Am I safe here?

[UndergroundR32]

I did two 3rd gear pulls at only 16 psi with boost creep up to 20 psi when I got into the higher RPM. My knock counts were 0 through the whole thing except at one point when I had only 1 count of knock. Now from what I know, my stock narrow band o2 sensor isn't going to tell me much of anything worth while. However, when I started to get up past 6000 rpm, the o2 went from .89 and got as low as .83. Does this mean anything or am I safe since I had no knock at all and my timing never got above 25?


edit: btw I think I'm running pig rich over the whole board.

 

[Blk_99gst]

I would trust the knock value and timing values more than o2 voltage. If you are only getting 1 count of knock, then I would say that's pretty good. No knock, timing increases, and questionable o2's, I wouldn't worry. Lots of knock, timing getting pulled, and questionable o2's, then I'd worry.

 

[gvr4in]

Ya, You're fine. Nothin to worry about.

 

[kpt4321]

With no knock, you are safe.

However, it does look like you are leaning out up top; that is probably due to the boost creep reaching the limitations of your injectors.

 

[UndergroundR32]

Originally posted by kpt4321
With no knock, you are safe.

However, it does look like you are leaning out up top; that is probably due to the boost creep reaching the limitations of your injectors.

Limitations of the injectors? They're 720's!!!


Maybe the RX7 TT fuel pump I'm using isn't supplying enough fuel. I was worried that might happen and I'd be forced to get a Supra or walbro pump or something.

 

[talon1979]

Do you have the grounstrap on your downpipe hooked up?

 

[UndergroundR32]

Originally posted by talon1979
Do you have the grounstrap on your downpipe hooked up?

No, why?

 

[talon1979]

I could be wrong, but the ground strap helps the o2 sensor to have a better ground, as well as remove static electricity from the exhaust.

 

[UndergroundR32]

Originally posted by talon1979
I could be wrong, but the ground strap helps the o2 sensor to have a better ground, as well as remove static electricity from the exhaust.

I'm not concerned. Never come across anyone having a problem with the absence of a ground strap.