Xist - Thanks for the amount of information you provided! From reading, it appears that cylinder deactivation and valve deletes are not the route to go. There are more and better gains to be had elsewhere.
Tygen - If I do lean out idle, it'll be just to get it down to a 14.7:1 AFR. I know that the ZX2 has an idle ratio of 13.5:1. What did you lean it out too? What problems did you encounter?
The IACV is a finicky thing on my motor. It will vary the GPH from 0.16 - 0.29 depending on conditions (all values are with the motor warmed up). If I can figure out how the computer sees the info from the valve, I am thinking a resistor could "trick" the computer to decreasing the amount of fuel injected when coasting around in neutral. Thoughts?
Also Tygen, I do use DFCO, but not immensely. It slows the car down too quickly in most circumstances... I have tried to DFCO down a 4-5% grade and the car lost speed! However, I have figured out how to keep it going down to 35 mph through downshifting
