gen 3 5.3l cam idle and ve table tunning

[nanygoat]

hey guys i have a 2000 silverado 5.3l sloppy stage 2 cam, springs, long tube headers, truck intake and throttle body.
so i think im getting pretty close but thers alot to take in with all this and im loving learning it. hopefully ill have a turbo added soon with all the other goodies related to that but got to understand the easy part first ive been reading and watching videos im taking classes on hp academy. heres is my tune and a vlog or 2

tell me what im doing wrong and right thanks for the help

[bk2life]

do you have o2 sensors in there? i dont see them being logged
your commanded a/f seems off to what the w/b is reporting
its pulling alot of air at idle
is this a street car?

also im going to put this list here so you get an idea of what to tell us about not justss2 cam lt headers ect becuase there is lots of info you left out.
But good first post overall , welcome.

Vehicle make/model/year
Tune AND data log
Engine/size
Axle gear ratio / tire size
Computer and operating system used
Type of heads (317/243)
Transmission
Torque convertor stall
intake manifold
Intake tube / air filter
MAP part number
MAF part number
Injector part number
cam used (link to specs)
exhaust type (long tube headers, no cats, straight piped)
pictures of engine
pistons
compression
throttle body type, size and DBW/DBC
Fuel pressure at idle and while driving
fuel system type, FPR, pump size, returnless or no
ect ect

[nanygoat]

2000 silverado 5.3l
342 rear 20 inch wheels
P01 pcm, mvi3 pro
862 heads
4l60e/ stock tourq converter
Truck intake and truck throttle body
Factory 1 bar map sensor
Factory 24lb injectors

[nanygoat]

I'm in tuning in speed density. I'm commanding 14.12afr.
Long tube headers, no cats

[bk2life]

I'm in tuning in speed density.

why? just curious, there is no right or wrong answer, i was just curious
also when are you adding turbo?

[nanygoat]

isn't SD better to tune the fuel map? from what I've been learning SD is easiest way to start getting things dialed in along with timing idle air and the rest witch is why im here to learn the rest hopefully

[nanygoat]

so no one has any thoughts about the tune or data logs?

[twenglish1]

It needs tuned, your AFRs are all over the place. If its a street vehicle turn the fuel trims back on, this usually significantly helps part throttle drivability, this will also require getting both upstream O2s working, bank one sensor appears disconnected, i suspect this is where you installed the wideband? Leave the MAF failed, use the LTFT+STFT channel and plot them against the VE table in VCM scanner, then apply the corrections being made to the VE in the tune, smooth/interpolate as needed, and make sure you match the secondary VE to the primary on this OS. Fill out the main VE with the data and copy the rows/columns to the corresponding rows/columns of the secondary VE, with a failed MAF this OS defaults to the secondary table, you can also apply the SD enhanced OS that will correct this issue. Use the wideband for 4000+ RPM

[nanygoat]

Thanks that's the reply I was looking for. So the wide band isn't good enough for tuning down low only up top?
I did take out one of the o2 for the wideband. But why cant I juat use the wideband to do my tuning?

[horsepowerguru427]

Thanks that's the reply I was looking for. So the wide band isn't good enough for tuning down low only up top?
I did take out one of the o2 for the wideband. But why cant I juat use the wideband to do my tuning?

If youre going to use fuel trims to drive the vehicle around after its tuned, then use the fuel trims to correct fueling table(s) and MAF table. (as stated before, I also prefer LTFT+STFT) Use the wideband to tune anything in Power enrichment or WOT. Meaning, when you hit the pedal hard enough and your fuel status (in the scanner channels) changes from Ready/CL to Not Ready/OL then that is when you need the wideband. Dont try to pit them against each other at idle or mid throttle. Use trims until youre out of range and then blend that into a good log from the wideband that goes into areas your trims wont. Do the same for MAF.

Once you add turbos then use the wideband for 105kpa and up to get those areas within whatever range youre looking for.

You can just use the wideband for your tuning. If thats what youre wanting to do then just get rid of the trims and run the wideband for the whole map. I try not to do this, but on big cam and some forced induction stuff its better... You just usually get better driveability on the low end if you use the fuel trims. Although with the cam you have in a truck, you probly dont have any low end power lol

edit- I looked at your 2nd log and it looks like youre getting a good amount of knock retard. It seems like its burst knock but i didnt see that channel being logged. I zero'd burst knock tables in your tune. See if that fixes the knock retard issue.

Also, your VE needs some more work (according to the log) and then the idle needs attention. You can see in the screenshot that your STIT is pulling 63lb/hr.idle trims.jpg
Youll need to get the VE in better shape before you tackle idle trims though.

[nanygoat]

I was just planning on tuning with the wideband using the ve tables. Its geared way to high for sure thinking of putting a different gear maybe 411. Its a big truck and I want it to be faster than it is for sure getting ready to order the turbo like in the next week or so

[nanygoat]

So how's my timing look? I've went by the idle tune info I've gotten from here

[bk2life]

So how's my timing look

not a time to worry about timing, too many other issues you need to deal with 1st

I was just planning on tuning with wideband

why? What type of driving are you doing? Is this an offraod only rig?

. Its geared way to high

what does this mean? The 05 in the shop has 5.38 gearing

Its a big truck and I want it to be faster

what is a big truck? What size tires? What lift? What is faster mean?

getting ready to order the turbo

so all of your tuning will out the window and youll need to start over.

Without much any type of info from you it is hard to give any information to you in a way that will help. You haven’t told us anything other than a big truck with big gears and you want to go faster.
We need more info than that to make an ‘professional type’ of recommendation.