E-85 vs 91-93 for turbo
 

So just wondering guys, I am debating on the e-85 upgrade. Pros, cons, etc...Any links/articles to really understand the difference? E-85 is available here, so i can totally do it, but just want o make sure its the right decision.

If i can do E-85 is it just a no brainer? what is the science behind it. Is it only a turbo thing, or would all cars benefit from the e-85

Thanks for any input....

Most cars can do it with upgraded fuel components and a tune. Our cars do benefit quite a bit, especially on a turbo application. I know Fullblown's kit can make another 50+ whp with E85. Downside will be overall fuel milage will decrease. Some N/A guys running E85 are averaging around 17-22 mpg's.

What he said. Some people say that is can clog your fuel injectors, erode your fuel lines, and cause other fuel system related issues but subaru motors and our fuel system seem to be handling it just fine. The fuel mileage will suffer slightly but the biggest cause of fuel mileage loss is a lead foot haha.

There is really no issue with clogging ect our car use modern era injectors no issues here.

You can run e85. But you need upgrade your fuel pump, injectors. In some point, you will need a stronger engine internal.

You just don't want the car to sit too long with e85, especially when cold.

Only with force induction. You can run E85 in our cars N/A on stock fuel system.

Right.

But for N/A motor, the thing is we don't know E-85 will cause damage to stock fuel system or not, for example: fuel pump, fuel line.

Correct. However, many late model Subaru's have been running E85 on their stock fuel systems for years without any trouble. And I know some shops have checked out our fuel system and said it should be fine, but of course we don't have any documentation of that. But you are correct, only time will tell on the FA.

What about the the need to run colder spark plugs with E85? Is pre-ignition something to worry about when using E85? Just wondering if this is something that's come up for people who've switched to E85.

Nope. Stock plugs are pretty cold, so there has been no issues that I have ever seen with E85 or when boosted.

Only issue I had running E85 was cold starting, sometimes it took more than one crank to get the car running, not such a big deal for me - but should be noted.