Got my truck dyno'd and have questions

[Cammin4V]

I got my truck dyno'd yesterday at USA motorsports for the dyno day. 3 back to back pulls.

1st pull: 336/410
2nd pull: 346/412
3rd pull: 355/408

The numbers are kind of what i expected, although thats a big jump in power between the 3. The a/f would start out at about 14to1 then drop down to 10to1 or lower by 4700rpm's or so. Is this alright? Just a safety thing on the Ford stock tune? The only thing the truck has is an open filter and bassani catback. It is a 2000 as well.

Just want to make sure nothing is too crazy, but 10to1 just doesnt sound too hot.

[L8 APEX]

looks pretty stock, the 99-00 were 10:0 stock, 01-04 were leaned up to 12's+

[bluesvt]

I have an 03 and my a/f is high 10's to low 11's at W.O.T. According to my AEM wideband. :tu:

[Tex Arcana]

Is your truck stock? Terry's right, those look like stock numbers. And it's way surprising they went up thru the runs.

Mine a/f'd at 12:1 on my first pulls; 13:1 since then.

[Sixpipes]

Stock 99/00 trucks were what we call pig-rich. Your results are very similar to what I got with mine right from the dealer. I don't understand the difference in the numbers from all three pulls. 355 rwhp seems too high for stock especially on a third pull. :cool:

[Tex Arcana]

Stock 99/00 trucks were what we call pig-rich. Your results are very similar to what I got with mine right from the dealer. I don't understand the difference in the numbers from all three pulls. 355 rwhp seems too high for stock especially on a third pull. :cool:

Just the numbers themselves seem wrong, they shouldn't go up with each pull.