Timming / Service Mode

[gtst4d]

I did a shearch and found that to do the timming on a s1 rb25 you can connect the timming light to a wire loop ( i think it said the black one ) at the back of the ignition pack and then put the computer into service mode.

My questions are how do you get the car into service mode and what is the best timming for a lightly modded car ( zorst fmic 9 psi) and dose this sound right. Any help would be great. :confused:

[gtst4d]

i couldnt even find a DIY on this, why hasnt someone with the supreme brains going around done this yet or do people not do there own timming, if i can get all the right details i will put it in the DIY section,thanks.

[gtst4d]

bump , do i need to disconect the throttle position sensor any body know what the service mode is. we are a little bit stuck here.