Just finished installing my SAFC II and my AVCR. All seems to be OK on the SAFC, however on the AVCR the RPM reading is half of that on the SAFC. Exactly half, so I believe I must have missed with one of the settings. I have the settings on 4 cylinder, 4 speed and arrow up.
Anybody know what' could be wrong.

 

mine are about 100-400 rpms off compared to the tach.
as the revs increase

 

Hmm, sounds different from what I have. As the revs increase, the AVCR is always showing exactly half of what the SAFC is showing. And what's on the SAFC corresponds with what's on the tach.
I would find it weird, but could it have anything to do with the fact that I don't have the speed hooked up yet?

 

Problem solved!
If you use the injector signal, cylinder should be set to two instead of 4.
Now both the AVCR and SAFC II are reading exactly the same RPM's, corresponding with the tach. great stuff!!!

 

that's good to know..

I have a question for you.. did you have boost issue when your RPM was reading half??

Just wondering..

 

Not that I noticed no, but I've only had the engine running stationary and up to about 3500rpm max so far since installing everything