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This is just a genral tuning question about e85 that I have heard. My racecar is currently carb but would like to go efi eventually anyways. It has nitrous and I have heard you can not spray alot with nitrous and e85 because you are mixing two colds. I have not found any solid answer. But my gut says this is wrong because e85 seems to have a larger window before you run into knock. Any thoughts?
I haven't specifically tuned on E85 with nitrous but I can't see any valid reason why this would be problematic. A quick search on Yellow Bullet shows many people successfully using nitrous on E85 and E100 - http://www.yellowbullet.com/forum/showthread.php?t=378135
The only aspect to be aware of is if you are using a wet kit, the fuel jet calibration will need to be altered to cope with the higher fuel flow required on ethanol based fuels.
As Andre said, u just need to run a bigger fuel jet with a wet kit to make up for the loss of fuel percentage.
As an example tuning a friends 12:1 6.8lt gen4 motor it makes around 480rwhp n/a on pump 98 octane so it runs a 41 fuel nozzle and 88 for nitrous (250shot). on e85 we run between 44-46 for the fuel.