control it or to prevent it?

 

What causes this is refilling your gas tank; as you refill, the "empty volume" gets displaced by fuel. However this empty volume actually has fuel, specifically-and as far as EPA is concerned-hydrocarbon vapors. Since the 70s manufactures have not been allowed to let their gas tanks vent the hydrocarbon vapors to the atmosphere. Their solution was to catch the vapors in a charcoal canister and "vent" that canister to the intake manifold in a metered fashion to combust the hydrocarbon vapors. The venting of the gas tank and charcoal canister to the intake manifold is controlled via the ecu and solenoid valves. This is essentially your evap-purge system.

The aem ems V1 has outputs for it, but can't control it. Nor does the hondata ems. The flashpro may but I'm uncertain as I am of the aem ems V2. The data on haltech is thin. Hydra, don't know either. Sorry I'm not much help here.

The cheap solution is to clamp the vent hoses and use a vented cap. I still want to keep the functionality of the evap-purge system so I'm going to try a basic timed relay system. The challenge will be to find cheap relays that can take the harsh automotive environment.

I'll do a write up of it, but I have so many projects right now. Still need to write up the carbonetc final drive swap. Working on 350z projects as well...

 

The problem with the AEM is it only allows you to open the purge valve over a certain TPS percentage, not close it. It seems like something so simple so I don't understand why they didn't incorporate that into the EMS. So once you hit boost, the charcoal canister is filling with pressure and causing a bad fuel smell. At least, that's what my car does. I'm going to install a check valve between the intake manifold and purge valve to hopefully alleviate this. That seems like the easiest way to fix it and still have some sort of PCV function to me anyway.

 

Huh gotta look into this more seems like a strange issue that could be bypassed. Basically when you switch to a stand alone they aren't fitted to control the purge system. So we know of only 2 ways around this?

 

Anyone know of a good rebuild kit for the Greddy turbo