New .xls file for Injector scaling plus misc formulas
07-30-2003, 12:31 PM
#1
TECH Regular
Thread Starter
iTrader: (1)
Join Date: Jun 2002
Location: Pottstown, PA
Posts: 464
Likes: 0
Received 0 Likes
on
0 Posts
New .xls file for Injector scaling plus misc formulas I just made this up. Please take a look at it and let me know if anything needs to be changed or if you think I should add anything to it. If you want something added, post the formula. I did borrow the color/look of whoever wrote the injectorscale.xls file.
Excel Formulas
It solves for the following fields:
Stock Injector Flow Rate
New Injector Flow Rate
Injector Duty Cycle
Convert g/sec to g/cyl
Convert Injector Flow
Injector Correction Factor
Convert Injector Flow to g/sec
Convert Horsepower to Torque
Convert Torque to Horsepower
Convert BAR to PSI
Convert PSI to kPa
Also disregard the second sheet, I'm just collecting IFR values from different tunes on the Bosch 42# injectors.
Excel Formulas
It solves for the following fields:
Stock Injector Flow Rate
New Injector Flow Rate
Injector Duty Cycle
Convert g/sec to g/cyl
Convert Injector Flow
Injector Correction Factor
Convert Injector Flow to g/sec
Convert Horsepower to Torque
Convert Torque to Horsepower
Convert BAR to PSI
Convert PSI to kPa
Also disregard the second sheet, I'm just collecting IFR values from different tunes on the Bosch 42# injectors.
07-30-2003, 10:00 PM
#6
TECH Apprentice
Join Date: Apr 2002
Location: Sheboygan, WI
Posts: 302
Likes: 0
Received 0 Likes
on
0 Posts
Re: New .xls file for Injector scaling plus misc formulas Cool, Thanks! 
I've got an LT1 smart friend who's never seen the gms/cyl stuff and was asking me about it so when I sent my Edit cable in for repair I asked about it and Ken Kelley sent this to me. If it's of any help might you add it to the "tables"? Although it seems that you already have this taken care of... right?
I love when someone in the know actually shares the info with those of us who are still learning, thanks for your work and efforts, this will probably prove to be a helpful tool 
Troy
I've got an LT1 smart friend who's never seen the gms/cyl stuff and was asking me about it so when I sent my Edit cable in for repair I asked about it and Ken Kelley sent this to me. If it's of any help might you add it to the "tables"? Although it seems that you already have this taken care of... right?
From Ken Kelley @ Carputing
With the LS1, GM is using Airflow as a measure of load, instead of
Intake manifold vacuum.
YOu can calculate the number from MAF and RPM.
THe load axis is Grams/ Cylinder. This is the amount of air in each
cylinder fill.
THe MAF is in Grams Per second
So take MAF * 60 to get Grams Per Minute
Divide it by RPM, and you get GRams per revolution, since you get 4
cylinder fills per revolution, THat means:
Grams/Cyl = (MAF*60)/(RPM*4) = (MAF * 15)/RPM
With the LS1, GM is using Airflow as a measure of load, instead of
Intake manifold vacuum.
YOu can calculate the number from MAF and RPM.
THe load axis is Grams/ Cylinder. This is the amount of air in each
cylinder fill.
THe MAF is in Grams Per second
So take MAF * 60 to get Grams Per Minute
Divide it by RPM, and you get GRams per revolution, since you get 4
cylinder fills per revolution, THat means:
Grams/Cyl = (MAF*60)/(RPM*4) = (MAF * 15)/RPM
Troy
07-30-2003, 11:19 PM
#7
TECH Regular
Thread Starter
iTrader: (1)
Join Date: Jun 2002
Location: Pottstown, PA
Posts: 464
Likes: 0
Received 0 Likes
on
0 Posts
Re: New .xls file for Injector scaling plus misc formulas Thanks,
But I'm very far from being in the know. I was just doing a lot of research in preparation for the ATI install and decided to throw all the different formulas I came across on to one .xls file.
Regarding the e-mail from Ken Kelly, that formula (MAF * 15)/RPM is in the form. See block E34. I probably should have labeled Block C34 differently to read "MAF Flow(g/s)"
But I'm very far from being in the know. I was just doing a lot of research in preparation for the ATI install and decided to throw all the different formulas I came across on to one .xls file.
Regarding the e-mail from Ken Kelly, that formula (MAF * 15)/RPM is in the form. See block E34. I probably should have labeled Block C34 differently to read "MAF Flow(g/s)"
