1999 to 1998 GTP PCM Swap

[JesseSmash]

I swear that there was a thread on this already but I cannot find it for the life of me.

Anyway, my friend gave me a tuned 1999 GTP PCM and I want to know if it'll work (properly) in my 98 GTP. Some tuning sites list 98 and 99 PCM's together, but I swear I read somewhere that they have different MAF sensors or something along those lines.

Thoughts?

[tomtom123]

I have heard multiple times that it usually goes 97-98, 99-00, 01-02, 03. But that is what I have heard for other parts, it might not apply to PCM's

[mguzzo]

you will be OK.
PCM compatibility is grouped as 1997, 99-02, 2003

1997 has a separate KR module
the 2003 PCM has some changes in preparation for transmission controls for later features

[JesseSmash]

you will be OK.
PCM compatibility is grouped as 1997, 99-02, 2003

1997 has a separate KR module
the 2003 PCM has some changes in preparation for transmission controls for later features

Alright. Are you 100% sure on this?

[monte0]

I've done a 1999 file on a 2001 car before, so should work. Like said 97 is by it self.

[GMR Badass]

98 is also different.....97-98 Maf tables are different than 99+

[RivMan]

Yup, you can use 99 PCM hardware, but you should have it flashed with a 98 calibration file.

-Rob

[Overkill]

Correct, or at least a 98 MAF table, or swap a 99 throttle body on.