Difference in air intake's

[mtbr64]

i tried searching but couldn't find n e thing that answered all my questions

what is the difference between the intake for the 89 90 240
and the 91 93 240 intake/.?
i looked on the injen website and can't tell the difference.
also where does the aiv valve connect to the air intake? or do u not connect it?

[Rennen]

http://www.zilvia.net/f/showthread.php?s=&threadid=38231

-Matt