[Phoenix'97]

Originally Posted by oil pan 4

I ran a lean burn tune for cruising for 9 months. I had it running 18:1 at idle, 16:1 for cruise, 14:1 for mild acceleration and 13:1 flooring it, with a carburetor and aem wide band O2 meter. I was able to get 10 to 20% better fuel economy with no loss in power.
Where is the down side?

I will conduct more research but I will save this image for reference. If Toyota has found optimal A/F ratios for varying driving conditions and throttle positions, then it should be good enough to tune my LT1 for! Thank you all for your comments and helping to expand the possibilities with my motor!