when you guys install your mail order tunes(pcmforless, etc.) with your new parts, does the pcm need time to re-learn? or does it run great right off the bat?

 

mine is still in the mail so i dunno for sure but i think you feel a big boost in power when first get it and it steadily gets better for the first 50 miles and then it levels off. maybe someone will chime in and confirm

 

I felt a noticeable increase as soon as I installed it, and it got better for the first few hundred miles. It seemed to get even better 3k miles later when I finally got the crank learned

 

but it doesnt act strange when you first install it, right? like funny idle and stuff like that.

 

some might idle a tad high at first or even a little low. after you drive it for a few minutes it iwll be fine. they get better with more miles on them to.

 

so when you did the crank learned and your SES light came off, your truck ran better????

 

It seemed to? Maybe I'm just crazy. When I first put in in, I didn't get the ses light, but after swapping with a friend for the third time, it came on. After I got the crank relearned it seemed to be a little more responsive, and shift better.

As far as running wierd when first installed, with the stock cam I had no problems, after I swapped cams, I had to do an idle relearn.

 

what about with more boost?

 

kk someone wanna explain the crank re-learn deal haha. Is it sometihng a programmer does...or jsut after time it does it. Wats the deal???

Thx guys

 

Everytime I have swapped pcms it idle wierd for alittle bit and it seemed to take aobut 300 miles for it to reach its full potential.