Performance shift rant.

[Xtant12]

Ok so besides the last year car was in storage I drove her for 2 years solid after getting my mods and new computer. I always noticed the car didnt really shoot into first from a downshift like others. My normal shift from second gear was around 75 or 80. I reconnected the performance shift that I wired into my PCM like 3 years ago and finally used it. The car is totally different. It slams down into first gear and pulls like crazy. Also shifting from 2nd to 3rd is about 97. I remember people at meets saying once you get a new pcm its automatically programmed to do this.. I say HELL NO it is not, my car has never reacted this way and i can finally feel the throw back I was looking for. If you dont have the performance shift feature you missing out.. Just wanted to share my rant with everyone..
Thanks for reading..

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[Freebeer187]

Damn I do not have performance shift... The guy I picked up the pcm didnt enable perf. shift... Well I havent tryed to ground pin 21 but maby ill give it a shot

 

[Freebeer187]

dhp pcm's come with perf shift enabled?

 

[Xtant12]

I wired my DHP to a switch in the car from a pin I got from the dealer. It works and is worth the effort..

 

[Freebeer187]

I wired up pin 21 today. Performance shift is enabled

Dunno how I did it before. The car moves like it should now. Stays in a lower gear gear for longer. Faster shifts too.

:bigok:

 

[Freebeer187]

Bikrboy is going to be so jealous when he sees this!!

 

[bikrboy128]

 

[Freebeer187]

hehe

 

[DanJ]

Or you can just flash the performance shift points into the normal table.

 

[Freebeer187]

I dunno what the guy did when he tuned my car. There is for sure a difference though. I do not have a tuner either.

 

[MuffHugger]

I can't tell if I'm in performance shift or not because of my ICCU.

 

[Xtant12]

I dunno what the guy did when he tuned my car. There is for sure a difference though. I do not have a tuner either.

ITS true. When I got my new PCM it was factored in ( atleast I was told ) but the car never reacted like others I drove in. Since I ran the wire and connected it to spot 21 its all a difference between night and day. My car shifted into 3rd from 75 to 80. Saturday it shifted @ 97 3 times in a row at full throttle. Every car needs to have this..

 

[MadMike]

my car shifts into 3rd @ 101 according to my HUD :smile:

 

[Xtant12]

my car shifts into 3rd @ 101 according to my HUD :smile:

Thats way better then 80!!

 

[Smoke]

Dumb question.

Whats performance shift, and why do you have to splice pins in the PCM to activate it ?:smile:

 

[Freebeer187]

Performance shift is an option that GM used to put in GP (other cars possibly). It changes the RPM limit and allows faster up and down shifts. It also allows the car to stay in a lower gear for longer.

There is a little more to it though. Its basically a "sport" mode

Like ppl have said though, you can just basiclly copy and paste the settings for performance shift into the regular mode tables. Some canned tunes allow the user to get the full potential when the option is enabled.

 

[Freebeer187]

my car shifts into 3rd @ 101 according to my HUD :smile:

... You have your gears displayed in your heads up display?

 

[DanJ]

No but It's pretty easy to tell when the car shifts and count to 3.

 

[Freebeer187]

No but It's pretty easy to tell when the car shifts and count to 3.

Indeed. But how would the HUD help at knowing about the gears?

 

[02BlueGT]

Indeed. But how would the HUD help at knowing about the gears?

he was saying the MPH was per the HUD

 

[Freebeer187]

Now it makes sense

That's what I thought I just wanted to see if he modded his hud

 

[MuffHugger]

dumbass

 

[Freebeer187]

dumbass

:gtfo2:

 

[MuffHugger]

 

[Freebeer187]

:cuddle: