Paging ChrisB
Thread Starter
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
Likes: 1
Paging ChrisB Hi Chris,
I am looking at your spreadsheet for injector scaling at the following URL:
http://www.speeddemonmotorsports.com...ectorscale.xls
I have a 98 PCM. Will the default values you have in the table work for my PCM or do I need to change anything?
I am running Delphi 37.27# injectors rated at 43.5FP. Here are the particulars:
Part Number Delphi D3165BA (Lucas old 5203002, Lucas New 621037)
Static Flow Rate: 37.27 lb/hr @ 43.5PSI (300kPa) or 282gm/min
Dynamic Flow Rate: 8.42 gm/pulse - 2.5ms pulse width and 10ms repetition rate
Coil Resistance: 15.9 Ohms / High Impedance / High-Z (No ECM driver modifications required)
I entered:
Injector Rated Flow Rate: 37.27
Your Fuel Rail Pressure: 58
Injector Rated Fuel Pressure:43.5
These are the values I derived from your spreadsheet:
MAP (kPa) 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
Injector Flow (g/sec) 6.837449039 6.880062096 6.922412839 6.964506055 7.006346385 7.047938333 7.08928627 7.130394442 7.171266971 7.211907865 7.252321017 7.292510213 7.332479136 7.372231369 7.411770398 7.451099618 7.490222332
Will these values work ok for my 98 PCM? Did I do anything wrong?
I am scaling the injectors this afternoon. Thanks so much for your help!!
Chris
I am looking at your spreadsheet for injector scaling at the following URL:
http://www.speeddemonmotorsports.com...ectorscale.xls
I have a 98 PCM. Will the default values you have in the table work for my PCM or do I need to change anything?
I am running Delphi 37.27# injectors rated at 43.5FP. Here are the particulars:
Part Number Delphi D3165BA (Lucas old 5203002, Lucas New 621037)
Static Flow Rate: 37.27 lb/hr @ 43.5PSI (300kPa) or 282gm/min
Dynamic Flow Rate: 8.42 gm/pulse - 2.5ms pulse width and 10ms repetition rate
Coil Resistance: 15.9 Ohms / High Impedance / High-Z (No ECM driver modifications required)
I entered:
Injector Rated Flow Rate: 37.27
Your Fuel Rail Pressure: 58
Injector Rated Fuel Pressure:43.5
These are the values I derived from your spreadsheet:
MAP (kPa) 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
Injector Flow (g/sec) 6.837449039 6.880062096 6.922412839 6.964506055 7.006346385 7.047938333 7.08928627 7.130394442 7.171266971 7.211907865 7.252321017 7.292510213 7.332479136 7.372231369 7.411770398 7.451099618 7.490222332
Will these values work ok for my 98 PCM? Did I do anything wrong?
I am scaling the injectors this afternoon. Thanks so much for your help!!
Chris
Thread Starter
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
Likes: 1
Actually I think two of the fields in the spreadsheet are mixed up. The lb/hr and the rated fuel pressure.
Here is what I got switching the two:
Stock Values
MAP (kPa) 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
MAP (PSI) 0 0.7252 1.4504 2.1756 2.9008 3.626 4.3512 5.0764 5.8016 6.5268 7.252 7.9772 8.7024 9.4276 10.1528 10.878 11.6032
Actual Fuel Pressure 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58
New Injector Values
Rated Flow (lb/hr) 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27
Rated Pressure (PSI) 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5
Final Table
MAP (kPa) 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
Enter these Values in PCM: Injector Flow (g/sec) 5.422496822 5.456291467 5.489878083 5.523260464 5.556442292 5.589427138 5.62221847 5.654819653 5.687233958 5.719464563 5.751514555 5.783386937 5.81508463 5.846610474 5.877967236 5.909157606 5.940184206
Does this scaling look right to you guys for 98 PCM and Delphi 37.27 injectors?
Here is what I got switching the two:
Stock Values
MAP (kPa) 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
MAP (PSI) 0 0.7252 1.4504 2.1756 2.9008 3.626 4.3512 5.0764 5.8016 6.5268 7.252 7.9772 8.7024 9.4276 10.1528 10.878 11.6032
Actual Fuel Pressure 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58
New Injector Values
Rated Flow (lb/hr) 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27 37.27
Rated Pressure (PSI) 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5 43.5
Final Table
MAP (kPa) 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
Enter these Values in PCM: Injector Flow (g/sec) 5.422496822 5.456291467 5.489878083 5.523260464 5.556442292 5.589427138 5.62221847 5.654819653 5.687233958 5.719464563 5.751514555 5.783386937 5.81508463 5.846610474 5.877967236 5.909157606 5.940184206
Does this scaling look right to you guys for 98 PCM and Delphi 37.27 injectors?
