If you were hooking on both runs it sounds to me like your fueling is off 20 degrees isnt gonna make 4/10's of a difference thats alot.
Do you have a wideband? Who is tuning?

 

fuel is off?? fuel trims at 0.00 long and short, timing 33*,02's 900, afr 12.8, throttle blade 100%, what else do you think it could be?

nelson performance tuning. The tuning didn't change at all with the truck intake to the weiand intake.

 

you should put a wideband on it before and after, i'd bet your runing a little lean with the weiand

 

well if it was running leaner it would of ran better????

 

we will def. no after friday night when I run the truck again with stock intake.

I'm not doughting the intake is capable of putting out good numbers it just didn't work with my setup.

If anyone else want the intake PM me.

 

not really,
on my wideband going from 14.0 to 13.0 really felt a sotp difference, not to mention a few street racing tests proved better at 13.0..

 

well all I can go off of is my auto tap program and the reading both intakes do and read, if the readings are the same then it should be the same in my book.

the 02's tell alot if the truck is running lean or rich, with both going to 900 at wot then that tells me it is a good fuel mixture.

 

well lets see how it goes with the truck intake, i am still interested in this setup, probably gonna do it soon too. g/l

 

well I will let the intake go cheap, if your interested.

 

Im asuming that you dont have an on board wideband. Honestly I think 33degrees is excessive and since everyone runs leaner on the street vs a dyno and then you swapped the intake. You have alot of timing more air and it probably is leaner like rvg is saying
KR could account for the big variations in your runs also mph is a big indication and 101 with a low 13 sec pass seems off.

are you scanning them?