Safc Rpm problems?

[3kgt2dsm]

my safc reads that im at 350 rpm when the gauge reads 800. whats up with that?

 

[OMN_DSM]

Did you just install the AFC? if you did does it show about half of what the real RPM is no matter what the RPM?

Mike

 

[3kgt2dsm]

yup just installed. and yea its about 1000+ off at 3k so id say yea about half off. why what is it?

 

[OMN_DSM]

change the settings so it says its for 2 cylinders instead of 4. For some reason it won't read right, I think it is because our ignition has two firing cycles so there is always a wasted sprk.

Mike

 

[3kgt2dsm]

mike do you have a 1G?

 

[OMN_DSM]

Yes, i had the same problem you are having on my 91'.

Mike

 

[3kgt2dsm]

cool man thanks. now i gotta get this pig tuned.