S14 SR swap done, one lil problem

[Lith]

I found a site where the guy outlines how to install an APEXI AVC-R into his S14. The thing is, he's from UK, so the S14 SR20DET engine is actually stock.
Since the AVC-R is a nice little boost controller from APEXI, it uses the RPM signal as well. So you need to wire that in as well.

Here's the link: http://www.jull.co.uk/mods/avcr.html
if you scroll all the way down to the bottom of that page, he points out that there 2 difference S14 SR ECU's out there. Check which one you have and you'll find the RPM signal. Obviously the total number of pins on each ECU differs. The top ECU lists pin #7 as the RPM signal. But the bottom ECU (S14a ECU) is quite a bit different.

I'm not sure if that's gonna be helpful or not, but it's worth a try

edit: I found another s14a SR ecu pinout (which happens to be the 97-98 Silvia ECU, or 93-98 European SR ECU and the 99-02 S15 ECU)
http://www.plxdevices.com/ECUDatabas...0DET_99_02.pdf