2012 Caprice pulling power after supercharger install
Thread Starter
On The Tree
Joined: Jun 2015
Posts: 129
Likes: 16
From: Salt Lake City Ut.
2012 Caprice pulling power after supercharger install Okay, I am getting a little frustrated here. My car is a 2012 Chevy Caprice former police car (LSA supercharged). I had the car tuned by one tuner and the car performed great for about a day (didn't beat up on it too much the first day). Then when I went to run the car and show it off a little, it would pull great for about 4 or five seconds, and then pull power. Once the car started misbehaving like crazy (as in hardly any power at all once the car pulled it), I had it tuned again by another tuner (after installing long tubes, so I needed to have the tune cleaned up anyway). Well, the car behaves somewhat better now, but still very bad. Once it pulls power the first time, it will still cruise and get up to speed just fine, but under heavy throttle, it will buck and surge until I shut it down and restart it. It does it every time I make a full throttle pull, whether it's from a dead stop or if I'm already doing freeway speeds.
It did throw a code for knock on bank 1 last night, maybe that has something to do with it, but the last time I logged a full throttle pull, it did not register any knock. I'll post up a log once I get a chance to do another full throttle run.
Here is a copy of the tune file. Can somebody please look at it and see if there is anything obvious?
It did throw a code for knock on bank 1 last night, maybe that has something to do with it, but the last time I logged a full throttle pull, it did not register any knock. I'll post up a log once I get a chance to do another full throttle run.
Here is a copy of the tune file. Can somebody please look at it and see if there is anything obvious?
I would take it back to the guy who you paid to tune it and have him look at it because nobody on the internet is going to know without a log file showing what is actually happening.
Thread Starter
On The Tree
Joined: Jun 2015
Posts: 129
Likes: 16
From: Salt Lake City Ut.
Thank you to those who replied. I got it figured out. The car was going into reduced power mode every time the car pulled 15 degrees of timing for any reason. My tuner found the table and zeroed it out. He also changed a couple of things in regards to the torque management and the car is pulling hard all the way up to redline.
