My baby's getting a new PCM. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 08-30-2005, 02:42 PM   #1
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Feb 2005
Location: Southern Maine
Posts: 756
Thanks: 0
Thanked 0 Times in 0 Posts
Paul is on a distinguished road
Default My baby'* getting a new PCM.

I am putting a new PCM from Intense Racing tomorrow morning in my 2001 SSEi and right after that I am getting the CASE learn done. I can't wait to see how she does with it. From everything I have heard I should see some real improvment. Now it'* just a matter of waiting 17 hours.

Paul is offline   Reply With Quote
Old 08-30-2005, 05:10 PM   #2
Senior Member
Posts like a Turbo
 
Join Date: May 2005
Location: Stockton, CA
Posts: 251
Thanks: 0
Thanked 0 Times in 0 Posts
hvactech is on a distinguished road
Default

Got mine recently too. Haven't really got on it because of the heat here, but it feels better. Haven't got the case learn done because I can't find anyone to do it. Even if I explain what it is and that it takes all of five minutes, they want to charge me $100.00. I don't think so. Plus the car seems to run fine without it.
hvactech is offline   Reply With Quote
Old 08-30-2005, 08:01 PM   #3
Senior Member
True Car Nut
 
Join Date: Jul 2003
Location: Westerville, Ohio 2000 Black SSEi
Posts: 6,127
Thanks: 0
Thanked 0 Times in 0 Posts
Rogue is on a distinguished road
Default

Quote:
Originally Posted by hvactech
Got mine recently too. Haven't really got on it because of the heat here, but it feels better. Haven't got the case learn done because I can't find anyone to do it. Even if I explain what it is and that it takes all of five minutes, they want to charge me $100.00. I don't think so. Plus the car seems to run fine without it.
Please don't take the car over 1/2 throttle until you get the CASE done. This is not an optional step.
Rogue is offline   Reply With Quote
Old 08-30-2005, 08:22 PM   #4
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Feb 2005
Location: Southern Maine
Posts: 756
Thanks: 0
Thanked 0 Times in 0 Posts
Paul is on a distinguished road
Default

Quote:
Originally Posted by Rogue
Please don't take the car over 1/2 throttle until you get the CASE done. This is not an optional step.
No problem there, I am headed right to the dealership, all in town driving.

Thanks for the input.

BTW, I just finished the Security learn, no problems.
Paul is offline   Reply With Quote
Old 08-31-2005, 01:15 PM   #5
Senior Member
Posts like a Turbo
 
Join Date: May 2005
Location: Stockton, CA
Posts: 251
Thanks: 0
Thanked 0 Times in 0 Posts
hvactech is on a distinguished road
Default

Quote:
Originally Posted by Rogue
Quote:
Originally Posted by hvactech
Got mine recently too. Haven't really got on it because of the heat here, but it feels better. Haven't got the case learn done because I can't find anyone to do it. Even if I explain what it is and that it takes all of five minutes, they want to charge me $100.00. I don't think so. Plus the car seems to run fine without it.
Please don't take the car over 1/2 throttle until you get the CASE done. This is not an optional step.
Now you're scaring me......what can happen? I've already had WOT a couple short times :(

My brother replaced his PCM in his Regal and no case learn....never had a problem. DId he just get lucky?
hvactech is offline   Reply With Quote
Old 08-31-2005, 01:30 PM   #6
Senior Member
True Car Nut
 
Join Date: Jul 2003
Location: Westerville, Ohio 2000 Black SSEi
Posts: 6,127
Thanks: 0
Thanked 0 Times in 0 Posts
Rogue is on a distinguished road
Default

Quote:
Originally Posted by hvactech
Quote:
Originally Posted by Rogue
Quote:
Originally Posted by hvactech
Got mine recently too. Haven't really got on it because of the heat here, but it feels better. Haven't got the case learn done because I can't find anyone to do it. Even if I explain what it is and that it takes all of five minutes, they want to charge me $100.00. I don't think so. Plus the car seems to run fine without it.
Please don't take the car over 1/2 throttle until you get the CASE done. This is not an optional step.
Now you're scaring me......what can happen? I've already had WOT a couple short times :(

My brother replaced his PCM in his Regal and no case learn....never had a problem. DId he just get lucky?
There is a variation between the 3x, 18x crank sensors in all cars. The crankshaft variation learn procedure teaches the PCM what this variation is. Based on that variation the PCM can determine how to skew its request for timing. For example, if the sensors are off by +3 degrees, the PCM would learn this and when it wants 15 degrees it would ask for 12 to get the 15 (12 +3).

Now, take a PCM that has a learned variation of -3 and stick it in a car with an actual variation of +3. The PCM wants 15 degrees so it askes for 18 (18 -3 = 15) however the actual variation is +3 so the car is now getting 21 (18 +3 = 21). I think you can see where this is going. If you reverse this and take a positive variation PCM and put it in a negative variation car you would be safe however you would be giving up quite a bit of performance.

Make sense?
Rogue is offline   Reply With Quote
Old 08-31-2005, 04:21 PM   #7
Senior Member
Posts like a Turbo
 
Join Date: May 2005
Location: Stockton, CA
Posts: 251
Thanks: 0
Thanked 0 Times in 0 Posts
hvactech is on a distinguished road
Default

Makes perfect sense. I've never heard it explained like that, So basically without having a case learn done, you could either be getting less timing which would equal slower then you could be, OR you could be demanding too much timing which can harm the motor.
Looks like I'll be getting it done.
Thanks!
hvactech is offline   Reply With Quote
Old 08-31-2005, 04:33 PM   #8
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Feb 2005
Location: Southern Maine
Posts: 756
Thanks: 0
Thanked 0 Times in 0 Posts
Paul is on a distinguished road
Default CASE Learn is done.

The dealership didn't want to do the CASE learn at first, concerned that something with the car or computer would mess up. Finally convinced them to go ahead after I pulled my original PCM from the trunk and showed them I could swap back if we had to. I thought I was really stuck there for a minute.
Paul is offline   Reply With Quote
Old 08-31-2005, 08:26 PM   #9
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Feb 2005
Location: Southern Maine
Posts: 756
Thanks: 0
Thanked 0 Times in 0 Posts
Paul is on a distinguished road
Default

Holy @#$%

On my drive home once traffic opened up I decided to get on it and go WOT to see what would happen, at 65 mph the car dropped 2 gears and shot to about 5500 rpm and from the time I hit it to the time I was able to look at the speedo I was already at 105. Holy @#$%.

Not to mention the fact that that stupid 35/40 mph lag is gone.

So far very pleased.
Paul is offline   Reply With Quote
Old 08-31-2005, 10:51 PM   #10
Executed
 
Join Date: Aug 2002
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
BadSSEi is on a distinguished road
Default

Glad you like our PCM Paul.

You have a GREAT signature!!!
BadSSEi is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
ZZ Performance PCM vs INTENSE PCM Hans Performance, Brainstorming & Tuning 18 09-05-2007 09:44 PM
removing factory PCM and installing intense PCM question 350TPI 2000-2005 23 07-20-2007 02:07 PM
96 Regal PCM and 96 Bonne PCM interchangeable? 96GrandPrix 1992-1999 7 04-06-2006 07:22 PM
Getting close to getting a chip... TrueWildMan Performance, Brainstorming & Tuning 20 06-15-2004 10:28 AM
Getting new job.. getting paid, getting mods Wolfedog50 Performance, Brainstorming & Tuning 3 05-08-2003 02:31 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 08:13 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.