well it also depends on wat turbo youre runnin at 5 psi. but yea, a 2.2 at 5 psi is better then nothin. as slow as they are, a boost is better then no boost
for my gt28....i cut my old t3 flange and had a t25 flange welded on...it was cast steel so nobody wanted to weld on it so i had to go to a specialist and it cost me $80 and and hour for him to finish...best welding ive ever seen