Guys, Went to the dyno today. I will not post any a/f numbers....but I will say that the 3 trucks that showed up had pretty much the same a/f numbers. Even the stock truck......So I would like to get some info on the a/f readings from any L from stock to modded.

Thanks to all that post a reply

 

I was showing 10.1-10.6 all the way across stock. Im 12.0 with my current tune on the Black Delta Tails still show black after polishing them every other day.

 

lander i was showing about a 16 AF ratio which has to be off, i would be pinging so bad it wouldnt even be funny, i was told all of you guys ran really lean, and my exhaust is a little longer so i can see it reading even leaner. email me your info or your af graph if you can/want to so we can compare data.

 

Had mine dynoed Today.

Bone Stock.

3000 rpm A/F 15.7 that number decreased evenly until 4300 rpm where it stayed at 12.6 for the reaminder of the run. I had an average of 13.6 for the entire run.

My Trucks power is way down compared to other stock trucks. I dont have a clue why this is.

 

damn, that is lean. i dont know if its different for a stock truck but on a modded lightning i would not want to go above 12.5 at all. How was the A/F ratio measured?

 

Do you know why your tailpipes are black and sooted up??

I'll give you a hint......... Its not because you are running pig rich.

DEDICATION

 

i guess i dont understand that

 

My AFs were 11.5-11.7 @ 5500 rpms. Remember to account for the dyno showing .4-.9 off (leaner) because of a tailpipe sniffer...

So basically my AFs may have been in the 10s. And my timing is 15 degrees so I think I still have a little left in my tune...

 

Why not get a decent air/fuel gauge, modified for our trucks.
We did a dyno day and the guys with the MR.GADGET modifed gauges were dead on.
Some guys in my club are doing a two gauge air/fuel for both sides.
That way you now where you are all the time.

 

Anyone other than FJO do a digital readout wideband? I like Easter's setup a lot...

 

You know JJ, for someone who claims to be such a tuner and tunes his own truck, explain why you have blown up more Lightnings then the top 3 vendors combined?

Go take your Plasma Booster miracle power maker and stick it in your ***.

 

I've been to the dyno on numerous occasions to check a/f ratio, as well as my progress. Mine have ranged from dropping off the chart richness at about 4200 rpms, on one tune, to a 12.7 on an old tune with a new mod added to the mix. Most of my runs have fallen into the 11.5 to 12.0 area. Measured at the sidepipe.

 

Well there goes my thread

 

Tell us what you really think ****. Quit holding back.