Everything was ready for the first start. I made some final
checks for fuel leaks and made sure all the electrical connections
were tight and correct. With my old battery connected to
boost the power I spun the engine over with the ECU off
to get some oil around the engine as it had been sitting
for a couple of months. Once I saw some oil pressure I switched
on the ECU, calibrated the TPS via the menu and tried again.
The engine was now turning slower as it was cold and the
batteries were getting tired, but after 4 or 5 revolutions
it caught and stuttered into lift with a slow idle. I was
actually quite shocked. I had expected it to take some time
adjusting the cranking pulse widths and the required fuel
figure. Juggling things to get it to run before putting
settings back and making changes where needed. As such,
I had to go and find my balancing tool to set the TBs
relative to each other which smoothed the idle out massively.
The next job was to get the fuelling level right and to
adjust the throttle stop. My base starting map had far too
much fuel in it, but as the guide instructed I adjusted
the require fuel figure which was effectively like reducing
the map. As I reduced the fuel I found I needed to back
off the throttle stop as the engine was no longer being
drowned with fuel. After a few cycles of this I got to a
point where the fuelling was right, slightly on the rich
side (which is normal for a TB set-up) and the TBs
were balanced. This had taken a few stop / starts to prevent
the engine from overheating / upsetting the neighbours.
The important thing was that everything was working. The
ECU functioned as it should and after some practice I had
the hang of the tuning software. I felt confident that I
could fine tune the settings quickly enough to bed the new
cams in. It was time to pull half of the engine apart again.