^^this is how i know, i have also driven a car with a t25 set up. it will work and boost fine, its just at high rpms(4500-5000) it cant flow enough and the power will drop off significantly. lots of people do it tho(with an sr20 t25), so search around here and decide if its right for you480sx wrote:A t25 is to small too. They choke the Ka's pretty bad at high rpms, its like your N/A at WOT past 5000 rpms.