Performance chip and/or reprogramming the PCM? - Page 6 - 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.

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Old 02-04-2004, 11:13 PM   #51
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no. I was saying, I doubt my SE is optimized for the best shift timing...
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Old 02-04-2004, 11:21 PM   #52
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Quote:
Originally Posted by mremer
no. I was saying, I doubt my SE is optimized for the best shift timing...
"Performance Mode" does not mean optimized for best shifting. It is simply the normal shift points for that model year. Turning it off means the car is shifting sooner and getting into a higher gear for mpg reasons. The 00+ models don't have a performance button to kick down into a mpg save mode it simply runs at the normal shift points all the time, hence no "Performance Mode" button. That is why the DHP or other PCM'* raise the shift points to get it into the optimized shifting range for real performance...
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Old 02-04-2004, 11:26 PM   #53
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ok.
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Old 02-05-2004, 12:06 AM   #54
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2000 + SSEi'* do not have a performance shift button. It is always in normal mode.

The following is a direct response from DHP.

From: "Jason Jeross" <[email protected]>
To: 2000SilverBullet
Sent: Wednesday, February 04, 2004 6:53 AM
Subject: Re: Digital Horsepower PCM for 2000 SSEi


> The "performance switch" I am referring to is a simple ground toggle
switch
> that YOU must add if you want the mode selectable. Otherwise you can just
> add the single wire to the appropriate pin hole on the pcm connector and
run
> it to the frame for "always on" operation.
>
> The only thing this affects is shifting pressure/time. All of our other
> features are always active.


Quote:
I also found that an extra wire has to be installed to the harness on pin 21 and grounded for the performance shift. Did you just run the wire straight to ground or did you put it on a switch so it would shift like factory when you wanted it to? Any help would be great as I am just getting into this and I am messing with a brand new tranny (mine blew up last week... )
Pin 21, that'* good to know. I will connect a switch to mine.
....he blew up his trani.....see guys, another trani problem. Better install a cooler.
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Old 02-05-2004, 12:13 AM   #55
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SilverBullet, is this pin 21 only after a custom pcm or is it for stock too?
and what does the quote refer too? a prior post?
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Old 02-05-2004, 12:14 AM   #56
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Quote:
Originally Posted by 2000SilverBullet
2000 + SSEi'* do not have a performance shift button. It is always in normal mode.

The following is a direct response from DHP.

From: "Jason Jeross" <[email protected]>
To: 2000SilverBullet
Sent: Wednesday, February 04, 2004 6:53 AM
Subject: Re: Digital Horsepower PCM for 2000 SSEi


> The "performance switch" I am referring to is a simple ground toggle
switch
> that YOU must add if you want the mode selectable. Otherwise you can just
> add the single wire to the appropriate pin hole on the pcm connector and
run
> it to the frame for "always on" operation.
>
> The only thing this affects is shifting pressure/time. All of our other
> features are always active.


Quote:
I also found that an extra wire has to be installed to the harness on pin 21 and grounded for the performance shift. Did you just run the wire straight to ground or did you put it on a switch so it would shift like factory when you wanted it to? Any help would be great as I am just getting into this and I am messing with a brand new tranny (mine blew up last week... )
Pin 21, that'* good to know. I will connect a switch to mine.
....he blew up his trani.....see guys, another trani problem. Better install a cooler.
I thought there was nothing to change with the shift pattern on the 2000'*, that it is already in performance mode
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Old 02-05-2004, 12:31 AM   #57
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Quote:
SilverBullet, is this pin 21 only after a custom pcm or is it for stock too?
and what does the quote refer too? a prior post?
The info on the pin # came from Slamking18 in this post near the top of this page.

I believe it is only after the custom pcm is installed because it is a special programmed feature.

Quote:
I thought there was nothing to change with the shift pattern on the 2000'*, that it is already in performance mode
Only with the DHP reprogrammed PCM.
It is definitely not already in performance mode.....but maybe GM would like you to believe that.
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Old 02-05-2004, 12:44 AM   #58
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I will try to contact DHP directly to find out exactly whats up with this
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Old 02-05-2004, 12:47 AM   #59
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Quote:
TaylorD wrote:
Rogue & Silver, when did ZZP & Intense say they'd have your PCM to you guys. I wanna hear the results..


I was told 3 week lead time. i'm keeping my original PCM for dealer trips so I can drive until it arrives.
I prefer to deal with ZZP. They have very quick delivery and great delivery service.

10 days delivery was stated.

Don't forget that Zoomer is a GTP expert but he doesn't know Bonne'* that well.
.....or at least the guy that answers Zoomers e-mail.....I really wonder if Zoomer himself actually answers the E-mail questions.

Let'* face it, not too many guys who buy Bonnevilles mod them, so the aftermarket is not that familiar with them....yet.
Like Will once said.....squeal like a guinea pig.

I'm already out $400. on that Jet Module that only works with non supercharged 3800'*.
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Old 02-05-2004, 12:51 AM   #60
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Quote:
I will try to contact DHP directly to find out exactly whats up with this
I just got a response back from DHP and they said that their module does not explain how or where to connect the switch and refered me to www.clubgp.com
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