fuel inrichment

[jbrown]

I have an adjustable WUR and BL solenoid. I have the MSD box set for 4800 rpms.
When I give the car full throttle , at 4800 rpms I use to see my A/Fs go down on my wide band. Now I am running lean up top and don't see the A/Fs drop on my gauge anymore.
I checked the solenoid and it is working fine. I have a CIS gauge. Is there a way to check the WUR to see if it is working properly under boost.
Thanks John

[fredmeister]

You can hook up a mityvac to the pressure line going into the WUR and see how the CP drops when you start supplying pressure to the line.

You want to note the pressure value when it starts to drop CP which is the threshold point,

You also want to note the CP when it stops dropping and this is the boost CP pressure.

You sure you checked to see if your solenoid is normally closed or normally open when you set it to the RPM activated switch?

One more thing, try dropping the rpm open value down to 3000rpm and see if that makes a difference.

Fred

[jbrown]

Originally Posted by fredmeister

You can hook up a mityvac to the pressure line going into the WUR and see how the CP drops when you start supplying pressure to the line.

You want to note the pressure value when it starts to drop CP which is the threshold point,

You also want to note the CP when it stops dropping and this is the boost CP pressure.

You sure you checked to see if your solenoid is normally closed or normally open when you set it to the RPM activated switch?

One more thing, try dropping the rpm open value down to 3000rpm and see if that makes a difference.

Fred

solenoid is normally closed and opens at 4800. I checked the solenoid and it is closed.
I set my MSD for 1500 rpms and it opened up. So all is good with solinoid and MSD box.
I am wondering if my meth injection kit is interfering with the vacuum in the throttle body. I have my meth jet at the intercooler out pipe. My solenoid gets vacuum from the throttle body. Do you think when the meth sprays in there it could effect the vacuum line?