Hooked up HPtuners today and found.......
08-20-2007, 10:33 PM
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Hooked up HPtuners today and found....... Well i finally got HPtuners today and i was pretty amazed to find that my fuel trims were disabled. When i bought the car i was told it had been tuned which i have no doubt it was but why in the world would the tuner leave the car in open loop all the time? Well i turned the fuel trims on and i noticed a big difference in the way the car runs. There is much more throttle response and the car just seems to run a lot better so i am happy to say the least but i was just wondering why the tuner would do that?
08-21-2007, 10:41 AM
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Originally Posted by Frost
I tune in SD but even the ones that are dead on still get fuel trims re-enabled when I'm done 
