Removing the CIS frequency valve
12-21-2004, 02:32 PM
#2
Burning Brakes
Why would you want to do that? The frequency valve is what controls your emissions and smooth running of your C2T. Also it will make you catalytic plug up faster. Sure it can be done and the car will run more like a '78 930, but you might loose some drivability. If your looking for more performance and enrichment, I would suggest looking into Rice Enrichment WUR or call Stephen at Imagine to get the fuel head modify for more flow. These upgrades are usually not necessary if you are running stock boost, but when you are upgrading to headers, more boost, cams, ect.. then you will need the extra fuel.
12-21-2004, 10:19 PM
#3
Rennlist Member
Chris
I haven't removed mine but I have been running my car with the O2 sensor unplugged. My understanding is that running it unplugged puts the FV in default mode which is 50% open. No drivability problems at all. This is a track car that is not street driven.
I haven't removed mine but I have been running my car with the O2 sensor unplugged. My understanding is that running it unplugged puts the FV in default mode which is 50% open. No drivability problems at all. This is a track car that is not street driven.
