Welcome to the Michigan FBody Association website.
The Michigan FBody Association is a centralized website for FBody enthusiasts to discuss what's going on in the Michigan area. MiFbody.com was created to allow for an easy one-stop place to find out what's going on in Michigan as far as FBody events, to find out what clubs are available in your immediate area, and for an easy place to post classifieds for items you want to sell! Our goal was to create a more close-knit community of FBody enthusiasts in the state of Michigan, and to bring Camaro and Firebird enthusiasts alike together for some amazing FBody events!
The most important thing to know about the Michigan FBody Association is that we are NOT a club! The Michigan FBody Association is open to everyone, and is a community. Thus, we will have get togethers, casual cruises, events, and such like that, but this is not an exclusive club and it's 100% free to join this site! So what are you waiting for? Register now!
If you have any problems with the registration process or your account login, please contact us!
lol now I just gotta figure out how to use it. never tuned with a computer before. so this is all new to me. still trying to figure out where to adjust what. but yes this will be a big help
here the the pulse width data and other info I was sent.
CC/min LB/Hr Ohm 10v 11v 12v 13v 14v 15v 43.5 PSI 440 42 13 1.27 1.08 0.91 0.74 0.63 0.53 43.5 PSI 550 52 13 1.07 0.88 0.78 0.67 0.55 0.46 43.5 PSI 650 62 12 1.08 0.86 0.69 0.54 0.41 0.31 43.5 PSI 850 80 12 1.36 1.12 0.92 0.76 0.63 0.50 43.5 PSI 1000 96 3 1.17 0.95 0.80 0.67 0.56 0.46 43.5 PSI 1200 114 3 2.55 2.28 2.00 1.79 1.62 1.46 43.5 PSI 1600 152 3 1.80 1.46 1.23 1.05 0.92 0.81 Here is a website that also might help you. http://www.rbracing-rsr.com/calcinjpulse.html Getting the injector dead time correct is important for getting a stable, accurate idle, and accurate AFR's while engine braking. Injector dead time will differ from the manufacturer spec if the "fly back" voltage your ECU applies to the injectors is different than that during the manufacturer's tests. Here is a method for measuring dead-time in-car.
Procedure: Idle car while data logging, and have a means of changing injector electrical pulse width slowly up and down while logging. Car must have a reasonably stable idle at a fairly fixed RPM, and battery voltage must be constant throughout. Log MAP, AFR, Battery volts, and Injector electrical pulse width, while idling. Slowly raise and lower injector on time ( Do it by changing the AEM's injector dead time vs. battery voltage, across 3 cells, straddling the battery voltage that you are seeing). Slowly raise and lower it until the RPM starts to drop significantly or the car starts to misfire. You could go from 11:1 to 16.3:1 or so and back. Do this several times, it may take you a few minutes. Then examine the data logs. Do an XY plot. Plot MAP divider AFR on the X-axis, then injector on-time on the Y-axis. You can use AEM Log for this, or MS Excel. Excel has the advantage of having a linear curve fit ("trendline, linear"). The datapoints should form a line. If you project this line to the Y-axis, the intercept is the dead time. In Excel, do a scatter plot, then add a trendline. Select "linear", and in the options, select "show equation". If your data is clean and has little noise, the Y-intercept will show in the equation. If not, select "Set Intercept", and try different values until the trendline appears to describe the quiet part of the data.
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. never tuned with a computer before. so this is all new to me. still trying to figure out where to adjust what. but yes this will be a big help
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