Quote:
Originally Posted by Kodename47
The ECU will show 14.7 at stoich for any fuel, so when it reads 14.7 you are at stoich for your fuel. The AFR reading is derived from the O2 sensor scale but the sensor works in lambda, lambda 1 is stoich and the sensor scale means that it shows 14.7. All you're doing is making it a percentage richer than that. I'm also not sure why you're doing what you're doing, all you're doing is reducing economy....
The real "workaround" for this would be to change your O2 scale, however the ECU will try and target 14.7 so you'll actually make it run leaner  |
Although I have no doubt you are correct, I sometimes doubt my understanding, so I thought a comparison would prove your point. I brought up the same tables in OFT OTS 91 Oct and E85 tunes. They are identical up to .5 load, then they branch off from there. Stoich is radically different for both fuels, yet they are identical. This proves your point, yet shows a different principle at work too. Above .5 and .6 load, there is a compensation applied that is unique to the fuel being used. The question now is, how to compensate for E10 above these loads to get the best economy and power.