Im using my friends sn and I am having a boost problem it will hit 19 then go to 15 then back to 18 or 19 then back to 15 and it will do this about twice if im wot in a gear.....what gives mods are AFC, MBC, Ground wires, AEM intake, open downpipe, 255 fuel pump thanks for any help

 

Check the setting on your AFC. It's probably because there is a bad value for a few cells.

 

I have a problem with my afc too the throttle always says 100 or 80% what value? and why would it affect boost? TY

 

I'm not very familiar with the AFC, I use emanage, but those are probably hi/lo, or start/stop throttle position settings. Buschur uses the SAFC, email them and ask them what's up. They will definately be able to tell you

tymswitzer@buschurracing.com
davidbuschur@buschurracing.com

 

TY also what kind of boost could i do saftley with my mods on 93 gas and on 98 otcane?

 

bump

 

Your AFC might be reading 100 or 80% all the time if you didn't setup your Throttle sensor setting. With mods and if your fuel is tuned properly you could run 21-22. With 98 22-24.

 

How do you set throttle sensor settings?

 

anyone?

 

Go to "Etc Mode" in Main Menu. Then select "Sensor Check" and check the throttle sensor voltage with the throttle fully closed and once with the throttle fully open. Then Go Back and select "Car Select". When the throttle sensor voltage is 0 to 1 V fully closed in the previous step, set the arrow to the upward direction. When the throttle voltage is 3V to 5V, set the arrow to the downward direction.When the arrow is set to the ** mark, no correction is performed by throttle opening.- Hope this helps and you have a AFC II.

 

i have the first afc

 

What exactly does that do?

I've been fighting inconsistent boost for quite some time now, usually at the initial boost at 3000 RPMs. I assumed it was my boost controller considering it doesn't work properly in PSI mods (Profec B - Spec II). I might try this.