CIS adjustability+questions...more>>>

[panel]

I've talked alot about this on the FI forum but wondered what those 914 TURBO guys were running for control pressure. My bus seems to run awsome with the CPR disconnected. I think it's at around 25-30psi. She really runs the best in the mornings for the first two minutes if connected though. My pressure tests are right on by the book for the fuel dist and CPR I'm running. But after the 2 mins of driving it really leans out but as soon as you lift your foot off the throttle it comes back to stoich. These are under NON boost applications just normally driving it around. She's always been great to drive when under boost though.

Maybe cause the pressure from the manifold presses down on the Audi CPR and lowers the CPR pressure?

[ejm914]

I'm using CIS-E on my turbo so there is no CPR, warm-up mixture is controlled by the differential pressure regulator.

With the CPR electrical connector disconnected you'll be running rich when warm. Leaning out when you close the throttle is caused by the sensor plate momentarily swinging to it's rest position.

Maybe cause the pressure from the manifold presses down on the Audi CPR and lowers the CPR pressure?

Your running a CPR from an Audi turbo? Control pressure will change with manifold vacuum/pressure to compensate the mixture somewhat.