Because simply increasing line pressure is a good way to shorten the life of the transmission. All they do is increase line pressure, which can prematurely blow out seals in the transmission.

 

So Gm from the factory put a program in the PCM that will blow the seals on the tranny if anyone pushes the button??? This is just using the factory program that is built into the PCM. Firebirds had it and Camaros didn't, but they are the same transmissions. I can't see GM intentionally shortening the transmission life of just the Firebird and incurring more warranty costs. Or is there a warning in the Firebird somewhere that says "DON'T PUSH THE BUTTON" Kind of like "Don't go into the light!!"
Brad

 

That is what I am thinking, thanks for the info.

 

If you do both, you might get shifts that are to firm at light throttle openings (not good), that's about it. If the pressure regulator valve is set for 175 psi, for example, then nothing you can do electronically will raise line pressure higher, it is physically impossible. I would rather change firm shiftness by working with the accumulators, boost valves, and valve body plate hole sizes.

 

i got my tranny rebuild for $1200 plus $100 for transgo shiftkit, he didnt get me the full kit...damn it

 

Best way it to use a trans go kit........don't bother with the line pressure--eventually the seals will go--unless you only raise it a little--then your not going to get as hard as shifts as with a trans go kit.

Chirped my nittos the other day from 1-2 that's with a 2.73 gear

 

what do you mean you didn't get the whole kit?? Mine cost 100bucks or do you mean he didn't install all of the parts

 

It's been awhile since I've seen a post to the top of the forum that's over a year old.

 

Yup i brought it back from the dead........lol

 

I noticed a healthy shift imporvement with a Hypertech Power programmer on my 96Z. It's the easiest way to improve shifts. (albeit quite expensive) but it helps power too.

 

I just thought I would throw this out here. I bought the b&m shift plus and it did make the shifts alot firmer . I set mine with the setting on 1 , 2 was to harsh for normal driving . I left it on for a while untill I was told that it could ruin your tranny. So I took it out . About 6 mths later and my tranny is slipping like crazy when shifting from 1st to 2nd. So I would have to say that NO ONE SHOULD BY THIS PRODUCT. I was originaly going to get the shift kit from transgo but the guy at auto zone suggested this shift plus instead. looks like the $40 I spent will end up costing me close to $1,700 for new probuilt 4l60E. They are Crap do not raise your line pressure

 

TRANS GO!!!!!

 

qoute-> "another free mod is to turn up your force motor 1/4 of a turn.you must remove the pan and use a torx screwdriver"

AHHHHHHHHHHHH thats what i was looking for when i posted my thread...im slowly getting there...now where the hell is the pressure control solenoid inside a 3800 series II :-/ .......

 

i was told that there is no CONCRETE EVIDENCE that turning up the pressure can(will) cause premature seals to go bad. It may but it is not PROVEN

 

ttt