4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

how to raise a/f ratio

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Old 11-28-2009, 05:12 PM
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vanbibber
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Default how to raise a/f ratio

i'm running a little lean, is there a way to richen it up without getting a dyno tune, is there a product out there that'll interupt the maf and make it think there's more air passing through than there really is for the computer to push more fuel to the motor?

thanks,

tim
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Old 11-28-2009, 05:18 PM
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Sxynerd
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No, sorry, it's not GM. You'll need a Hand held tuner. How do you know you're running lean?
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Old 11-28-2009, 05:43 PM
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vanbibber
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it was worth a shot, i know i've gotten a device like that for my 01 trans-am ws6 several years back, didn't know if there was one for ford...

just purchased an 04 supercharged gt recently and it's burned a couple of plugs electrodes off, i assume it's running lean, i know i need to have it dyno tuned just don't have a grand to have it done yet, trying to find something to get me by till then. I bought the car with and SCT tuner, so i know it's been turned, but apparently not tuned good enough.... unless you think there's another reason plugs are getting burned up.
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Old 11-28-2009, 05:56 PM
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It doesn't cost $1k for a dyno tune. 5-600 at most with dyno time and sniffer for a/f. If you have a handheld, buy a wideband for $200 and adjust the tune yourself. What plugs are you running? My S/C cars run TR6's. (As do I.)
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Old 11-28-2009, 06:54 PM
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vanbibber
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the only tuner close to where i live only uses diablo's so i'd have to purchase another handheld, so with that it would be close to a grand they said... i'm using tr6's now. didn't think i could make any adjustments with my sct xcal2, if so love to know how.
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Old 11-28-2009, 07:03 PM
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http://www.sctflash.com/techsupport.php
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