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Old Mar 5, 2015 | 08:39 AM
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just wondering

Hello I have a 1999 f250 I put a super chip on it and every time I get on it it chatters loadly on and off just wondering what it mite be thanks
 
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Old Mar 5, 2015 | 09:03 AM
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Originally Posted by skater952003
Hello I have a 1999 f250 I put a super chip on it and every time I get on it it chatters loadly on and off just wondering what it mite be thanks
Plus it is a stock truck to if that helps
 
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Old Mar 5, 2015 | 09:45 AM
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Sounds like some pre-ignitions issues. If your are running 87 or 79 octane fuel, step up a grade. If the tuner is trying to create more h.p., it will advance the ignition and with lower octane gas, you will get that chatter.
If it has multiple settings, try a lower aggressive setting to see if it helps.
 
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Old Mar 5, 2015 | 11:54 AM
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Originally Posted by r2millers
Sounds like some pre-ignitions issues. If your are running 87 or 79 octane fuel, step up a grade. If the tuner is trying to create more h.p., it will advance the ignition and with lower octane gas, you will get that chatter.
If it has multiple settings, try a lower aggressive setting to see if it helps.
. I'm sorry its a diesel 7.3
 
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Old Mar 5, 2015 | 12:32 PM
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Originally Posted by r2millers
Sounds like some pre-ignitions issues. If your are running 87 or 79 octane fuel, step up a grade. If the tuner is trying to create more h.p., it will advance the ignition and with lower octane gas, you will get that chatter.
If it has multiple settings, try a lower aggressive setting to see if it helps.
. I'm sorry its a diesel 7.3
 
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