DragStuff

what is the best nitrous air fuel ratio on my wideband?

I have 13.5 to 13 is that ok for 100 shot?

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???

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!

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.

motor is 12.7-13.