question about G8 ecm e38 2nd gen

[goodwrenchdave]

Since there are a lot of knowledgeable members here, I'll ask.

Is the 2008 G8gt ECM and 2009.5 G8gt the same part#?

reason asking is because tired of the 63lb/h flow limit- complicates things with double half-half - want the 127 limit
If they are the same - can I factory program ecm,tcm to a 2009.5 vin and then with my existing HP licence to these modules change vin back in them?

If ECM are not the same part.... will the 2009.5 ecm work on a 2008 (when programmed with a 2009.5 software Dealer OEM programing)

and if yes, will (buying a hp licence) can I change the false 2009.5 vin back to my original vin. and tune- I realize i will also update the TCM software- but I believe the TCM are the same part
I have access to OEM programing etc- so OEM programming, setup is really not an issue.

[blindsquirrel]

https://www.rockauto.com/en/catalog/...computer),2896

[goodwrenchdave]

thanks for quick reply!.....

well that suc. they do seem the same!
I think i have one ecm(2009) lying around at work-it was good years ago.....but now had dtc-internal memory error when I programed to 2008 g8 software... (however it started and ran!)
gonna try to flash it 2009.5 for fun, I also noticed that hptuners wouldn't allow me to change 2009 vin to 2008 even by changing 10th unless i changed an actual digit in serial identifier sequence (checksum error)...I'm stubborn!.... gonna try a few things for fun. I'll update if its fruitful
... I dont really care what VIN i run- as long as it plays friendly with BCM!

[blindsquirrel]

2008 and early 2009 are the same Service Number, late 2009 is different. Is that when they also changed from the 63lb injector limit to 127lb?