What Are Your A/F Numbers?

[uscbigdawg]

Was a little bored this morning and so I went to a local, small dyno shop to put the Mag on to see what the numbers came out compared to my last test (months ago). #'s were a little up from before (193 RWHP; 200 RWT) with 85 octane gas and only the CAI & exhaust. I attribute the slight increase to different equipment and it was freakin' COLD this morning.

Anyways, the air-fuel numbers were coming in pretty rich. First pull was like 12.08. Second was 11.35 and then 11.08. Nothing earth shattering, but thinking I'm giving up some ponies due to this. I'm not worried, just curious what others have got.

Here's a small video. Sorry for the crappy quality (especially the sound).

[Zoban]

with 85 octane gas

where the F you get a fuel rated that low .. Not that I want any but lowest you can buy here is 89..

[uscbigdawg]

Maybe 87...sorry, but the point is the cheap stuff.

Rich

[Zoban]

Doh I typo'd too lowest is 87 not 89.. bah Mondays ..

Decent numbers for being fairly stock there though ..

[Mics Mag]

Could it not be running a tad bit rich as by design? When its cold the choke used to make it run rich on the old engines. I'm sure its a sensed temp thing and auto adjusts rich for it. These dang things are so smart now.
Congrats on those numbers.

[ToddStone]

On my dyno tune, with the CAI and the R/T exhaust, they punched me in for 12.8 and I was registering 200 rwhp and 240tq, but then of course there were a whole slew of things that he did to get me to those numbers on a 91 tune.

[dudeiwin86]

sounds like the first run was spot on,
and the rest you were in Cat Overtemp Protection mode.