EFIDynoTuning Forum

efloth

Ahh O2s have to be downstream from the turbo. That makes sense thanks. So I'll basically build a complete straight pipe turbo system and tear it all off every two years.

On the tuning side of things, is it as simple as scaling spark and VE table to load beyond 1?

efloth

Seem like a bad idea? Not trying to build a drag car just looking to add some HP for towing on my 300 Inline 6 1-4k rpm. Pulled some inspiration from here: https://www.youtube.com/watch?v=SZoV6E5DDXI

Living in California wanting to install a turbo that could be easily removed for bi-annual inspection.

Any thoughts?

efloth

I believe this is it and to my surprise it is already zero. I can see why you didn't bother adding it in.

Table_a92e:
a92e: 00,00,00,00,00,00 table 0, 0, 0, 0, 0, 0
a934: 00,00,00,00,00,00 table 0, 0, 0, 0, 0, 0
a93a: 00,00,00,00,00,00 table 0, 0, 0, 0, 0, 0
a940: 00,00,00,00,00,00 table 0, 0, 0, 0, 0, 0
a946: 00,00,00,00,00,00 table 0, 0, 0, 0, 0, 0
a94c: 00,00,00,00,00,00 table 0, 0, 0, 0, 0, 0
a952: 00,00,00,00,00,00 table 0, 0, 0, 0, 0, 0
a958: 00,00,00,00,00,00 table 0, 0, 0, 0, 0, 0

efloth

Just curious if HEGO Bias (FN1353) is not present in A1C or is it just not broken out in the XDF? TIA

efloth

Added correction factor variable to allow for smaller corrections and prevent overcorrecting. Set to 100% to disable.

efloth

NVM I see it now. Thanks for your patience with me. offcomp is .6306

efloth

decipha wrote: ↑2021 Jul 21, 19:42 it matches perfectly

.8722 is for the high slope only

The offset gets multiplied by .6306

That's what you are telling me .6306 is low slope

EDIT: offcomp not low slope. I'm with you now. Thanks for the help guys.

efloth

Ok so use low slope numbers for AHISL?

efloth

I don't think you understood. The offsets I posted for 30 psi (speed density) were from here: http://efidynotuning.com/injdata.htm

if I take the high slope numbers in the pdf you linked * .8722 they don't match with decipha's. Trying to figure out what gives. Speed density is single slope so the other info is irrelevant in this case.

efloth

Diving into this today: How do we explain this discrepancy? First chart is Decipha's listed offsets for Speed Density @ 30PSI. .8722 is the multiplier for 30 PSI in the document you linked. @ 15v take .454/.8722 = .5205 != .721

Should I just take .5205 * 1.1883 to get speed density offset for 15v @ 55PSI? Hope this makes sense.

Code: Select all

FRPP 80 lb/hr @ 30psi
LU80
Siemens Deka 80 lb/hr @ 30psi BASE
K-Constant	30.00
High Slope	65.552
Breakpoint	0.00002119
Low Slope	65.400

VOLTAGE OFFSET
voltage	ms
16.00	0.454
15.00	0.454
14.00	0.505
13.00	0.569
12.00	0.641
11.00	0.720
10.00	0.812
8.00	1.120
6.00	1.772
0.00	1.772
0.00	1.772
0.00	1.772

Code: Select all

FRPP 80 lb/hr @ 39.15psi
LU80
Siemens Deka 80 lb/hr
K-Constant	30.00
High Slope	75.157
Breakpoint	0.00002421
Low Slope	101.459

VOLTAGE OFFSET
voltage	ms
16.00	0.721
15.00	0.721
14.00	0.801
13.00	0.903
12.00	1.017
11.00	1.142
10.00	1.288
8.00	1.777
6.00	2.811
0.00	2.811
0.00	2.811
0.00	2.811

EFIDynoTuning Forum

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