4” down pipe
cat
28” muffler

There is a zero percent chance the cam is degreed properly.

 

That’s a pretty significant chance.

What fly by night shop did the work?

 

I’m in the Deep South so we have many guys that do LS work in big garages at their houses.
this one does a lot of dod deletes.
I’m pretty sure if it was a single bolt non vvt cam gear they wouldn’t have messed it up. It’s a straight up cam install that’s advanced 4 degrees on the cam.

 

So the cam was degreed and cam gear changed.
the over advanced code has gone away.
I had the truck dyno tuned again and with a now installed 3 bar map we found the truck was only seeing 6 lbs of boost. I have a mechanical gauge on its way to replace the digital one that is clearly not reading correctly.
the truck on 8-10 lbs made almost no more power.
417 on 10 lbs
here is the graph

Sorry for the reflection
Does anyone have any suggestions? The boost curve also follows the hp curve. Peaks, then dips and flattens out.
the truck detonated in the dipped area after the spike

 

I want to see the tune file and data logs from the pulls or street driving.

 

Hopefully you have your plugs gapped right.

.025-.027 would be ideal.

I’m with FFDP. Let’s see the tune and the logs. At that boost level, you should still be able to run 17-18 degrees of timing safely.

 

I don’t have either right now but I’ll get them. I’ll post them in a couple of days


I do have full exhaust including a catalytic converter with a 28” magnaflow muffler.

 

And yes br7 plugs gapped at .28

 

Just a cat? How far down the downpipe is it?

Single cat I'd be worried you've got a restriction, and worried the cat may or may not be melted at this point

 

I agree. I had it taken off yesterday and the truck feels better. I’ll get some logs to see if we have detonation in that same area of rpm on the street.