Good idea! I'll reach out to him.

 

Anyone ever thought about using the air pump as a crank pressure evacuation pump on boosted applications? I've thought about this in the past and when I removed mine but never really dug into seeing if it would work.

 

Never thought about it.....it could work. Not sure if those pumps are meant to be on 100% of the time. Maybe having it only come on when you're under boost. A thing to consider is that the internals of the pump may get coated with oil unless you have it installed after a catch can. I have a hose mounted to the breather nipple just ahead of the oil dipstick to a catch can and then to the intake (between the air filter and turbo). That way when the engine is under boost the more vacuum is in the intake.

 

Yeah I think, as you stated, it would probably be best to have the air pump setup just after a sealed catch can. Having it on a hobb switch or some other way through the ECU to only come on under boost. It may be a viable way to pull out excessive crack case pressures, as we all know an evacuation pump is the best way to achieve this.

Maybe someone that has time could start a nice thread on possibly using the emissions pump as a crank pressure evacuation pump and see what comes of it.

Sorry to derail the main subject, just another thought I wanted to share in here since I saw the comment from way back about removing that emissions vacuum pump.

 

I tried to send you a PM but your box if full

 

I have been doing some thinking and tinkering about how to setup my evap system. I have e-mailed my tuner about this setup last Wednesday; I have not yet received a reply. Upon doing my own research, it seems that most oem evap systems have certain conditions that need to be met for the evap solenoid to open e.g. coolant must be at a certain temperature. This is to control proper start up and drivability issues etc. Since most (if not all?) aftermarket tunable ecus don’t have provisions to control the evap system we are left with a few choices. Most DIY evap setups are passive (like Kyle’s and AaronCompNetSys’s). Since I am tinkerer by nature, I want to springboard off of their ideas but create an active system where the evap purge solenoid can be opened under certain conditions.

I am not an expert with Arduino (programable microcontroller), but I have pondered about the idea of using it to control the evap purge solenoid. I was thinking of using the oem coolant temp senor for the Arduino to read. I found out that most oem temperature sensors are thermistors (which change resistance based on temperature), Arduino doesn’t read resistance, it read voltage. As luck would have it, I am running sensors and gauges from PLX Devices. I have coolant & engine temp, oil pressure, and wideband O2. PLX sensor modules also has a 0-5v analog output, which is perfect for the Arduino to read.

I would like to have Arduino open the evap purge solenoid when 2 conditions are met:

1) Coolant temp must be at operating temp (around 175*F) (to avoid running rich on startup)

2) O2 air/fuel ratio must be 13.3 : 1 or leaner (hoping that the ecu is in closed loop and can compensate for the added fuel vapors).

I currently have written and tested a code that is working. Now I need to figure out how to wire up and plumb in the system.

I am learning/figuring this out as I go so any thoughts, insights, or comments are appreciated!

 

Run this setup in logging mode (sensors only) only for a week and compare it's stats for when it turns on vs turned off.
My passive system is connected pre-throttle body, so it doesn't suck very hard on the canister unless the throttle blade is opened some, so you could compare my stats by looking at your week worth of data at how many minutes your throttle was open greater than 5%.

 

Yeah, I quit paying for the memberships when I was getting the "Gold" and they never sent me my shirts. I even emailed them and never heard back. LOL So my inbox is full, sorry.

 

I didn't see you mention what you did with the 2 lines coming from the filler neck. Can you give some input on that please? What should I do with them to make it easier filling up with fuel at the pump.

 

Those aren't touched.