We have a KA24DET with forged pistons and a Garrett GT25 turbo rated at 400hp, upgrade injectors and fuel system. In the other corner with a a Sr20det, nothing done to it, factory T25G turbo rated at around 220hp -240hp? Factory motor transplanted into a 240sx. Both cars have 3" exhausts and front mount intercoolers. Doesn't take much intelligence realise the KA24DET powered 240sx would toast the Sr20det.
Now lets compare a 240sx with a Sr20det with forged pistons, Garrett GT30 turbo rated at 550hp, aftermarket injectors and boost set to 20psi. The Sr20 powered car would toast the KA24DET power 240sx.
In other words, who ever motor had the most work, runs the most boost and has the bigger turbo installed. Will win!!!
So please, install a T2 on a KA24det and see how quick it goes?
In addition to that, the T25G turbo on the Sr20det runs out of puff at 15psi @5000rpm. Now, why does the t25g run out of puff at 5,000rpm @ 15psi on a sr20det?