Do u need dif cam to run e47.5?

 

Nope you well need cams for full e.

 

Am I able to have my normal drive tune n a e47.5 tune so I don't have to run e gas all the time?

 

If you want to switch back to 93 or 91 you well have to run the tank dry and fill up with 93 then load the tune for 93. Then car well run like carp for little bit and it well be back to normal.

 

You can't switch tunes if you run e47. You well have to run e47 with a e47 tune or 93 with a 93 tune.

 

So since i use it as a dd should just do 93? And do u guys race in d or I on the autos n what's the difference?

 

I DD with E50. If I go where I think I may not have Ethanol available, I take my laptop. I can always fill all gas on top of half a tank of E50 and flash an E25 tune if necessary.

 

Wat kind of gas milage u get with 50?

 

Not good, but the cost is cheaper. The only real advantage at current prices is the advanced timing you can run for more power. If you don't drive it like you stole it (me) it might be a wash in cost vs gas only. Last fill I got gas at $4.21/gal and E85 at $3.49/gal which gives me E47.5 (yeah, I call it E50) at $3.85/gal. I seem to be averaging 22mpg with it.

 

93 is 3.99 n e85 is 2.99 n i avg 21 with 93 guess I drive the ss a little to hard lol might look for a tuner n see bout doing it