gesTTalt

I been tweaking my DBR chip to accomodate cheap Cali 91 oct gas (chip was originally tuned for 93 oct).

How much retard can I run? Here's a run at around 75*, 92 oct (91+toluene). Can I advance timing a little more?

<img src="http://pictureposter.audiworld.com/24538/cf_factors_dbr_7794_image001.jpg">

Maximum CF is around 3

RPM CF1 CF2 CF3 CF4
1520 0 0 0 0
1240 0 0 0 0
1240 0 0 0 0
1840 0 0 0 0
1760 0 0 0 0
1680 0 0 0 0
1640 0 0 0 0
1520 0 0 0 0
1440 0 0 0 0
1480 0 0 0 0
1600 0 0 0 0
1720 0 0 0 0
1840 0 0 0 0
1960 0 0 0 0
2120 0 0 0 0
2280 0 0 0 0
2480 0 0 0 0
2680 0 0 0 0
2920 0 0 0 0
3240 0 0 0 0
3520 0 0 0 0
3880 0 3 0 3
4200 0 3 0 3
4480 3 3 0 3
4760 3 2.3 3 2.3
5040 3 2.3 3 2.3
5280 2.3 2.3 3 2.3
5440 2.3 1.5 3 1.5
5640 2.3 1.5 2.3 1.5
5840 1.5 1.5 2.3 1.5
6040 1.5 0.8 2.3 0.8


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<img src="http://pictureposter.audiworld.com/24538/image012.jpg">

Imolavirus@BuehnEngineering

what kind of knock are you getting?

gesTTalt

All runs done in 3rd gear

75* using about 92 octance

RPM CF1 CF2 CF3 CF4
1520 0 0 0 0
1240 0 0 0 0
1240 0 0 0 0
1840 0 0 0 0
1760 0 0 0 0
1680 0 0 0 0
1640 0 0 0 0
1520 0 0 0 0
1440 0 0 0 0
1480 0 0 0 0
1600 0 0 0 0
1720 0 0 0 0
1840 0 0 0 0
1960 0 0 0 0
2120 0 0 0 0
2280 0 0 0 0
2480 0 0 0 0
2680 0 0 0 0
2920 0 0 0 0
3240 0 0 0 0
3520 0 0 0 0
3880 0 3 0 3
4200 0 3 0 3
4480 3 3 0 3
4760 3 2.3 3 2.3
5040 3 2.3 3 2.3
5280 2.3 2.3 3 2.3
5440 2.3 1.5 3 1.5
5640 2.3 1.5 2.3 1.5
5840 1.5 1.5 2.3 1.5
6040 1.5 0.8 2.3 0.8



93* running 92 oct
Run2

rpm cf1 cf2 cf3 cf4 avg cf
880 0 0 0 0 0.00
1000 0 0 0 0 0.00
1120 0 0 0 0 0.00
1240 0 0 0 0 0.00
1440 0 0 0 0 0.00
1560 0 0 0 0 0.00
1760 0 0 0 0 0.00
1960 0 0 0 0 0.00
2160 0 0 0 0 0.00
2400 0 0 0 0 0.00
2640 0 0 0 0 0.00
2920 0 0 0 0 0.00
3240 0 0 0 0 0.00
3640 0 0 0 3 0.75
4040 3 3 3 3 3.00
4400 3 3 3 3 3.00
4800 3 3 3 1.5 2.63
5120 5.3 2.3 2.3 4.5 3.60
5440 5.3 2.3 2.3 4.5 3.60
5720 5.3 2.3 2.3 4.5 3.60
6000 4.5 1.5 1.5 3.8 2.83
6240 4.5 1.5 1.5 3.8 2.83
6480 4.5 1.5 0 0 1.50

avg cf range .75 to 3.60 across all 4 cyl


Run 3
rpm cf1 cf2 cf3 cf4 avg cf
1240 0 0 0 0 0.00
1320 0 0 0 0 0.00
1400 0 0 0 0 0.00
1480 0 0 0 0 0.00
1600 0 0 0 0 0.00
1720 0 0 0 0 0.00
1840 0 0 0 0 0.00
1960 0 0 0 0 0.00
2080 0 0 0 0 0.00
2240 0 0 0 0 0.00
2440 0 0 0 0 0.00
2600 0 0 0 0 0.00
2840 0 0 0 0 0.00
3120 0 0 0 0 0.00
3480 0 0 0 3 1.00
3800 3 3 3 3 3.00
4160 6 3 3 3 3.00
4400 6 6 3 2.3 3.77
4760 6 6 2.3 2.3 3.53
5040 5.3 6 4.5 2.3 4.27
5320 4.5 5.3 4.5 1.5 3.77
5560 4.5 5.3 4.5 1.5 3.77
5760 4.5 5.3 3.8 1.5 3.53
5960 3.8 5.3 2.3 0.8 2.80
6160 3 3.8 1.5 0 1.77
6360 1.5 3 0.8 0 1.27
6560 0.8 2.3 0 0 0.77

avg cf across all 4 cyl = .77 to 4.27

diagnosticator

Looking good!