Quote Originally Posted by 00 blk G20t View Post
since all the "vtac" talk is going on.....heres a few facts from the nissan NEO VVL wiki.

NEO VVL:This engine was used by Nissan from 1997 to 2001
One difference from Honda's VTEC system is that NEO VVL engages the change of intake and exhaust cams independently for a flatter, more consistent power band. On the SR20VE, the intake camshaft is switched at 5000 rpm, and the exhaust at 6500 rpm. However this trait was not included on the newer '20V' version, as both camshafts engage at the same RPM.
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so nissan had its own version of "i-vtec" before honda did in 2001.
Why don't you try stepping it back even further to 1987 when Nissan introduced the N-VCT aka N-VCS

http://en.wikipedia.org/wiki/N-VCT