swoop1o

iTrader: (4)

Im curious I have a few years already unlocked on my Hp tuners unit 98,2000,2002. I was wondering if the car is a 99 could I simply flash a stock 2000 tune to that pcm. I know this is a long shot but what the heck i'll buy more credits if I can't lol.

wait4me

iTrader: (10)

Any ls computer from 1999-2002 can hold any of those files between each other. For example a 2002 Silverado file can go into 1999 trans am and vise versa.

1997-1998 are their own computer and are not compatible with the 99 up.

swoop1o

iTrader: (4)

ok cool, because i've tuned quite a few cars and it just dawned upon me I wonder if I could do that so i'll give it a shot thanks.

swoop1o

iTrader: (4)

ok I've tried to write over the 99 tune with my unlocked 2000 tune and it didnt work. Looks like i'll be ordering 2 more credits.

wait4me

iTrader: (10)

You would have to use another software or the gm sps to do that.

Sarg

iTrader: (6)

So are you saying that with HP Tuner you are not able to flash over the tune with a different year OS? What about from say a 1999 truck to a 1999 Z28 file?

MontecarloDrag

iTrader: (3)

Of course you can, but you need to spend credits to do it. Just don't mix 512 KB files/PCMs with 1024 KB ones.
LS1 PCMs are very forgiving. I have flashed every OS I wanted and never damaged one. I went from truck to camaro to corvette OS without problems.

Why do you want to use a 2000 os instead of a 99? They are the same, no advantages.
Use a 01-02 OS, it is better than 99-00

Sarg

iTrader: (6)

I personally have 2000 unlocked so I could tune a couple swaps that I am doing and friends are doing.

swoop1o

iTrader: (4)

I wanted to use a 2000 tune, because I have that year unlocked already but it didnt work it still tried to make me license the vehicle so I just went ahead and bought 2 more credits.