So, I have read all I can read about how peeps have done the top swap on their GT's. On my end, I already have the GTP Supercharged, but am looking into converting to a GT motor with my top end. Reason being, well, my car has 216k on it, and I am gonna need new/rebuilt, or fairly used, so now is the time to decide.
Now, the GT peeps state to have the PCM tuned or leave it be, and allow it to adjust, if it can. My question is:
With me changing the motor, will I need to change the PCM to a GT? Will my GTP PCM auto adjust the timming, if need be, due to the difference in compression ratio?
The deciding factor is: Is it worth the work, for roughly only 5% more hp increase? If I decide to start to mod with smaller pulley, or better intercooler, will the higher compression ratio be a problem?
