s-afc II rpm issue

[adidas_coin]

My roomates 91 GSX has an issue with the afc, if the dash tach reads 3k the afc will read 1.5k....any thoughts????

 

[adidas_coin]

ok have the afc set for a 2-cyl.....that will only affect the rpm display and not other things right?

 

[adidas_coin]

getting the correct rpm's set this way, untill i can rewire his signal wire to the afc

 

[Coup D E'Tat]

ok have the afc set for a 2-cyl.....that will only affect the rpm display and not other things right?

Right. Set it at 2-cyl an call it a day, it won't affect anything else.

 

[LilBeanTSI]

I did the same thing to mine, works fine.

 

[spyderturbo007]

ok have the afc set for a 2-cyl.....that will only affect the rpm display and not other things right?

Just remember this if you are trying to tune. You are going to have to set your Ne points based on what the SAFC "sees" and not where you want the compensation to be. For example: If you want to set the 6k rpm point to -28%, you are really going to have to change the settings for 3k and not 6k.

This is also going to give you a smaller curve and "kill" some of your fine tuning, because your actual range of tuning is 500 rpm to about 3500 rpm, instead of 1k to 7k.

 

[steve]

Just remember this if you are trying to tune.

Once you set up the SAFC to read the correct RPM the problem is over. It makes no difference to the SAFC if it's set for 2 cylinder or 4 cylinder. That's just to the the RPMs right.

Steve

 

[spyderturbo007]

Once you set up the SAFC to read the correct RPM the problem is over.

Right, but I wanted him to know that in case he decided to try to tune it like that before changing it from 4 cyl to 2 cyl.