Question for those who have a Air- Fuel-Ratio gauge on your ski ?

[gmoeller]

Here's the link to the installation instructions from Dynotune and they state the calibration procedures:

http://www.dynotunenitrous.com/store...20WIDEBAND.pdf

Thanks Craig.

[Jack B]

Your engine might run very hot
or injector failier,
also with Powershot you unable to lean lower than stock setting.

Running at 10.2 will do the following:

1. The excess fuel actually tends to delay combustion, in effect it as though you are retarding the timing. This should promote a cooler running engine.

2. Since it retards the ideal combustion point you are also losing hp. You will see peak hp at approximately 12.5, however, that is running without a margin for error. An NA engine can safely run as lean as 12.8 at wot, however, a SC or nitrous engine has a a smaller margin for error and it is not typically best to run higher than 12.0, mid 11's is far safer. Remember your a/f ratio is the average of all the cylinders. There can always be one cylinder that is running leaner than the average. The amount of hp you will loose at 11.5 (versus 12.5) is not significant, plus you are far safer with less chance of detonation.

3. The other negative is that an engine running excessively rich can wash the oil from the cylinder walls and increase engine wear.

[kristian4802]

How fast your going in your fzr?

[2fast4u]

Thanks to everyone who posted there A/F numbers up. I hope that now everyone is getting a better understanding of them. If anyone else wants to post there A/F numbers I will appreciate it a lot, Thanks, Tommy Jordan

[Eds_FZR]

Hi Tommy,
Results from file I pulled this week

1400rpm = A/F 13.97 ~ Lambda .95
3940rpm = A/F 13.8 ~ Lambda .94
4500rpm = A/F 13.78 ~ Lambda .94
5100rpm = A/F 13.4 ~ Lambda .91
6000rpm = A/F 13.24 ~ Lambda .90
6500rpm = A/F 12.79 ~ Lambda .87
7000rpm = A/F 12.53 ~ Lambda .85
7600rpm = A/F 12.16 ~ Lambda .83
8300rpm = A/F 11.9 ~ Lambda .82

[2fast4u]

Anyone else want to post there A/F Numbers along with what mods you have?

[hitman]

Anyone else want to post there A/F Numbers along with what mods you have?

When my AEM unit comes back to me I will post a log file.

[2fast4u]

I brought this back up for the new guys to read!

[SHOdude]

I brought this back up for the new guys to read!

Once I get a new sensor and mine up and running again, I will post my numbers using the C3 wheel and R3 reflash.

[Shark]

I thought running in the Mid 13's to low 14's on Idle was ideal?