Fuel injection? Open or Closed loop? - Page 2

Tim Lisson · 05-10-2012, 09:56 AM

I'm with Ed! I don't like my dial-in changing as I'm heading down the track. It would follow the air 2 runs then, change 3 a different direction.

I clamped the correction amount, and realized, what are you really correcting? Open loop it follows the air like a carb car and I understand that.

Tim

KRatcliff · 05-10-2012, 09:58 AM

This is your car on closed loop.

Rich Biebel · 05-10-2012, 12:58 PM

"Hal, what should I dial?"

" Wait while I check the weather... Dave"

KRatcliff · 05-10-2012, 01:09 PM

Quote:

Originally Posted by Rich Biebel

"Hal, what should I dial?"

" Wait while I check the weather... Dave"

I am afraid it is going to say "Kyle, we are not going to run fast this weekend."

TOSTO RACING · 05-10-2012, 01:11 PM

Open here.

art leong · 05-10-2012, 01:19 PM

I started this post 4 years ago.
I run in open loop seems to work fine.
I have a quick tune feature that I can type the AFR ratio I want and it does the math to adjust. But after the run not while going up the track.

RacingRicki · 05-10-2012, 07:58 PM

Always open loop unless I am trying to see how much the O2 sensor is correcting. Then I will make a throw away run in closed loop, make an adjustment and stick with open loop.

Chad Rhodes · 05-10-2012, 08:04 PM

Quote:

Originally Posted by KRatcliff

This is your car on closed loop.

that's funny. I've run the car in closed loop testing, with it data logging. Normally to target it to a specific AFR. But I'd never do that in eliminations

Ed Wright · 05-10-2012, 09:22 PM

Man, I'm dumb. I don't get it. Who is Dave, and is that Ted thing a button, or light, or???
Forgive me. I'm old. Probably some young thing I don't know about. :-(

D.Johns · 05-10-2012, 09:57 PM

^^^
2001 A space odyssey.

Was a movie from 1968.

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

05-10-2012, 09:56 AM	#11
Tim Lisson Member Join Date: Aug 2003 Location: Solon Springs, WI Posts: 166 Likes: 0 Liked 0 Times in 0 Posts	Re: Fuel injection? Open or Closed loop? I'm with Ed! I don't like my dial-in changing as I'm heading down the track. It would follow the air 2 runs then, change 3 a different direction. I clamped the correction amount, and realized, what are you really correcting? Open loop it follows the air like a carb car and I understand that. Tim

05-10-2012, 09:58 AM	#12
KRatcliff Senior Member Join Date: Sep 2011 Posts: 760 Likes: 75 Liked 511 Times in 138 Posts	Re: Fuel injection? Open or Closed loop? This is your car on closed loop.

05-10-2012, 12:58 PM	#13
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,306 Likes: 25 Liked 537 Times in 211 Posts	Re: Fuel injection? Open or Closed loop? "Hal, what should I dial?" " Wait while I check the weather... Dave" __________________ Rich Biebel S/C 1479 Stock 147R

05-10-2012, 01:11 PM	#15
TOSTO RACING Senior Member Join Date: May 2007 Location: DRAGSTRIP Posts: 844 Likes: 782 Liked 526 Times in 158 Posts	Re: Fuel injection? Open or Closed loop? Open here. __________________ 5664 AA/SA 1970 NOVA

05-10-2012, 01:19 PM	#16
art leong VIP Member Join Date: Dec 2001 Location: Richmond Hill, Georgia Posts: 2,003 Likes: 0 Liked 1 Time in 1 Post	Re: Fuel injection? Open or Closed loop? I started this post 4 years ago. I run in open loop seems to work fine. I have a quick tune feature that I can type the AFR ratio I want and it does the math to adjust. But after the run not while going up the track. __________________ Art Leong 2095 SS

05-10-2012, 07:58 PM	#17
RacingRicki Sponsor Join Date: Sep 2005 Location: Colorado Posts: 106 Likes: 0 Liked 0 Times in 0 Posts	Re: Fuel injection? Open or Closed loop? Always open loop unless I am trying to see how much the O2 sensor is correcting. Then I will make a throw away run in closed loop, make an adjustment and stick with open loop. __________________ RacingRicki

05-10-2012, 09:22 PM	#19
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 389 Times in 168 Posts	Re: Fuel injection? Open or Closed loop? Man, I'm dumb. I don't get it. Who is Dave, and is that Ted thing a button, or light, or??? Forgive me. I'm old. Probably some young thing I don't know about. :-( __________________ Ed Wright 4156 SS/JA

05-10-2012, 09:57 PM	#20
D.Johns Member Join Date: Dec 2011 Location: Indiana Posts: 437 Likes: 15 Liked 18 Times in 6 Posts	Re: Fuel injection? Open or Closed loop? ^^^ 2001 A space odyssey. Was a movie from 1968.