Boost issue, or PCM re-learn?
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Elder User
Joined: Jul 2010
Posts: 543
Likes: 3
From: Gilmer, TX.
Boost issue, or PCM re-learn?
Okay, everything is new. Even the PCM. I installed the new PCM, uploaded my gear head tune, and was absolutely thrilled. I'm still thrilled, but suddenly with ALOT more smoke. Nothing was changed. I just did an air test on the CAC system, and while there is a steady bleed-off, (There's always going to be some, valves open, etc.) it's no worse than it was before. It's just that now, I'm rolling coal big-time. Rolling at 40 MPH, I can floor it, and a big cloud rolls out. It doesn't last long and cleans up quick, but it's just more smoke than I want. Did the PCM finish a re-learn cycle, or am I just being picky?
I can keep it from rolling coal with a little throttle control, I'm just curious.
My tune is Full Fuel. The rest of my build is in my sig.
I can keep it from rolling coal with a little throttle control, I'm just curious.
My tune is Full Fuel. The rest of my build is in my sig.
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Elder User
Joined: Jul 2010
Posts: 543
Likes: 3
From: Gilmer, TX.
Turbo was just put together. (KC Stage II Roll-your-own) Update, the air pressure seems to be leaking back through the turbo drain pipe. I was getting just a touch of air through the PCV, and when I plugged it with my finger, I heard a gurgling sound.
I just ran it down the road and back, and according to Torque Pro, I maxxed out at either 24 or 29 PSI. (Red arrow pointing at 24, and yellow arrow pointing at -29.) I feel like there was more there, but I was running into wheel spin issues, and once she breaks loose, she's a handful. For a similar reason, my Glow-Shift boost gauge is all but useless. When I'm most interested to know what the boost level is, also happens to be the point in time where I most need to be focused on the road.
I just ran it down the road and back, and according to Torque Pro, I maxxed out at either 24 or 29 PSI. (Red arrow pointing at 24, and yellow arrow pointing at -29.) I feel like there was more there, but I was running into wheel spin issues, and once she breaks loose, she's a handful. For a similar reason, my Glow-Shift boost gauge is all but useless. When I'm most interested to know what the boost level is, also happens to be the point in time where I most need to be focused on the road.
Lead Driver
Joined: Jul 2004
Posts: 6,950
Likes: 510
From: Foothills, CA
Your boost gauge shouldn't go that negative in Torque. Try setting up data logging and run around a bit with the logging on. I'd keep it simple and do like RPM and boost and maybe fuel pulse just for grins...
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