I have been running a Turbosmart Eboost Street boost controller on my FG Turbo for a year now, but I have not yet hooked up the FGs tacho pulse wire to the boost controller. A RPM signal will allow the TS EBS to be adjusted with high RPM boost roll off compensation. Who can tell me which wire is the tacho RPM signal wire ? or, I may be forced to poke around with a scope until I find it :( chz.