Recent content by superdoolie
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Loosing Power
I need some advise... I have a 99 doolie with a 6 spd, only mods are a k&n filter and the guy I bought it from says it has a chip (never seen it but it does blow some black smoke when i get on it). I am getting a terrible hissing on fast idle, or when im feathering the throttle at hwy speed. I...- superdoolie
- Post #10
- Forum: 7.3L PowerStroke Power & Performance
