Okay, I had my car dyno'd on a Mustang dyno, not a dynojet, and the numbers came out okay but not great. It put down 262rwhp through an A4. People tell me not to worry because 262 on a Mustang dyno is like 290 on a dynojet. Anyhow, I was looking at my dyno sheet and my air/fuel was 11.8 or 11.9 through the whole power band. Isn't that really rich? I reset the computer about one week and maybe 30 miles before this dyno run. Could that be why I dyno'd really rich?

 

I think that is where GM has it set to be safe...

 

Where did they stick the A/F monitor in you exhaust?

 

I really don't know. I wasn't there when he did it. It was a friend's shop and I dropped the car off and picked it up later that day.

 

Mine was 11.8 with the sniffer in the rear 02 bung. Same out the tail pipe when stock. That lasted 500 miles!

 

Mine was running around 13.2 when the car was stock.

 

About 12, had only a lid, and I'm at 5300ft above sea level. Probably makes it a little more rich than if I dyno'd at sea level.

 

Wow, that's pretty lean for a stocker