Originally Posted by
BRAMMER
Not sure the GT has the legs the T4 has. 2 cars off here M.A.D mapped had this blower and made 500 & 501 but i don't know what boost but both were running Autronic
I never had the rods peened as i didn't think i would be entering that level of power but my complete internals were balanced and a few other things as i don't see it making much more than 500 if it gets there - time will tell
As for C/R - i'm no mapper and only pick up little bit's i read on here and i'm sure i read somewhere that higher comp requires more ignition in the map making things hotter -
please if i'm wrong or have the wrong end of the stick correct me 
Contrary to above I always thought the opposite, I would think lower compression would allow you to add more ignition not less as you stand less chance of det, just like you this is what I have picked up, it would be good if someone who knows could confirm out of interest?
From what I understand, it used to be the done thing, everyone dropped compression which meant driveabilty suffered, but nowadays perhaps it with advances in mapping since the early days, this thankfully is why it isn't done on your averege spec car now?
Martin