If you've just pushed the pipe on then yes, it will need a cable tie around it to stop it expanding and leaking - and yes ... it sounds like a high pitched tssssh
lol this isnt quite what i was looking for.... it proves our MAFs are not 69ishmm though. the timing doesnt look very advanced.
the bore for theses logs is 69.4mm
running T9 B9 WITH wmi
i thought id check intake temps...
ill take the housing in tomorrow and get 1mm bored out. im looking for 225g/s at the most.
the bore for theses logs is 69.4mm
running T9 B9 WITH wmi
Code:
Monday 16 March 2009 17:26:19
1ML 906 032 A 1.8l R4/5VT 01 0001
Group A: '003 Group B: '020
RPM Mass Flow Load Ign. Timing Idle Stabilization Idle Stabilization Idle Stabilization Idle Stabilization
TIME TIME
MARKER STAMP /min g/s % °BTDC STAMP CF CF CF CF
737.8 2000 34.94 23.9 23.3 738.2 0 0 0 0
738.61 2240 54.06 98.8 18.8 739.01 0 0 0 0
739.41 2600 81.78 100 13.5 739.81 0 0 0 0
740.23 3080 117.19 100 6 740.63 0 0 0 0
741.03 3640 164.5 100 6.8 741.43 0 0 0 0
741.83 4240 181.53 100 12 742.23 0 0 0 0
742.64 4800 194.69 100 12 743.04 0 0 0 0
743.44 5320 217.03 100 9.8 743.84 0 3 0 0
744.24 5760 226.86 99.6 11.3 744.64 0 3 0 0
745.04 6160 228.67 100 12 745.46 0 2.3 0 0
745.86 6520 234.56 99.6 12.8 746.26 0 1.5 0 0
746.66 6840 235 100 13.5 747.08 0 1.5 0 0
747.46 5880 79.5 46.7 30 747.86 0 0 0 0
748.27 5640 223.67 100 12 748.67 0 0 3 0
Code:
Monday 16 March 2009 17:42:45
1ML 906 032 A 1.8l R4/5VT 01 0001
Group A: '031 Group B: '115
Lambda Factor Lambda Factor Bin. Bits Bin. Bits RPM Load Absolute Pres. Absolute Pres.
TIME TIME
MARKER STAMP STAMP /min % mbar mbar
605.43 1.187 0.945 605.03 1720 15 1000 1020
606.25 1.257 0.945 605.85 1720 15 1000 1020
607.05 1.273 0.945 606.65 1680 15 1000 1020
607.87 0.867 0.977 607.47 1800 42.9 1050 1010
608.67 0.945 0.945 608.27 2280 97.7 1940 1200
609.47 0.945 0.938 609.07 3080 156.4 2340 1780
610.28 0.867 0.875 609.88 4560 191.7 2460 2520
611.08 0.852 0.86 610.68 5520 191.7 2380 2360
611.88 0.836 0.86 611.48 6400 187.2 2240 2230
612.7 0.899 0.93 612.3 6720 20.3 1000 2140
613.5 1 1.047 613.1 4880 14.3 1000 1160i thought id check intake temps...
Code:
Monday 16 March 2009 17:55:15
1ML 906 032 A 1.8l R4/5VT 01 0001
Group A: '011
RPM Temperature Temperature Ign. Timing
TIME
MARKER STAMP /min °C °C °BTDC
2.82 2160 96 30 7.5
3.22 2200 96 30 12.8
3.63 2840 96 29 28.5
4.03 3520 96 28 26.3
4.43 4320 96 27 22.5
4.83 5920 96 27 17.3
5.23 5120 96 24 5.3
5.63 4520 96 22 4.5
6.03 3560 96 21 25.5
6.45 3920 96 21 24
6.85 4360 96 23 14.3
7.25 5000 96 24 9.8
7.65 5440 96 24 12
8.05 5800 96 24 9
8.45 6200 96 24 12.8
8.86 6280 96 24 4.5
9.26 5640 96 21 6
9.66 5000 96 21 4.5
10.06 4320 96 20 3ill take the housing in tomorrow and get 1mm bored out. im looking for 225g/s at the most.
yes Dave... to be honest with you i was half expecting near perfect figures but im sort of glad i didnt get them.. timng isnt great is it though but its pulling like a train
i think i need to be nearer 72mm but i dont want to just go for it, i think ill do it in 0.5mm stages to start with
i think i need to be nearer 72mm but i dont want to just go for it, i think ill do it in 0.5mm stages to start with
Do you normally floor it at 2200 odd rpm? If not, just try starting your power runs a touch later.... say 2500.
TBH i normally try to do the run from as low as the conditons will allow... good thinking though, those low revs dont tell us much do they.
what figures do you think i should tune this housing to, i think its a good idea to have it running slightly richer, do you?
its a long way out on the long term fuel trim now... something like -7%
what figures do you think i should tune this housing to, i think its a good idea to have it running slightly richer, do you?
its a long way out on the long term fuel trim now... something like -7%
Starting the run unnecessarily low is going to build combustion chamber heat and retard your timing. (I do mine from 3750, but that's another turbo
) What do you think you gain from having a bigger housing? Fueling looks good to me, I wouldn't worry too much about the long term trim at that level.
the housing should be reading 219g/s Dave, ive sleeved it (starting thick so i have a smaller bore) from approx 74mm to 69.4mm so its now reading too high. i was going to bore it out so it was more inline with the correct figures. at the minute im fooling it thinking there is more air coming in.
ill start the runs a bit higher in the future
ill start the runs a bit higher in the future
from the previous calcs... without going back i believe it was 12.5:1 with a IDC of 83.3% (446cc)
maybe i should do some more calcs on the new figures but the previus ones should still be OK?
maybe i should do some more calcs on the new figures but the previus ones should still be OK?
Last edited:
hmmm
John/Dave you might put me right here but using an IDC of 83.82% and a flow of 446cc i should be seeing a reading of 218g/s for 12.5:1
to actually have 12.5:1 A/F and an IDC of 83.82% i must be flowing that amount of air but why is it not showing that on the MAF????
from before..... and running Nicks housing backs this up?
234.56 + 60 = 294 bhp
So you can adjust you a/f by playing with maf housing internal bore.. intresting
So you can adjust you a/f by playing with maf housing internal bore.. intresting
234.56 + 60 = 294 bhp
So can you adjust you a/f by playing with maf housing internal bore.. intresting
sort of... the Lambda will pull it back if its not outside the 10%
Personally, I think I'd redo the figures before going as far as trying to tweak the MAF reading.
See what John says.
See what John says.
B3LSY
Guest
So you can adjust you a/f by playing with maf housing internal bore.. intresting
The Sphincter maf. (TM)
i was impatient and brought my car to work.. the logs on the way show the airflow (with the lower a/f ratio) should be about 216g/s
ive given the housing back and he's going to take 0.6mm out so the bore will be 70mm.
im on a course all day so will run some logs later.
ive given the housing back and he's going to take 0.6mm out so the bore will be 70mm.
im on a course all day so will run some logs later.
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