Fuel injection? Open or Closed loop?

Darrel Goheen · 10-17-2019, 12:42 AM

Quote:

Originally Posted by Ed Wright

If you do it in Speed Density mode, and only alter the V.E. Table cells the logger shows it to be using, next time you go to Denver you should not have to touch it. It will use a different part of the V.E. table at Denver than "down here".

I rarely mess with it now. I have my correction limits set at 3%. Very seldom does the data log show 3%. 1 or 2% most of the time. I normally only look at the data log at the end of a race but I don't always do that. It just works. Thanks for all your help.

Ed Wright · 10-19-2019, 08:40 AM

Your Stocker must wind up slow enough the corrections hit the right cells. Mine winds up too fast for that, other than high gear. Lean at 7000? Added fuel shows up at 7500, which likely did not need it. Have to keep mine in Open Loop. A faster ECM might help there.
Now that I have worked with it, at all the tracks, and weather, it’s always good when I log it. I use the IAT sensor as well. Mounted IN the intake manifold plenum.

Bobby Fazio · 10-17-2022, 07:18 AM

Want to learn more? We are going to the source on Tuesday NOON EST. Watch here or on Facebook Live and have your questions ready!

View Poll Results: Fuel injection? Do you run in open loop or closed loop
Open Loop	80	65.04%
Closed Loop	43	34.96%
Voters: 123. You may not vote on this poll

10-19-2019, 08:40 AM	#2
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Fuel injection? Open or Closed loop? Your Stocker must wind up slow enough the corrections hit the right cells. Mine winds up too fast for that, other than high gear. Lean at 7000? Added fuel shows up at 7500, which likely did not need it. Have to keep mine in Open Loop. A faster ECM might help there. Now that I have worked with it, at all the tracks, and weather, it’s always good when I log it. I use the IAT sensor as well. Mounted IN the intake manifold plenum. __________________ Ed Wright 4156 SS/JA

10-17-2022, 07:18 AM	#3
Bobby Fazio VIP Member Join Date: Nov 2009 Location: Egg Harbor Township, NJ Posts: 1,474 Likes: 1,469 Liked 4,390 Times in 506 Posts	Re: Fuel injection? Open or Closed loop? Want to learn more? We are going to the source on Tuesday NOON EST. Watch here or on Facebook Live and have your questions ready! __________________ '65 Mustang SS/L & L/SA DriverInterviews.com \| App.DragInsights.com Last edited by Bobby Fazio; 10-17-2022 at 07:21 AM.