Tonyrodz's Tahoe Build Thread

[Tonyrodz]

I plugged in my scanner while idling. I don't really know what I'm looking at.
Anyone know if it's good or bad?

 

[Tonyrodz]

 

[Sam Harris]

I don’t know shit about tuning, but I think your short - and long term fuel trims look like off. They should be pretty close to 0, or very low numbers AFAIK.

It does look like it’s not pulling timing, but I’m assuming you grabbed that while sitting there idling..?

 

[randeez]

Its pulling fuel on the ltft from where the tune is telling it to run.

The stft will usually bounce around 0

 

[03catburban]

-12 and -8 is quite a bit of fuel being pulled your tune is still a little rich on the bottom end I bet it smells rich idling

 

[kbuskill]

How many miles have you driven it, not towed it, since you got it back?

The reason I ask is because if the ECM was reset, it takes about 100-150 miles of driving for your fuel trims to settle in.

 

[Tonyrodz]

I don’t know shit about tuning, but I think your short - and long term fuel trims look like off. They should be pretty close to 0, or very low numbers AFAIK.

It does look like it’s not pulling timing, but I’m assuming you grabbed that while sitting there idling..?

Yeah, I was sitting idling.

Its pulling fuel on the ltft from where the tune is telling it to run.

The stft will usually bounce around 0

Is that good or bad? I can hear some strange low erratic popping kind of noise. It's hard to describe. I hear it a little better when I put down the passenger rear window. I tried to record it but you can't hear it on video. It gets up and goes when I romp it tho. I THINK i've heard sporadic pops from the exhaust. Almost like a low backfire noise, but not as loud as a backfire would be. I just hope there's not a problem with this motor.

 

[Tonyrodz]

-12 and -8 is quite a bit of fuel being pulled your tune is still a little rich on the bottom end I bet it smells rich idling

Even with the old motor, its always smelled rich. Somewhat normal with it. Also it has no cats, which doesn't help.

How many miles have you driven it, not towed it, since you got it back?

The reason I ask is because if the ECM was reset, it takes about 100-150 miles of driving for your fuel trims to settle in.

Def less then 100 miles since I've gotten it back.

 

[Sam Harris]

Even with the old motor, its always smelled rich. Somewhat normal with it. Also it has no cats, which doesn't help.

Def less then 100 miles since I've gotten it back.

Man, you need a tuner to look at this. I forgot, which do you have? find your AutoCal yet Tony....?

 

[Scottydoggs]

at idle a cam will run rich, drive around and see where the ltft go at cruise speed.