Fuel Air ratio for N/A

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12-08-2008, 07:40 AM

blkstang39

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Fuel Air ratio for N/A

Can anyone tell me what the best Fuel air ratio is on a custom dyno tune?
I was told that 13 is best for N/A.

Thanks in advance!

12-08-2008, 10:40 AM

mygt500

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At WOT I cant remember but I believe it is a tad lower?....A/F ratio at idle like 14.7

12-08-2008, 11:06 AM

HaneyMotorsport.Com

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Every car responds a little different. Anywhere from 13.1 to 12.9 is good for N/A

Casey

12-08-2008, 11:36 AM

mygt500

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Thanks Casey! thats what I was thinking

12-10-2008, 04:02 PM

blkstang39

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Perfect that's right where I'm at!

13

12-10-2008, 04:12 PM

ANBAUTO

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I like it a little richer ide like to see 12.9 to 12.5

12-10-2008, 10:28 PM

07musclemustang

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13 is just right maybe at 13.5 if you like playing on the dangerous side

12-16-2008, 09:10 AM

VistaGT

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I know this is a few days old but everyone ignored my question in my dyno post lol. I'm at 13.5 right now.....from what I have gathered from here this is not very good???

12-16-2008, 12:05 PM

300GT

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Quote:

Originally Posted by VistaGT

I know this is a few days old but everyone ignored my question in my dyno post lol. I'm at 13.5 right now.....from what I have gathered from here this is not very good???

13.5 is about as lean as you'd ever want to take it (N/A). But it does explain how you are getting the numbers you got with your mods.

12-16-2008, 01:39 PM

#10

VistaGT

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Well I called brenspeed and they said anywhere from 13-14 is okay for an N/A car. They also said the tailpipe measure AFR always reads a little leaner than it actually is.

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