Quote:
Originally Posted by TitaniumTT
if you tune your car with a tank of e85 that is actually 85% ethanol, then go out and beat on your car and tank up with 70% ethanol..... where's your margin or error there? The OEM's know about this, which is why they have a sensor that will alter the fuel and timing maps based on the amount of ethaonal content.
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What happens, and I have tested it. In winter you get less reid vapour pressure from E85 so they sell you E70. In terms of 'tune' the car is now running richer, so if you tune for 0.78 lambda in summer with E85, in winter you get ~0.7 lambda from E70 and you make more power in winter...
What is bad however is that your car idles and cruises like a bucket of shit until you adjust the mixture in the idle /0-3000rpm band.
05-18-2012, 05:49 AM
Hybrid Mode
