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baseinjectordata [2009/02/16 07:56]
twdorris
baseinjectordata [2024/03/15 11:16] (current)
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 ====== Injector Data Compilation ====== ====== Injector Data Compilation ======
  
-These values were gathered from various sources. ​ These may not match exactly with the values ​specified in the DSMLink user'​s ​manual.  ​Regardless of which set of values you start with for your injectors, you will still want to run through ​the dial in procedure outlined in the DSMLink user's manual.+These values were gathered from various sources. ​ These may not match exactly with the values ​you've seen elsewhere, but they should be fairly close. ​ The problem is that each injector can behave a little differently from another of the same size and manufacturer. ​ So there'​s ​some variation that simply can't be accounted for in all cases.  ​Start with the values listed below and fine tune from there.
  
-All of these values assume stock base fuel pressure (37psi for 1Gs and 43.for 2Gs).+All of these values assume stock base fuel pressure (37psi for 1Gs and 42.for 2Gs).  Deadtime is listed as an adjustment to be entered into the ECMLink application,​ which is then applied on top of the calculated stock adjustment. ​ For more details on how to adjust for varying fuel pressure or how to use the fuel adjustment tab in ECMLink, see the [[fuelsettingshelp|Fuel Settings page]].
  
  
-===== E85 Note ===== +^ Brand/Vendor ​             ^  ​Size ​    ^  Global ​  Deadtime ​        ​^Notes ​ ^ 
- +                          ​ (cc)     ​ (%)     ​ (µsec) ​          ​  ​^
-These values are for **GASOLINE ONLY** - they do NOT apply to cars running E85!  E85 has a stoichiometric A/F of 9.765:1 while gasoline is 14.7:​1. ​ So E85 should require around 51% more fuel than gasoline (14.7 / 9.765 = 1.51). +
- +
-  Stock Injector ​Size / (New Injector Size / ( ( percentage of E85 * 0.51 ) + 1 )) - 1 +
- +
-So for 850s (as in my car) with pure E85, I would run: +
-   +
-  450 / ( 850 / ( ( 1.0 * 0.51) + 1 ) ) -1 = 450 / ( 850 / 1.51 ) - 1 = 450 / 567 - 1 = -0.20 or -20% +
- +
-Using that formula works perfectly on my car.  For even more E85 data, see the [[e85fuel|E85 notes]] page. +
- +
-===== Basic table ===== +
- +
- +
-Brand/​Vendor ​             ​Size (cc) ^ Global ​(%) ^ Deadtime ​(µsec) ^ Notes ^+
 |Denso (stock) ​             |        450|           ​0| ​               0| | |Denso (stock) ​             |        450|           ​0| ​               0| |
 |Denso ​                     |        660|         ​-31| ​             180| | |Denso ​                     |        660|         ​-31| ​             180| |
Line 41: Line 27:
 |PTE / Delphi ​              ​| ​      ​1000| ​        ​-51| ​             450|Modified GM Rochester 17113744 injector. Actual flow: 940cc| |PTE / Delphi ​              ​| ​      ​1000| ​        ​-51| ​             450|Modified GM Rochester 17113744 injector. Actual flow: 940cc|
 |RC                         ​| ​       550|         ​-18| ​             180| | |RC                         ​| ​       550|         ​-18| ​             180| |
 +
 +
 +
 +===== E85 Note =====
 +
 +These values are for **GASOLINE ONLY** - they do NOT apply to cars running E85!  E85 has a stoichiometric A/F of 9.8526:1 while gasoline is 14.7:​1. ​ So E85 should require around 49% more fuel than gasoline (14.7 / 9.8526 = 1.49). ​ So for 850s (as in my car) with pure E85, I would run:
 +  ​
 +  450 / ( 850 / 1.49 ) - 1 = 450 / 570 - 1 = -0.21 or -21%
 +
 +Using that formula works perfectly on my car.  For even more E85 data, see the [[e85fuel|E85 notes]] page.
  
  
 ----- -----
-E85 Flow Chart. - EDITWhat is this table of?  We need some explanation here, please - TWD+E85 Air Flow Support ​Chart: 
 + 
 +This chart outlines the approximate max airflow which can be supported for given duty cycle and injector flow rate on E85. 43.5psi base fuel pressure is assumed.
  
-^ Injector Size              ^ 100% IDC(lbs/​min) ^80% IDC (lbs/min) ^ Global (%)  +^ Injector Size              ^ 100% IDC(lbs/​min) ^80% IDC (lbs/min) ^ Global (E85)| 
-^ Global +^Global 
-|390cc |21.80 lbs/​min |17.44 lbs/min |+50.00% +|390cc |21.80 lbs/​min |17.44 lbs/​min | ​Not a good idea | 
-|450cc |25.15 lbs/​min |20.12 lbs/min |+30.00% +|450cc |25.15 lbs/​min |20.12 lbs/​min | ​Not a good idea | 
-|550cc |30.74 lbs/​min |24.59 lbs/min |+6.36% +|550cc |30.74 lbs/​min |24.59 lbs/​min | ​Not a good idea | 
-|580cc |32.42 lbs/​min |25.94 lbs/min |+0.86% +|580cc |32.42 lbs/​min |25.94 lbs/​min | ​Not a good idea | 
-|650cc |36.33 lbs/​min |29.07 lbs/min |-10.00% +|650cc |36.33 lbs/​min |29.07 lbs/​min | ​Not a good idea | 
-|660cc |36.89 lbs/​min |29.51 lbs/min |-11.36% +|660cc |36.89 lbs/​min |29.51 lbs/​min | ​Not a good idea | 
-|680cc |38.01 lbs/​min |30.41 lbs/min |-13.97% +|680cc |38.01 lbs/​min |30.41 lbs/min |Not a good idea  | 
-|720cc |40.24 lbs/​min |32.20 lbs/min |-18.75+|720cc |40.24 lbs/​min |32.20 lbs/min |-6.9%| 
-|750cc |41.92 lbs/​min |33.54 lbs/min |-22.00+|750cc |41.92 lbs/​min |33.54 lbs/min |-10.6%| 
-|780cc |43.60 lbs/​min |34.88 lbs/min |-25.00+|780cc |43.60 lbs/​min |34.88 lbs/min |-10.4%| 
-|850cc |47.51 lbs/​min |38.01 lbs/min |-31.18+|850cc |47.51 lbs/​min |38.01 lbs/min |-21.1%| 
-|880cc |49.19 lbs/​min |39.35 lbs/min |-33.52+|880cc |49.19 lbs/​min |39.35 lbs/min |-20.2%| 
-|950cc |53.10 lbs/​min |42.48 lbs/min |-38.42+|950cc |53.10 lbs/​min |42.48 lbs/min |-29.4%| 
-|1000cc |55.89 lbs/​min |44.72 lbs/min |-41.50+|1000cc |55.89 lbs/​min |44.72 lbs/min |-33.0%| 
-|1150cc |64.28 lbs/​min |51.42 ​ lbs/min |-49.13+|1150cc |64.28 lbs/​min |51.42 ​ lbs/min |-41.7%| 
-|1200cc |67.07 lbs/​min |53.66 lbs/min |-51.25+|1200cc |67.07 lbs/​min |53.66 lbs/min |-44.1%| 
-|1600cc |89.43 lbs/​min |71.55 lbs/min |-63.44+|1600cc |89.43 lbs/​min |71.55 lbs/min |-58.1%| 
-|1850cc |103.41 lbs/​min |82.72 lbs/min |-68.38%+|1850cc |103.41 lbs/​min |82.72 lbs/min |-63.8%|
  
  
baseinjectordata.1234788997.txt.gz · Last modified: 2009/02/16 07:56 by twdorris