Need some small tuning help
05-31-2014, 05:59 PM
#1
Need some small tuning help
I got this thing just about dial in and it's running pretty damn good, I'm stoked.
Here is what I have. There is a slight cruise control going on while cruising. When coming to a stop it goes away so it's not like I'm fighting it with the brakes or anything. I've logged the raf and it is right where it wants it. Idle is strong no fluxes from P/N to gear. If I take anything from the raf table at all it doesn't like it. When it does this cruise thing it goes really rich, 12:1 rich. Soon as you bearly touch the gas it goes back to where it should be. Every once in a while if you get it in just the right spot while cruising real light throttle low rpm it will buck pretty hard. Also maybe I just haven't driven fast enough but it doesn't seem like my DFCO is working at all.
I had a bad misfire buck thing going on but the plugs fixed all that.
I'm in my phone at the moment but I'll get the latest tune and log posted up in a few minutes. Don't worry about the O2's fuel trims are turned off.
Here is what I have. There is a slight cruise control going on while cruising. When coming to a stop it goes away so it's not like I'm fighting it with the brakes or anything. I've logged the raf and it is right where it wants it. Idle is strong no fluxes from P/N to gear. If I take anything from the raf table at all it doesn't like it. When it does this cruise thing it goes really rich, 12:1 rich. Soon as you bearly touch the gas it goes back to where it should be. Every once in a while if you get it in just the right spot while cruising real light throttle low rpm it will buck pretty hard. Also maybe I just haven't driven fast enough but it doesn't seem like my DFCO is working at all.
I had a bad misfire buck thing going on but the plugs fixed all that.
I'm in my phone at the moment but I'll get the latest tune and log posted up in a few minutes. Don't worry about the O2's fuel trims are turned off.
06-01-2014, 11:02 AM
#5
Ok I doubled the follower again and cut more off the cracker and it seems to be getting a lot better now. Still a very slight cruise but any incline on the road slows the truck now where as before it could maintain a steady 35mph any where lol.
06-01-2014, 08:13 PM
#7
Oops forgot about that. I'll unlock it and repost. I'm at work right now so it will have to be in the morning. Totally forgot I don't even remember doing it that's how long it's been.
I need to do some research on getting this damn DFCO working. I had it at one point but it was real aggressive. Maybe I need to bump up the kpa value a little more. It's in the high 40's right now and when I let off that about where it hit on the logs. But the damn thing idles at 14-15% throttle.
Anybody know if you can recal the throttle peddle to where you don't have to push it down 16% before it opens? As in if the tb is at 15% to idle then the peddle full up should be at 15% so when you hit it, it's working already. Mine now feels like a loose throttle cable if that makes sence. Even though there is no throttle cable.
I need to do some research on getting this damn DFCO working. I had it at one point but it was real aggressive. Maybe I need to bump up the kpa value a little more. It's in the high 40's right now and when I let off that about where it hit on the logs. But the damn thing idles at 14-15% throttle.
Anybody know if you can recal the throttle peddle to where you don't have to push it down 16% before it opens? As in if the tb is at 15% to idle then the peddle full up should be at 15% so when you hit it, it's working already. Mine now feels like a loose throttle cable if that makes sence. Even though there is no throttle cable.
Last edited by TURBHOE; 06-01-2014 at 08:18 PM.