Interesting dyno comparison

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Nov 1, 2007 | 03:24 AM

#21

cv67

Team Owner

Joined: Oct 2004

Posts: 81,241

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From: altered state

St. Jude Donor '05

Anyone do the 14:1 AFR mod? Good for a few tenths I hear

Nov 1, 2007 | 12:03 PM

#22

95wht6spd

Le Mans Master

Joined: Jul 2000

Posts: 7,634

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From: Greenville SC

lol no thanks!
I'll stick to my 11.2:1

Nov 1, 2007 | 04:40 PM

#23

Gonzo

Le Mans Master

Joined: Dec 2000

Posts: 7,096

Likes: 153

From: "Atlanta" Ga.

Great Thread

Nov 1, 2007 | 05:22 PM

#24

jonecap

Drifting

Joined: May 2005

Posts: 1,370

Likes: 1

From: Raleigh NC

Quote:

Originally Posted by 95wht6spd

lol no thanks!
I'll stick to my 11.2:1

That's really rich for a N/A car. A conservative tune is 13:1 with the tailpipe sniffer. You're leavin' some power on the table if that's your WOT A/f ratio.

Nov 1, 2007 | 05:25 PM

#25

neat

Thread Starter

Melting Slicks

Joined: May 2001

Posts: 3,014

Likes: 18

From: Raleigh, NC

I'm not sure where your getting 11.2:1 Todd, your A/F ratio at the shop the other day was a low 13. It's about 13.2 on the graph I posted, which is probably closer to 12.7 or so at the engine.

Was it 11.2 at CAM or something? Am I missing something? I feel like I'm left out of the loop, lol.

Nov 1, 2007 | 05:38 PM

#26

Umrswimr

Team Owner

Joined: Apr 2001

Posts: 36,453

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From: Overwhelmed as one would be, placed in my position.... DFW, TX

St. Jude Donor '05

Man, that LT4 is impressive.

Nov 1, 2007 | 05:44 PM

#27

mrc24x

Burning Brakes

Joined: Aug 2005

Posts: 1,172

Likes: 9

From: '88 TPI L98/HotCam Powell, Ohio

11.2?? Must not be too many mosquito's left in your neighborhood.

A lot of roadrace guys are running 13.2-13.5 w/out any problems. (mine on the final blue run was around13.7 at the tailpipe) Plugs look good and no knocks.