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Discussion Starter #1 (Edited)
My son's truck has 4k gov springs, 191 injectors and delivery valves are( 60 cc ) over stock, are they too big? Everything else is stock, he thinks they're too big and says it hazes at idle and it shouldn't.Are they dumping too much fuel for that setup.
 

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What year truck?
Auto or Manual?
What pump is on it?
What size injectors?
What is timing set at?
Have either of you been in the AFC yet?


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191's are a dirty mess .
Soot at idle . Soot regular driving . Embarrassing smokeage .

Dont ask how i know this ...
 
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