I do feel very fortunate that the ethanol content is 90%. Overkill built an ethanol content that ends up costing like 250 does your friend use an auxiliary input to data log it on the hp tuner? I have the ethanol content kit and was going to install it on my 2008 GXP, just haven't got to it, but it would be interesting to have it on my 2001, would make it convenient to see what the ethanol content is without having to test it.