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Old 04-01-2015, 01:28 AM
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WK2 SRT Air Fuel Ratio AFR

Hi guys,

I've been looking all around without finding a trusted source to confirm this. What is the recommended air fuel ratio at WOT for a NA 2014 6.4 Jeep SRT. At idle, I'm getting almost 16, while at WOT I'm getting 13. is this behavior normal. I'm arguing with my tuner that it should be richer, i.e. at around 15 for idle and 12.5 for WOT. If someone can also provide a dyno sheet, that would be great.

Just in case anyone is wondering:
Kooks 1 7/8 with green cats
Borla S-Type axle back
Bwoody CAI
Jet Thermostat
IRadium IX sparks


Thanks.

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Old 04-13-2015, 07:42 AM
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Re: WK2 SRT Air Fuel Ratio AFR

If your arguing with your tuner and he's not sure I would find another tuner APAP just saying bro'
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Old 04-23-2015, 10:16 AM
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Re: WK2 SRT Air Fuel Ratio AFR

Ноw did you measure AFR ?
Using external O2 sensor or logs from diablo ?


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Old 04-24-2015, 08:52 AM
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Re: WK2 SRT Air Fuel Ratio AFR

Quote:
Originally Posted by AlexIVK View Post
Ноw did you measure AFR ?
Using external O2 sensor or logs from diablo ?


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Most measure from the Bungs and an internal gauge.
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Old 04-24-2015, 10:30 AM
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Re: WK2 SRT Air Fuel Ratio AFR

I measured AFR at my 5.7 hemi via diablo logs. I made diablo 91 octane tune and increased WOT fuel by 5%. To exclude occasional knock retards as I was not sure in fuel. At WOT drive above 4000 rpm AFR was about 11.35. One specialist told me that 11.35 too rich. Without load I drive at about 14.5


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Old 04-24-2015, 09:50 PM
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Re: WK2 SRT Air Fuel Ratio AFR

Quote:
Originally Posted by Yaga View Post
Hi guys,

I've been looking all around without finding a trusted source to confirm this. What is the recommended air fuel ratio at WOT for a NA 2014 6.4 Jeep SRT. At idle, I'm getting almost 16, while at WOT I'm getting 13. is this behavior normal. I'm arguing with my tuner that it should be richer, i.e. at around 15 for idle and 12.5 for WOT. If someone can also provide a dyno sheet, that would be great.

Just in case anyone is wondering:
Kooks 1 7/8 with green cats
Borla S-Type axle back
Bwoody CAI
Jet Thermostat
IRadium IX sparks


Thanks.
My dyno tuner had my 07 jeep at wot was 12.2/12.5 with only mod cai and when i dynoed my bone stock 06 magnum the stock tune was at wot was 11.6. Never checked it at idle.
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