2.7tt_s4

So I just bought an 2000 s4 tip. I my plans were to go to stage 2/stage2+ in the near future or over this winter. I want to be tuned to run e85 but cant seem to find someone offering a over the counter E85 performance tune. I heard VAST tuning makes an E85/93 tune but their web site doesnt work well. I have done my research on E85 fueling and know all the pro's and con's. Honestly, its soley for performance reasons. MPG and fuel economy dont really matter to me.

Im new btw names curtis

jamesdmanley

i wouldnt mind seeing one of these myself.

Flyboy

I doubt you're going to find a tune you can simply purchase. That could be done with gasoline K03 tunes since the injectors remained stock so the tune didn't need to change for different size injectors. Since you're going to want to up-size the fuel injectors you're going to need a tune designed for that larger injector. But then most people who bother installing larger injectors have done it in conjunction with larger turbo's, so it's a different tune altogether.

There's a growing number of places that can remotely tune the ECU, though sticking with a place that has done E85 at the K04 level would probably be smart.

I won't recommend VAST because they're dishonest, but EPL is another option to consider and there's a couple smaller name places now operating.