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Please check my calculations for injector tuning

Old 09-05-2008, 05:32 AM
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Default Please check my calculations for injector tuning

Hey all,
I used Marcin's (RedHardSupra) spreadsheet for injector tuning since I will be installing my heads/cam setup and Racetronix 37# injectors. Let me know if the values look okay:

Injector Rated Fuel Pressure: 43.5
Your Fuel Rail Pressure: 58
Injector Rated Flow Rate 37

MAP (kPa) 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80

Injector Flow (g/sec) 5.38321391 5.416763732 5.450107032 5.483247576 5.516189021 5.54893491 5.581488687 5.613853694 5.646033176 5.678030288 5.709848096 5.741489581 5.772957642 5.804255099 5.835384699 5.866349113 5.897150943

Injector Flow (lb/hr) 42.72467337 42.9909465 43.25558053 43.51860536 43.78005001 44.0399426 44.29831047 44.55518013 44.81057735 45.06452716 45.3170539 45.56818122 45.81793214 46.06632905 46.31339372 46.55914737 46.80361065

Injector Flow (lb/min) 0.71207789 0.716515775 0.720926342 0.725310089 0.7296675 0.733999043 0.738305174 0.742586335 0.746842956 0.751075453 0.755284232 0.759469687 0.763632202 0.767772151 0.771889895 0.775985789 0.780060177


Here is a link to the spreadsheet for your use: Injector Spreadsheet

Thanks
Andy
Old 09-05-2008, 07:33 AM
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looks right to me, thats the same spreadsheet I use.
Old 09-05-2008, 09:39 AM
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Originally Posted by 69LT1Bird
looks right to me, thats the same spreadsheet I use.
So the initial factors are correct?

Injector Rated Fuel Pressure: 43.5
Your Fuel Rail Pressure: 58
Injector Rated Flow Rate 37
Old 09-05-2008, 10:15 AM
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According to Racetronix, those injectors are rated at 37 lbs at 3 bar which is the 43.5 PSI rating, with your 58 PSI (have you varified this) your tables look correct.


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