Friend of mine just put one on his LLY and used the same tune he was using before the wheel change. Says his truck spools instantly but the charger is also making 42#s of boost now. Really does not sound like a good way to keep the charger alive for long.
My question would be if you back the tuning down so that you are only making safe boost again like 30-36#s are you really gaining anything. He said he also dropped EGT's by about 200* F. I would switch just for that alone running 40" tires my EGT's climb fast
Are you sure that your friend has like 42# of boost just from the batmowheel?