This is my wife's daily driver, '83 Porsche 924 with 2.0 liter inline four. It had nasty K-Jetronic and transistorized ignition before, I made EFI conversion to it.
14.08.2007: Car has IHI KHF5 turbo installed since winter. Also an intercooler from Porsche 944 Turbo, 440cc Low-Z Denso injectors, oil cooler from Opel Senator and all cutsom pipe-work. Boost is 0.92 bar and compression ratio is stock 9.3:1 and engine is running strong and reliably. Using passive wasted spark coils from Lancia Delta Integrale.
Since last week I uploaded 1.0.73 firmware with 16x14 tables. Car seems to be running smoother on lower (1600-2200) rpms. Could be because of the better resolution of this firmware?
Tachometer is working alright using 1 kOhm pullup and divider of 16.