good pcm question?
Thread Starter
On The Tree
Joined: Jul 2005
Posts: 122
Likes: 0
From: peoria, AZ
good pcm question? ok i have hptuners. im a little confused with everyone talkin about how "the computer needs to learn a tune," and "after about 500 miles u will notice your tune gets better." cause when i change things with my pcm. they are instant. it doesnt take a few days of driving around for me to notice them. if i add a lot of line pressure it changes right then and gets more firm. same with timing exc. same with tuning a truck on a dyno. a dyno tuner can get 20-30 hp out of a pcm with in an hour on the dyno and the gains are instant.
so am i missing sumthing here? is there a difference in changing the pcm compared to rewriting it. either way they can be competley new to the truck.
explain please
so am i missing sumthing here? is there a difference in changing the pcm compared to rewriting it. either way they can be competley new to the truck.
explain please
Last edited by boomers03gmc; Oct 25, 2005 at 06:32 PM.
