Bought the Autoenginuity scantool with support for the Nissan Expansions.

Follow the link below for my notes on the 5thgen forum. Was able to advance timing 2 degrees, increase RPM by 50 (max of 250), change values in BMC for lights delays, etc, etc. Very professional. You can download both user guides to find out exactly what the tools can do ( http://www.autoenginuity.com/downloads.shtml ). You can change some values temporarily to test the effect on the engine. Real neat.

Got the tool on Ebay auction by Autoenginuity for $202. Got the Nissan Expansion from their website for $99 (no software, just authorization code).

No engine knock with the change. I suspect the Sonoco 10% Ethanol content helps. But the 10% Ethanol content is a 4-6 WHP loss. I haven't used the Speedtracer (dyno, acceleration, deceleration, MPG) much but it seems to work fine. Will be better than butt dyno.

http://forums.maxima.org/5th-generat...78#post4386878