I have a gmpp lsx454 with the typical bolt ons. Car made 540hp and 570tq at the wheels in a humid august day here in pa... I was told by the tuner if I come back in these cooler fall months I can expect 560-570 and 590-600ish... If you have any questions please feel free to pm me or see my build thread:
https://lateral-g.net/forums/show...hlight=lsx+454
Thanks Steven