im using a t3 hot 0.48 with a t4 0.60 cold
you need a bigger cooler and would need to add more fuel
a bit laggy but hold on when she passes 0.5 @ 3k and makes 1.5 bar @ 5.5k.I have seen 2 bar on my guage on the 1 km sprint

i found it a lot less painful to drive at the strip as it doesnt spin from the onset of boost like with my t3 0.48 hot with t3 0.42 cold