2009-10-16
The tuning of tha DECS ECU has started and the AFR, VE and ignition timing maps with
temperature corrections have got some reasonable values. In the picture
you can see the first test run from 0 to 200 km/h (0 to 124 mph). The
quartermile took about 16.0 @ 89 mph (143 km/h)and the standing kilometre
about 29.0 @ 114 mph (183 km/h). So, there is a lot to improve. I'm
satisfied, though, that the boost (Map) stays nicely at around 7 psi (0.5
bar) and the air fuel ratio (AFR) is fairly stable under 11.4. The turbo
also spools very good, it gives 3 psi (0.2 bar) at 1800 rpm in first gear.
2010-06-03
I added a circulation pupm to the heater return hose to be able to cool
the engine when tha car is not moving. The electrical fan may help a
little, too. At least they seem to help when I drive in slow street
traffic.
The auto transmission 722.4 got an oil and filter change. I also changed
the 2-3 upshift spring kit part nr A126 270 44 77 (cost 8 euros). The
spring kit is should make the upshift from second to third s little
firmewr. There is a good story about the change job
over there. After a short test drive it seems like the change was
useful.
I was at Alastaro circuit on saturday
2010-05-29 at the V8 Magazine quartermile test runs. It was a rainy day
and I finally got on the strip at about 15.00 after the FHRA guys had
dried the strip for two hours. I could make three runs making new records
every time, then the rain started again and the strip was closed. The best
run was 14.869 s @ 95.11 MPH (153.06 km/h). The best run in 2009
with the KE-Jetronic was 15.152 @ 91,98 (148.03). The boost was
about 11-13 psi (0,75-0,85 bar). The mixture was a little rich above 5500
RPM. The kickdown did not work, I propably messed the wires some how at
the oil change. The estimated power on the wheels is 198 hp using a weight
of 2954 lbs (1340 kg). The actual weight is propably a little higher.
The best run of the year was the
2010-08-28 driven 14,754@95,15MPH (153,03km/h). |