jkru617

iTrader: (1)

Maybe I am reading this Dyno Graph wrong but it looks to me like it starts running rich at 4.75 rpm. Anyways tuner says its lean and I need a new fuel pump (which I probably do anyway) and he would be able to keep the air fuel around 13 or lower. I thought the higher the number the more fuel. Am I wrong?

Vortech V2
42# Injectors
LT

nighthawk08

you are wrong...that is SUPER lean....

BlackGMC

iTrader: (31)

I would have not even gone that high on the pull, IMO it is a miracle you did not pop the motor... 16.5 AFR at ~5400 is dangerous on a NA motor, it is 10X worse on a FI motor...

nighthawk08

thats what I was gonna say but had to step away from my computer. I don't know how that motor survived that pull. I would not go WOT in your truck until you get this fixed.

dlt76028

iTrader: (13)

was it a clamp on wideband? thats kinda what my old graph looked like cuz it kept popping of my exhaust.

schino

iTrader: (14)

im really surprised it made that much power under those conditions. way way way to lean. all across the board

jkru617

iTrader: (1)

Its a wideband. We actually ran it three times on there. I guess i got lucky. Hopefully Ill make a lot more to the wheels with a pump

A Low Dime

iTrader: (13)

WOW, even at the richest part of the run, its still way too lean.

jkru617

iTrader: (1)

Think a walbro 255 will fix it?

Flaco

iTrader: (4)

dammmmmm, that is lean as ****...AFR should be in at 11.5 area...

who tuned it? since i see ARD on the top of your dynosheet on the previos one u showed.. tell them to step away from the computer