air fuel ratio on wideband

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jaspermaggie
Posts: 212
Joined: Fri Mar 14, 2008 2:52 pm
Location: Plano Texas

air fuel ratio on wideband

#1 Post by jaspermaggie » Fri May 02, 2008 3:01 pm

what is the best nitrous air fuel ratio on my wideband?
My car is not as fast as I think it is.

jaspermaggie
Posts: 212
Joined: Fri Mar 14, 2008 2:52 pm
Location: Plano Texas

Re: air fuel ratio on wideband

#2 Post by jaspermaggie » Sun Sep 21, 2008 10:14 am

I have 13.5 to 13 is that ok for 100 shot?
My car is not as fast as I think it is.

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1320quick
Posts: 147
Joined: Wed Apr 26, 2006 1:51 pm
Location: Denver Co

Re: air fuel ratio on wideband

#3 Post by 1320quick » Mon Sep 22, 2008 1:03 pm

We typically have a reading of 10.5 to 10.8 on our Prologger wideband. We don't tune with our wideband. We only read the plugs and once the tune is right on the plugs, we note what the wideband reports and just use it as a reference. 13 to 13.5 seems pretty lean to me. What do your plugs say???
Ron
71 Nova - 3300lbs, stock suspended on a 275
5.35 132MPH in the thin Colorado air

jaspermaggie
Posts: 212
Joined: Fri Mar 14, 2008 2:52 pm
Location: Plano Texas

Re: air fuel ratio on wideband

#4 Post by jaspermaggie » Mon Sep 22, 2008 8:14 pm

plugs look new. I miss put my a/f it is 12.5 to 13. I found some formula and you are dead on it came up with 11.8. I was running 5.75 psi I upped it to 6.5. Do you think that will make much difference or should I go up one jet? I think my bottle was only 900 I usually have it at 950. Thanks for your help. Nice car!
My car is not as fast as I think it is.

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1320quick
Posts: 147
Joined: Wed Apr 26, 2006 1:51 pm
Location: Denver Co

Re: air fuel ratio on wideband

#5 Post by 1320quick » Mon Sep 22, 2008 10:19 pm

jaspermaggie wrote:plugs look new. I miss put my a/f it is 12.5 to 13. I found some formula and you are dead on it came up with 11.8. I was running 5.75 psi I upped it to 6.5. Do you think that will make much difference or should I go up one jet? I think my bottle was only 900 I usually have it at 950. Thanks for your help. Nice car!
How is the a/f ratio if you run it on the motor??? I had a problem once where the motor tune was way off and that caused the nitrous tune to be way out of whack as well. After we got the motor tune right, the nitrous tune fell in line. We have run a a/f ratio of around 12.6 on the motor and we are like 10.6 to 10.8 on the bottle. If your motor tune a/f ratio is right, upping the fuel pressure to 6.5 will certainly improve things. I would recommend to do some research on reading nitrous plugs if your not well versed in reading them.
Ron
71 Nova - 3300lbs, stock suspended on a 275
5.35 132MPH in the thin Colorado air

jaspermaggie
Posts: 212
Joined: Fri Mar 14, 2008 2:52 pm
Location: Plano Texas

Re: air fuel ratio on wideband

#6 Post by jaspermaggie » Tue Sep 23, 2008 6:36 am

motor is 12.7-13.
My car is not as fast as I think it is.

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