Post by
croustibat »
https://forums.nicoclub.com/croustibat-u125043.html
Sun Jun 28, 2009 1:32 pm
Please people, when you dont know DONT answer ...
750cc injectors are WAY enough, i know a 430+HP e85 CA18DET with these and they are far from being maxed ...
e85 does NOT allow you to run leaner ... you need to run a lot RICHER, stoich is around 9 for e85, where it is 14.7 for standard fuel, and you should aim for 6.5 when on full load. When you see an AFR of 12 using e85, you are in fact at "stoeich minus 2.7" . A wideband AFR sensor is linear and does not care about the fuel used; it measures lambda. Lambda is then multiplied by 14.7, so using e85, you will have the same kind of numbers as with standard fuel.
It does allow you to get rid of knock, and setting very agressive ignition timing, as it has 105 octane, it will cool the engine better as you inject more. The problem is, if you take advantage of what it allows, you risk overheating your engine without knowing it (you would get knock with standard fuel to tell you), so monitor your EGT.
Simply put, a turbo engine tuned to use e85 (with bigger injectors and fuel pump) can pump 10 to 20% more HP, without upping the boost. And it DOES allow to up the boost, too