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Performance shift

 
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fastrunner08
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PostPosted: Wed Mar 13, 2013 12:10 am    Post subject:  Performance shift Reply with quote

I know i asked this about two or three years ago, and i have done some digging to try to find the thread about it, but the search isn't working or something, and 84 pages of old threads is alot to sift through so i'm just going to ask again. does anyone know how to do the performance shift mod, which allows your pcm to use the performance shift tables rather than the standard. It was my understanding that there is a pin on the PCM that you want to connect a wire to, and have that wire on a switch. If i remember correctly when the switch is on, that wire would bring that pin to ground causing the pcm to use the performance shift table. Does anyone know if that is correct and if so what is the pin you need?

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ScottMPala
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PostPosted: Wed Mar 13, 2013 12:23 pm    Post subject:  Re: Performance shift Reply with quote

fastrunner08 wrote:
I know i asked this about two or three years ago, and i have done some digging to try to find the thread about it, but the search isn't working or something, and 84 pages of old threads is alot to sift through so i'm just going to ask again. does anyone know how to do the performance shift mod, which allows your pcm to use the performance shift tables rather than the standard. It was my understanding that there is a pin on the PCM that you want to connect a wire to, and have that wire on a switch. If i remember correctly when the switch is on, that wire would bring that pin to ground causing the pcm to use the performance shift table. Does anyone know if that is correct and if so what is the pin you need?


get an overkill pcm and have that table permanently written. there is not much benefit to shifting at higher rpm without a tune anyway.

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Wingman520
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PostPosted: Wed Mar 13, 2013 3:29 pm    Post subject:  Re: Performance shift Reply with quote

ScottMPala wrote:
fastrunner08 wrote:
I know i asked this about two or three years ago, and i have done some digging to try to find the thread about it, but the search isn't working or something, and 84 pages of old threads is alot to sift through so i'm just going to ask again. does anyone know how to do the performance shift mod, which allows your pcm to use the performance shift tables rather than the standard. It was my understanding that there is a pin on the PCM that you want to connect a wire to, and have that wire on a switch. If i remember correctly when the switch is on, that wire would bring that pin to ground causing the pcm to use the performance shift table. Does anyone know if that is correct and if so what is the pin you need?


get an overkill pcm and have that table permanently written. there is not much benefit to shifting at higher rpm without a tune anyway.


Higher rpm on stock valvetrain is pointless above 5700 rpm... The stock springs are basically pointless above this shift point unless you have ls7 springs or higher depending on mods.

The performance shift changes more than shift points... It changes how fast your trans tries to shift and when to shift at what speed... all 3800 vehicles be it grandprix or impala have the tables already in them. They just copy paste the same properties into the performance that are in the normal tables so nothing changes and it's basically disabled... picture below from my 01 impala showing this



hey fastrunner08 I know someone on here I met at one of the Cincinnati meets has it installed in his Impala... There is a pinout you'd have to wire a switch to on the back of your pcm. Flick switch on and you'd have performance mode. You would simply have to change the performance tables to what you'd want the vehicle to do inside the Tuner (guessing you still have yours)

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2006 Impala LTZ 105k- Dynomax Catback Exhaust, Overkilled by Will Wink

2001 Chevy Impala- 186K Retired: 180 T stat, HV3, Wizaired Intake, GMPP Exhaust, Speed Daddy Headers, 1.9 Yella Terra Rockers, Custom LED interior, BBEngineering.com 6 Pod Cluster, Poly Mounts and Bushings, Dyno Tuned by Dyno Brian @ Dyno Tune Motorsports 181 WHP 230 WTQ
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The_maniac
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PostPosted: Thu Mar 14, 2013 11:00 pm    Post subject:   Reply with quote

I believe this link is what the OP might be looking for:

http://www.grandprix.net/forum.....ber=122515
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Wingman520
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PostPosted: Fri Mar 15, 2013 12:07 am    Post subject:   Reply with quote

The_maniac wrote:
I believe this link is what the OP might be looking for:

http://www.grandprix.net/forum.....ber=122515


That'd be it

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2006 Impala LTZ 105k- Dynomax Catback Exhaust, Overkilled by Will Wink

2001 Chevy Impala- 186K Retired: 180 T stat, HV3, Wizaired Intake, GMPP Exhaust, Speed Daddy Headers, 1.9 Yella Terra Rockers, Custom LED interior, BBEngineering.com 6 Pod Cluster, Poly Mounts and Bushings, Dyno Tuned by Dyno Brian @ Dyno Tune Motorsports 181 WHP 230 WTQ
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