SAFC-II Decel Setting
 

Ok so when ever I put the clutch in on my car and the RPM's are above 3000-4000 the rpm falls but doesnt go back to idle, it just dies. I have an atmosphereic BOV, and the motor is a turbo'd Nissan KA24DE. I running an Apexi SAFC-II and I am just wonder what to do to the "decel" feature to prevent this from happening. Now i have to blip the throttle everytime to keep the rpms from falling off completely, and its getting embarassing when i forget and end up kiling it. In the SAFC-II "settings" then under "decel" this is what it is set at now:

Thr ****
Ne1 1.5%
Ne2 4.0%

So what should I try putting these numbers to??

**EDIT**

I tried reading the manual but it was about as clear as a frosted window

Re: SAFC-II Decel Setting
 

I found this site which seems pretty straight forward, but if anyone has any other tips that would be great too!

http://www.zeroyon.com/index/content/view/64/47/

Re: SAFC-II Decel Setting
 

**UPDATE**

Tried playing with this setting, all that happened is i flooded the ---- out of my motor at idle haha, so it wouldnt restart, suddenly bliping the throttle doesnt seem so bad ;D

If anyone has any helpful tips let me know! I think i want to give this a second try, but no sence in just doing it the same way

Re: SAFC-II Decel Setting
 

tighten your BOV so it stays closed at idle or recirculate it

Re: SAFC-II Decel Setting
 

I'm looking into getting the HKS adapter piece to make it recirculate, but wouldnt just tightening the BOV cause compressor surge?

Re: SAFC-II Decel Setting
 

probably not, when your shifting there's vacuum in the intake mani so it would still open.

Re: SAFC-II Decel Setting
 

try adjusting both of your throttle points.. set you Hi thrott higher and your low throttle lower.. then turn the car on.. after then then adjust the dec air setting throttle to 1%, make sure your keeping a decently small gap btw NE1 and NE2, dont make it too big otherwise your going to have to reset your tuning points for NE1 and NE2 and make it closer or farther depending on the settings.. after youd o that try adjusting the throttle points so they correspond.. i know its hard but different setups and differnet BOV's ect seem to idle the car differently..
*update
remember to try and work on it when the car is cold, safc can be tricky b/c of the map change of the ecu so sometimes the make is *squashed* and made smaller running the car a little bit more advance.. or less retarded however you want to say it... make sure your fuel increments are not to far apart too..

Re: SAFC-II Decel Setting
 

go to ka-t.org... check in the tuning section and there is a thread called the ultimate safc guide.... it's got all you need to know.

Re: SAFC-II Decel Setting
 

actually coincidently i just came across that thread last night, but turns out my car has more problems now so decel is now at the bottom of my list

heres what i mean:
https://www.homemadeturbo.com/forum/...?topic=59843.0