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  1. recycleoldgrowth

    2004 8.1L Ticking/Rattling @ 1800 RPM

    So my 8.1 has 130K, no mods. I'm the third owner, was sold to me out of Canada. Some good amount of rust on the undercarriage but nothing to alarming. Recently I hear a loud Ticking/Rattle right at 1800RPM that will continue if I hold it there. I'm assuming it's on of two things, lose heat...
  2. recycleoldgrowth

    Best tuner for 2004 chevy 8.1L?

    Wondering what you all think would be a good tune for my gas hog. Not looking to brake the bank here. Tell me what you know about what the gains may be, thanks in advance. Sent from my SM-G530T using Tapatalk
  3. recycleoldgrowth

    Important!: Can't locate ANY vacuum lines? !

    I can not for the life of me find one single vacuum line on my 2004 chevy 2500 8.1L, also has no EGR valve. I have an Idle bounce and am trying to figure out what the problem is. Took the fuel pressure at the rail. At KOEO was 55psi, KO pressure holds. At idle it reads able 63psi and will rise...
  4. recycleoldgrowth

    Slight idle bounce 2004 8.1L

    Just recently replaced my alternator thinking because it's diodes were going bad was why my idle was rough. Turns out that was not the case. The voltage swing is gone (except now when the idle drops, so does the voltage) but the idle bounce is still there. (We're talking from 600, to 500 then...