Help with tuning question

[dsapper]

Still working on the tuning and have a question. Fuel pressure is at 42 @ idle with the vacuum line off, iac is at 20, tps is at .44, blm is at 115-120 and my o2's are bouncing around the 700's to low 800's. I have boost turned as far down as I can for now (15psi ish but havent been above single digits)I have a turbotweak set up for alky and the mods in my signature

I have alky turned to #7 on the dial and its working. Durring wot the fuel pressure stays good and the o2 is good too. But I started having knock retard and I'm not sure why. I was in 3rd or 4th with maybe 8-9 psi.

 

[huntsg]

How much knock? Was it during a shift or does it start and rise? I'd start at the MAF. Do you have a known good Z06 MAF you could try and see if there is a difference?

 

[dsapper]

Jumped upto 3 degrees. Starts and rises. No, well maybe I have a grandsport but I'd have to look at what size the maf is.

 

[we4Mateo]

What's the chip setup for as far as boost is concerned? Turn the alky back to 6. You may have kr from being too rich.

 

[dsapper]

22-25 pounds but I don't want to turn it up till its safe

 

[we4Mateo]

Then you'll need to turn the alky back to 6 and take away at least 10% of your wot fuel, probably 15%-20%. The chip wants to run at 25psi and is delivering that much fuel at wot. You're seeing rich knock.