baseinjectordata
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baseinjectordata [2008/12/18 17:31] gamble |
baseinjectordata [2010/02/26 13:11] twdorris |
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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 43.5 for 2Gs). | + | All of these values assume stock base fuel pressure (37psi for 1Gs and 42.6 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]]. |
| - | **NOTE**: These values are for **GASOLINE ONLY** - they do NOT apply to cars running E85! | ||
| - | The formula to calculate the correct global setting for E85 is: | ||
| - | Stock Injector size/(New Injector size/((percentage of E85*0.33)+1))-1 | ||
| - | **NOTE**: The E85 correction above may work for some, but it does not work for me. E85 has a stoichiometric A/F of 9.765:1 while gasoline is 14.7:1. So E85 should require around 50% more fuel that gasoline. That would make the formula more like: | + | ^ Brand/Vendor ^ Size ^ Global ^ Deadtime ^Notes ^ |
| - | + | ^ ^ (cc) ^ (%) ^ (µsec) ^ ^ | |
| - | Stock Injector Size / (New Injector Size / ( ( percentage of E85 * 0.5 ) + 1 )) - 1 | + | |
| - | + | ||
| - | So for 850s (as in my car) with pure E85, I would run: | + | |
| - | + | ||
| - | 450 / ( 850 / ( ( 1.0 * 0.5) + 1 ) ) -1 = 450 / ( 850 / 1.5 ) - 1 = 450 / 567 - 1 = -0.206 or -20.6% | + | |
| - | + | ||
| - | Using that formula works perfectly on my car. | + | |
| - | + | ||
| - | ^ 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 29: | ||
| - | ----- | + | ===== E85 Note ===== |
| - | E85 Flow Chart. | + | |
| - | I'm posting this because I keep seeing so many questions about running E85. "Will _____ size injectors allow me to run ______ turbo on E85?" Here is a guide that will answer all of your questions. | + | |
| - | This guide takes the following into account. | + | 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% | ||
| - | 1. All injectors flow exactly what they say they will. IE: 720cc injectors flow exactly 720cc. | + | Using that formula works perfectly on my car. For even more E85 data, see the [[e85fuel|E85 notes]] page. |
| - | 2. All injectors flow exactly the same. IE: All injectors are perfectly matched (which is impossible in the real world) | + | |
| - | 3. Specific gravity of E85 is 0.79. | + | |
| - | 4. All calculations use a gasoline AFR of 12:1 - this equates to 8.05:1 in E85 #'s. Meaning - your wideband will read 12:1, but your actual AFR will be 8.05:1. Your wideband doesn't care what type of fuel you use, and will display numbers based on gasoline stohic (14.7:1). | + | |
| - | With that in mind, on to the numbers. | ||
| - | |||
| - | 390cc @ 100% IDC will support 21.80 lbs/min. Global Correction: +50.00% | ||
| - | |||
| - | 390cc @ 80% IDC will support 17.44 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 450cc @ 100% IDC will support 25.15 lbs/min. Global Correction: +30.00% | ||
| - | |||
| - | 450cc @ 80% IDC will support 20.12 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 550cc @ 100% IDC will support 30.74 lbs/min. Global Correction: +6.36% | ||
| - | |||
| - | 550cc @ 80% IDC will support 24.59 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 580cc @ 100% IDC will support 32.42 lbs/min. Global Correction: +0.86% | ||
| - | |||
| - | 580cc @ 80% IDC will support 25.94 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 650cc @ 100% IDC will support 36.33 lbs/min. Global Correction: -10.00% | ||
| - | |||
| - | 650cc @ 80% IDC will support 29.07 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 660cc @ 100% IDC will support 36.89 lbs/min. Global Correction: -11.36% | ||
| - | |||
| - | 660cc @ 80% IDC will support 29.51 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 680cc @ 100% IDC will support 38.01 lbs/min. Global Correction: -13.97% | ||
| - | |||
| - | 680cc @ 80% IDC will support 30.41 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 720cc @ 100% IDC will support 40.24 lbs/min. Global Correction: -18.75% | ||
| - | |||
| - | 720cc @ 80% IDC will support 32.20 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 750cc @ 100% IDC will support 41.92 lbs/min. Global Correction: -22.00% | ||
| - | |||
| - | 750cc @ 80% IDC will support 33.54 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 780cc @ 100% IDC will support 43.60 lbs/min. Global Correction: -25.00% | ||
| - | |||
| - | 780cc @ 80% IDC will support 34.88 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 850cc @ 100% IDC will support 47.51 lbs/min. Global Correction: -31.18% | ||
| - | |||
| - | 850cc @ 80% IDC will support 38.01 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 880cc @ 100% IDC will support 49.19 lbs/min. Global Correction: -33.52% | ||
| - | |||
| - | 880cc @ 80% IDC will support 39.35 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 950cc @ 100% IDC will support 53.10 lbs/min. Global Correction: -38..42% | ||
| - | |||
| - | 950cc @ 80% IDC will support 42.48 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 1000cc @ 100% IDC will support 55.89 lbs/min. Global Correction: -41.50% | ||
| - | |||
| - | 1000cc @ 80% IDC will support 44.72 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 1150cc @ 100% IDC will support 64.28 lbs/min. Global Correction: -49.13% | ||
| - | |||
| - | 1150cc @ 80% IDC will support 51.42 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 1200cc @ 100% IDC will support 67.07 lbs/min. Global Correction: -51.25% | ||
| - | |||
| - | 1200cc @ 80% IDC will support 53.66 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 1600cc @ 100% IDC will support 89.43 lbs/min. Global Correction: -63.44% | ||
| - | |||
| - | 1600cc @ 80% IDC will support 71.55 lbs/min | ||
| - | |||
| - | --- | ||
| - | |||
| - | 1850cc @ 100% IDC will support 103.41 lbs/min. Global Correction: -68.38% | ||
| - | |||
| - | 1850cc @ 80% IDC will support 82.72 lbs/min | ||
| + | ----- | ||
| + | E85 Air Flow Support Chart: | ||
| + | This chart outlines the approximate max airflow which can be supported for a given duty cycle and injector flow rate on E85. 43.5psi base fuel pressure is assumed. | ||
| - | ^ E85 Flow Rates | + | ^ Injector Size ^ 100% IDC(lbs/min) ^80% IDC (lbs/min) ^ Global (E85)| |
| - | ^ Injector Size ^ 100% IDC ^ 80% IDC 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 |-18.75%| |
| - | |750cc |41.92 lbs/min |33.54 lbs/min |-22.00% | + | |750cc |41.92 lbs/min |33.54 lbs/min |-22.00%| |
| - | |780cc |43.60 lbs/min |34.88 lbs/min |-25.00% | + | |780cc |43.60 lbs/min |34.88 lbs/min |-25.00%| |
| - | |850cc |47.51 lbs/min |38.01 lbs/min |-31.18% | + | |850cc |47.51 lbs/min |38.01 lbs/min |-31.18%| |
| - | |880cc |49.19 lbs/min |39.35 lbs/min |-33.52% | + | |880cc |49.19 lbs/min |39.35 lbs/min |-33.52%| |
| - | |950cc |53.10 lbs/min |42.48 lbs/min |-38.42% | + | |950cc |53.10 lbs/min |42.48 lbs/min |-38.42%| |
| - | |1000cc |55.89 lbs/min |44.72 lbs/min |-41.50% | + | |1000cc |55.89 lbs/min |44.72 lbs/min |-41.50%| |
| - | |1150cc |64.28 lbs/min |51.42 lbs/min |-49.13% | + | |1150cc |64.28 lbs/min |51.42 lbs/min |-49.13%| |
| - | |1200cc |67.07 lbs/min |53.66 lbs/min |-51.25% | + | |1200cc |67.07 lbs/min |53.66 lbs/min |-51.25%| |
| - | |1600cc |89.43 lbs/min |71.55 lbs/min |-63.44% | + | |1600cc |89.43 lbs/min |71.55 lbs/min |-63.44%| |
| - | |1850cc |103.41 lbs/min |82.72 lbs/min |-68.38% | + | |1850cc |103.41 lbs/min |82.72 lbs/min |-68.38%| |
baseinjectordata.txt · Last modified: 2024/03/15 11:16 (external edit)
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