Safc2 Throttle Input (dyno Tune) Q

[negativecamber]

hey all

i instaled my SAFC2 into my Rb20det S13 silvia with R32 ecu also. i could not locate the throttle wire on the ecu to hook up to the safc2. everything work fine on the unit and the rpm signal is working perfect also.

my question is, if i dont have the throttle % wire connected, will it make it harder to tune or affect anything while trying to tune it? the wire i was meant to splice into isn't even in my wiring harness lol.

any help would be appreciated because i am having a dyno tune on tuesday next week.

[WogsRus]

uhhh you can't tune without it. YOu need it to tell the SAFC II which map point to read from. It is an RPM Vs Correction table. You have to have it.

[negativecamber]

i have the RPM signal man, just not the throttle percentage. i have the AFM reading also.

[WogsRus]

opps me bad, a bit drunk, should have read it properly, yeah no the Tp signal is for indicationonly.

[negativecamber]

cheers big ears

i heard that it was only for show to have it but then again i thought it might have a certain thing for full throttle tuning.

[Strik3r]

that is incorrect, you need the throttle signal.....

when you tune the SAFC2, you tune for high and low throttle.. the safc maps differently depending on how far you push the accelerator.. it also interpolates between high and low throttle points for when its in between... You *might* be able to half-ass tune it with no throttle signal, but to do it properly you need it.

[negativecamber]

that is incorrect, you need the throttle signal.....

when you tune the SAFC2, you tune for high and low throttle.. the safc maps differently depending on how far you push the accelerator.. it also interpolates between high and low throttle points for when its in between... You *might* be able to half-ass tune it with no throttle signal, but to do it properly you need it.

shit a brick, how do i find the throttle signal if there is no wire where is should be on the ecu????????

[negativecamber]

problem solved!

a mate of mine helped me with the correct wire and now it is all good.