weird problem tuning on the dyno
09-26-2005, 10:17 PM
#1
TECH Fanatic
Thread Starter
iTrader: (3)
Join Date: Sep 2002
Location: NC
Posts: 1,943
Likes: 0
Received 0 Likes
on
0 Posts
weird problem tuning on the dyno I ran into a problem tuning my car on Saturday that I have never run into before -- with my car, or any of the other cars I have tuned/helped tune.
Basically I would load a program, then start the car and start to make a pull. Everything was still at operating temperature. The air/fuel would just stay right at 14.5 -- like the car was trying to regulate for normal driving. I would then have to turn the car off, then back on and make another pull -- which would end up giving the right air/fuel at WOT -- upper 12s.
It did this everytime I put a new program in -- 7-8 times. Just wondering what was up with this.
Thanks
Basically I would load a program, then start the car and start to make a pull. Everything was still at operating temperature. The air/fuel would just stay right at 14.5 -- like the car was trying to regulate for normal driving. I would then have to turn the car off, then back on and make another pull -- which would end up giving the right air/fuel at WOT -- upper 12s.
It did this everytime I put a new program in -- 7-8 times. Just wondering what was up with this.
Thanks
09-27-2005, 09:54 AM
#3
TECH Fanatic
Thread Starter
iTrader: (3)
Join Date: Sep 2002
Location: NC
Posts: 1,943
Likes: 0
Received 0 Likes
on
0 Posts
No emissions of any kind on the vehicle. Air pump gone, EGR gone, Cats gone, COT enable turned off. None of that stuff has changed in a long time.
Let the car idle for a minute while I turned on EFIlive to monitor -- everything same as I've always done. Part throttle as I went through the gears to start the dyno.
Let the car idle for a minute while I turned on EFIlive to monitor -- everything same as I've always done. Part throttle as I went through the gears to start the dyno.
