it's not that they cant handle it, it's that it's a complicated engine and there isnt many mods made for it.
but that is slowly starting to change as companies are seeing that we are willing to buy them if they are worth while.
people also said celicas wouldnt ever see 13 seconds N/A but thats been done. they also say 12's will never be done and I fully expect to be exterminating that myth as well in the very near future
My teamate is also workin ona 500+ whp 2zz setup which has been said cant be done as well lol it just takes time and crazy people like us to proove it can be done.