88TransAmFreak

iTrader: (15)

I'm wanting to put an evap system on my 2nd gen camaro with a LS1 swap using a holley dominator ECU.

It looks like setting up my evap with 3rd gen components would be the way to go. I can set up the Holley ecu with a negative trigger output to based on if certain conditions are met. This would work great to trigger the purge solenoid.

Looking at my 1990 Camaro service manual it says the purge valve activates on these conditions:

- Above a specified road speed

- Engine is Warm

- After the engine has been running for a certain time

- Above a specific throttle opening


But it doesn't say exactly what these should be....can someone help me with this if they know it?

Thanks in advance

RBob

iTrader: (1)

Here are the parameters from a '91 6-spd y-body. Note how the ECM also checks the short & long term fuel trims and will adjust accordingly.

RBob.

88TransAmFreak

iTrader: (15)

Awesome, that's what I needed to see, thanks again