Mild 6.0L Build Suggestions?

[Dantheman1540]

The ECU could be commanding 12afr because it's going into power enrichment. Although it would be weird for it to happen at idle or low throttle if someone tuned it previously they may have messed with the PE activation and have it come on at a minimal throttle position

Not sure what Wideband you are using but there are very specific algorithms needed to get each model to read correctly in HPT. I have a few of them saved but not on my work computer.

 

[Matthew Jeschke]

The ECU could be commanding 12afr because it's going into power enrichment. Although it would be weird for it to happen at idle or low throttle if someone tuned it previously they may have messed with the PE activation and have it come on at a minimal throttle position

Not sure what Wideband you are using but there are very specific algorithms needed to get each model to read correctly in HPT. I have a few of them saved but not on my work computer.

I believe my widebad is the AEM 30-4110. I think the sensor went out. Is a bosch 4.9. They are helping me with an RMA. Sigh delays [emoji25]

I got all hooked up with HP tuners and was reading close to commanded AFR. That was before it stopped working. Assuming that was my error to calibrate out per goat rope garage tutorials... I kind of wonder if my anti seize on the threads got into the sensor. I put VERY little on as was concerned with that.

I will look at power enrichment settings thanks!

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[Dantheman1540]

I gobbed the anti seize on and haven't had an issue. I have heard of people having bad sensors out of the box tho.

 

[Matthew Jeschke]

yeah i recon is my problem. I found a new sensor for 32$ says is bosch 4.9, specific for my gauge. not sure if a lie haha seems cheap.

Will fiddle with it for a bit though before I do anything. Just suprised me. It worked for a while.

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[fasteddy]

yeah i recon is my problem. I found a new sensor for 32$ says is bosch 4.9, specific for my gauge. not sure if a lie haha seems cheap.

Will fiddle with it for a bit though before I do anything. Just suprised me. It worked for a while.

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Is your wideband O2 sensor in front of or behind your OEM O2?
If its behind you switch them.....maybe you're encountering turbulence.

 

[Matthew Jeschke]

I put the wideband closer to the exhaust manifold than the factory bung.

It seems to peg the meter even when I have just the ignition on and engine not running.

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[Matthew Jeschke]

I pulled the wideband out. This is weird. I find multiple datasheets on it and pinouts. One of the data sheets says the Nernst Cell (sensor) should have 300 ohms across it. I get nothing. There is a trimming resistor pin. I'm not exactly sure how to measure the resistance across the sensor or perhaps it's because it is truly dead?

Anybody checked out one of these sensors before? I should see resistance somewhere, not just open circuits? Right?

 

[Matthew Jeschke]

Back on track, kind of *ahem*. I got a new wideband sensor in from eBay was only $35 for bosch 4.9. Works great. I got my VCM scanner setup with HP tuners and a MAF only bin loaded to the computer. I let truck idle for a few minutes closely watching HP tuners VCM scanner for abnormalities (overly rich, knock, etc). No problems, AFR was nearly spot on. However, I decided to richen it by 5% so multiplied the MAF calibration table by 1.05, just to be doubly sure I'm not going lean while cruising around collecting data.

However, during all this I noticed a little / slight smoke coming from under the engine bay. I thought maybe the paint I put on exhaust but that wasn't even flinching at the heat. I looked really close at all the wiring nothing touching, double checked fuel lines were good, etc. etc. etc.

Then realized, d$m& it haha... That stupid Wideband O2 bung. I looked and it was leaking, NO WAY DOES THE EXHAUST JB WELD WORK. It was all pealing off and blowing exhaust out the hole

I need to drop the exhaust and take that in to have it professionally welded before I go any further.

 

[fasteddy]

That sucks....
2 steps forward
1 step back

But still progress.

 

[Matthew Jeschke]

Noticed I have a bad heatet core hose at same time. The one with the Y in it haha... Working out all the bugs

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[Matthew Jeschke]

*sigh* another setback haha... I had the exhaust welded up but the seal on the downpipe got lost. I put everything back together and didn't realize it. Started tuning again and noticed the exhaust leak. Ordered a new at parts store and won't be here till Monday. So anxious to get driving it but all these little setbacks.

On another note... I replaced my throttle cable. The pedal when not depressed has some play, you can lift the gas pedal a bit. I'm sure you all know what I'm talking about. I was really suprised when I installed the new throttle cable the same play was there as the old cable. Kind of a waste. I see people putting zip ties on their throttle cables but if factory made it with that play probably is there for a reason, no?

 

[Matthew Jeschke]

The moment is near. I started up the truck, did a little last minute idle bump to keep it from stalling. I'm super nervous, I have to go drive and log MAF data before I switch to speed density tuning. Wish me luck!

PS. The lifters sound really TRIPPY! I cannot describe it, but when I rev to 3k RPM you really hear them.

 

[Tonyrodz]

The moment is near. I started up the truck, did a little last minute idle bump to keep it from stalling. I'm super nervous, I have to go drive and log MAF data before I switch to speed density tuning. Wish me luck!

PS. The lifters sound really TRIPPY! I cannot describe it, but when I rev to 3k RPM you really hear them.

We need a video!

 

[Matthew Jeschke]

Trying to upload now

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[Matthew Jeschke]

These lifters sound AWESOME. Never thought I would say that, but damn, people think I'm revving a racecar.

Currently doing Mass Air Flow Calibration then will move onto the speed density tuning. It's bit of a pooch but I think I needs more timing advance. It's basically running on 5.3L tune haha

Link to video on Google Drive

 

[Matthew Jeschke]

The computer was pulling timing here... Not sure why? I don't have any knock sensor counts.

 

[Matthew Jeschke]

The computer pulled timing, not sure why?

 

[fasteddy]

These lifters sound AWESOME. Never thought I would say that, but damn, people think I'm revving a racecar.

Currently doing Mass Air Flow Calibration then will move onto the speed density tuning. It's bit of a pooch but I think I needs more timing advance. It's basically running on 5.3L tune haha

Link to video on Google Drive

Looking good so far......
Good Oil pressure.
Std Temp...I prefer lower.
Good smooth idle
Nice smooth revving and good return

I didn't hear any abnormal lifter noise, maybe get a video from engine bay.

On the tune....did you start with a base 6.0 tune?
With that cam and stock injector size, you're gonna reach peak duty cycle fairly quick.

 

[Matthew Jeschke]

Yeah I've got stock injectors I found a great deal on them and paid like $50 or something for all 8 from AC Delco. Should have bought the big 8 liter injectors though *sigh*.

I can definitely hear the lifters. Not sure if my microphone can pick it up. Sounds like a sewing machine haha And DAMN does it have a nice scream once I rev to 4500ish, however, trying to not do that tooooo much till it's broken in a bit more haha

Right now my baseline is the 5.3L tune that was in the computer. I'm running off the MAF only though. Getting the MAF sensor calibrated per Goat Rope Garage Tutorials. I think spark is all messed up though. It isn't too powerful down low but gets big kick in the pants as it takes off around 3000 RPM.

I went under general engine settings and updated the engine to 6.0L with .75L per cylinder. Interestingly that bumped up the VE table a bit so not sure if that will be enough to get me in the ball park for speed density tuning or if I'll have to copy the VE table from an LQ9. I'll have to find out. I don't think MAF only tune I'm running right now uses the VE tables but I'm a nubie so possibly wrong.

That was knock that triggered computer to pull timing. It wasn't registering right in the waveform graph. I switched the variable to another and it displayed the knock count. Learning as I'm going, just hate to see knock as well I think that's was breaks engines.

What temp do you run your stuff at? I have a 160 thermostat in my Corvette. You think is a good idea for the truck too? This engine REALLY puts off the heat. I almost wonder if it needs a larger radiator too. Although maybe possible heat is from me disabling the stuff to cool the catalytic converters in the tune too. not sure?

Learning lots. Really exciting! It has soooo much power I almost wonder if I'm stuck in a low gear or have 4 low on haha. Transmission doesn't go past 160F but it shifts weird, like not crisp but hard. I should have checked input shaft play before I put the motor back in. Hopefully lives till I can build the new one.

 

[fasteddy]

..... It isn't too powerful down low but gets big kick in the pants as it takes off around 3000 RPM.

That's the cam.
With a nice size cam a 6.0 behaves much like an LS3.....only .2 difference in cubes.

On your log file the coolant temp was 201, which is fine.
The folks on the HPTuners website can help you with your tune and logs.

This guy can help with remote tunes.....he's really good....
[email protected]