should you reset pcm after every mod?
should you reset pcm after every mod? my ? is just as the title says? after any intake or exhaust mod should you do a reset? and if so is there any special precedure to do if using a different than stock tune? (like predator). what is the best way to do a reset if needed?
tia!
tia!
from what i have seen the pcm learns fast. i wouldn't worry about it.
it has to learn where to be weather it starts from scratch or from what it allready knew before your new mods. from scratch is probably farther off than what it all ready knows.
it has to learn where to be weather it starts from scratch or from what it allready knew before your new mods. from scratch is probably farther off than what it all ready knows.
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
well.. since you're supposed to discon the battery for any mods (at least anything that takes more than 15 mins) ... your PCM will have to relearn anyways....
(trust me... when u work on your car... discon the battery... I've had some shocking... er sparking experiences before cause I was in a hurry)
To reset the PCM pull PCM Bat and PCM Ign fuses under the hood (do while car is in run)
wait a few minutes (turn key on and off ... not sure if necessary but I always do it)
w/a "stupid" PCM you can just start driving... or you can do an idle relearn (not sure what tranny u have)
I think the process is something like put in Drive w/Ebrake on for 5 mins, put in N for 5 mins ... (for auto trans) ... but not 100% sure... I reset my PCM quite often and i just reset and drive off... car wont idle great for first few mins but it learns fast
(trust me... when u work on your car... discon the battery... I've had some shocking... er sparking experiences before cause I was in a hurry)
To reset the PCM pull PCM Bat and PCM Ign fuses under the hood (do while car is in run)
wait a few minutes (turn key on and off ... not sure if necessary but I always do it)
w/a "stupid" PCM you can just start driving... or you can do an idle relearn (not sure what tranny u have)
I think the process is something like put in Drive w/Ebrake on for 5 mins, put in N for 5 mins ... (for auto trans) ... but not 100% sure... I reset my PCM quite often and i just reset and drive off... car wont idle great for first few mins but it learns fast
TECH Addict
Joined: Sep 2003
Posts: 2,065
Likes: 0
From: Atlanta, GA
i dunno bout that drive with ebrake on an auto thing. toasty brakes.
hptuners may be putting hard reset into their app shortly. its requested.
if its a light mod you might just go drive it for 50 miles and let it learn. If its a heavy mod (Cam,headers) you gotta wideband tune it anyways.
what mod are we talking bout?
things like a ASP pulley i doubt anything is necessary..
hptuners may be putting hard reset into their app shortly. its requested.
if its a light mod you might just go drive it for 50 miles and let it learn. If its a heavy mod (Cam,headers) you gotta wideband tune it anyways.
what mod are we talking bout?
things like a ASP pulley i doubt anything is necessary..
Teching In
Joined: Apr 2004
Posts: 11
Likes: 0
Originally Posted by ZDOG
thanks for the replies. nottin big, minor intake crap.
thanks
thanks
