OK - been a few weeks without any updates while Dale and I have been busy and I wanted to give myself a breather from the car so as to regain some motivation.
First of all we decided to inspect the plugs to gauge what the fuelling might be doing and swap them out for a new set of NGK BK7REs while they were out. Here's how the old ones looked after 400 miles on the new engine (1-4, left to right):
Once these were in we then swapped my Bosch LSU-4 wideband sensor out for a new one, which it turns out was f--ked. As soon as the new sensor was fitted I was able to see proper readings on my AFR gauge once again
Here's how the old one looked:
With that fixed I then decided to swap out my MAF for a new replacement I had lying around from GSF as a spare when I last went to the Nurburgring to see if this has any impact on my pre-cat lambda fault, bearing in mind I've already replaced this sensor and a few people seem to think a new MAF sorted it. Seeing as I had one lying around its an easy one to cross off the list.
In light of all the reliability issues I've had with my meth I've decided to run without it until I replace it with the AEM kit - I just don't feel I can trust it. My ignition timing offset has been reset to 0 and I've pulled the fuse on the controller, leaving the bottle empty so as it can't seep into my intercooler again...
We also intended to inspect the pre-cat lambda wiring for continuity etc though we weren't able to find a wiring diagram for the ME7 ECU in autodata, only the 7.5 was coming up (though no evidence of a wideband sensor). Does anyone know where we might be able to source one?
So, with a new set of plugs, MAF, a working wideband sensor, and disconnected meth I set out to collect some new logs, captured on a dual carriageway in 4th gear, starting at steady state cruise of ~3,500 RPM before hitting WOT to just past 5,000 (car in front slowed me down)
Code:
Sunday 26 June 2011 16:19:24
6K0 906 032 AA 1.8L 20VT EU3 05 0002
Group A: '002
RPM Load Inj. On Time Mass Flow
TIME
Marker STAMP /min % ms g/s
54.77 3400 44.4 4.1 28.56
55.97 3440 42.9 4.1 27.72
57.17 3480 39.8 3.69 25.64
58.37 3440 31.6 2.87 20.97
59.57 3440 31.6 2.87 20.64
60.77 3440 31.6 2.87 20.75
61.97 3480 101.5 10.25 81.39
63.17 3720 173.7 20.09 120.86
64.37 3920 172.9 20.91 130.53
65.56 3640 26.3 0 14.14
66.77 3600 99.2 12.3 79.61
67.96 3800 168.4 25.42 120.64
69.27 4080 168.4 24.6 130.89
70.68 4320 169.2 24.19 139.5
72.07 4520 169.9 24.19 145.72
73.36 4680 170.7 24.19 152.61
74.56 4880 170.7 23.78 158.44
75.76 4960 169.9 23.78 161.42
76.96 5160 168.4 23.37 163.67
78.16 5240 168.4 23.37 169.03
Code:
Group B: '020
Idle Stabilization Idle Stabilization Idle Stabilization Idle Stabilization
TIME
STAMP CF CF CF CF
55.17 0 0 0 0
56.37 0 0 0 0
57.57 0 0 0 0
58.77 0 0 0 0
59.97 0 0 0 0
61.17 0 0 0 0
62.37 0 0 0 0
63.57 0 0 0 0
64.77 0 0 0 0
65.96 0 0 0 0
67.17 0 0 0 0
68.37 0 0 0 0
69.76 0 0 0 3
71.17 0 0 0 3
72.56 0 0 0 3
73.76 0 0 0 2.3
74.96 0 0 0 0.8
76.16 0 0 0 0.8
77.36 0 0 0 0
78.56 0 0 0 0
Code:
Group C: '118
RPM Temperature Load Absolute Pres.
TIME
STAMP /min °C % mbar
55.57 3440 36 0 1140
56.77 3440 36 0 1130
57.97 3440 36 0 1100
59.17 3440 37 0 1080
60.37 3440 37 0 1080
61.57 3440 37 0 1070
62.77 3640 38 46.7 2010
63.97 3840 37 39.6 1990
65.17 3760 35 0 1200
66.37 3560 37 0 1040
67.56 3760 39 73.7 1980
68.87 4000 38 80 1970
70.16 4200 38 81.6 1960
71.67 4440 39 77.3 1960
72.96 4640 39 93.3 1940
74.16 4800 40 87.1 1930
75.36 4920 41 80.4 1930
76.56 5080 42 80 1930
77.76 5240 43 85.9 1920
78.96 5240 43 0 1850
I was happy to see no significant timing pull (remembering I've overridden requested boost by winding back my manual MBC to ~1 bar) and the car felt less hesitant and smoother than before, also bearing in mind it was ~30 deg ambient heat when collecting these logs.
Keeping an eye on my AFR gauge I'm seeing high 11s/low 12s on WOT and it smells VERY rich, with visible black smoke when you rev hard sat still.
All in all though it appears to be looking OK while I run it in - though curious to gather peoples opinions on the above figures.
The engine has now covered 400 miles so only really another 100 before I'm looking to get the map tweaked as it should be with a bit more boost, I'd just like to know it's safe to continue running in as it is.
I think I'll opt to get the map set to run without the water/meth and just leave this disconnected until I go BT, where I'll replace it with the AEM kit in one hit.
Bill also mentioned concerns that my injectors may now max out on a ported head and 1.85L bottom end so we'll have to keep an eye on this but I don't see the point in fitting my 550CCs and spending out on a whole new map when I intend to change it in the future anyway. If I need to keep the power capped to stay on these injectors (BAM 386CC) then so be it until I make the plunge into BT territory when funds permit.