[Joe_E]

Hey guys, my car is fbo now and I'm only on map1. I want to see if its okay to mix e85 with 91 to get the equivalent of 93 to test map 2. My car is ewg, how many gallons of 91/e85 do I need? And is this ok for the car to do?

[Jchn]

Originally Posted by Joe_E

Hey guys, my car is fbo now and I'm only on map1. I want to see if its okay to mix e85 with 91 to get the equivalent of 93 to test map 2. My car is ewg, how many gallons of 91/e85 do I need? And is this ok for the car to do?

Interested in this as well.
Subscribed

[Mike@N54Tuning.com]

Originally Posted by Joe_E

Hey guys, my car is fbo now and I'm only on map1. I want to see if its okay to mix e85 with 91 to get the equivalent of 93 to test map 2. My car is ewg, how many gallons of 91/e85 do I need? And is this ok for the car to do?

JB4 E85 Use

If equipped with the FlexFuel add on connector E85 mixtures may be used with pneumatic wastegate x28i models and the x20i electronic wastegate models. E85 is NOT supported for the electronic wastegate x28i model. When using E85 a mixture of no more than 40% is suggested.

Mike

[smallba]

Originally Posted by RSXDC5

Hopefully I can answer your question a bit...my car is completely stock with the exception of the JB4 Stage2. I have tried Map1/Map2/Map7...

To get to the desired 100oct to run Map7, I mixed my 91oct with 45-50% E85 (~105oct) as recommended. I can't speak for the N20 engine, but the N26 that I have will not successfully work with a 45-50% E85 mix while close to or at WOT. The engine hesitates, studders, and bogs down. To troubleshoot at the time, I switched to Map2 and then Map1, all Maps had the same problem. Once I filled up again, I blended my 91oct with enough E85 (roughly 15%) to get to 93oct so I could run Map2. Once I did this, all problems went away...this applies to Map1 as well. In the future, if I would like to run Map7 again, I'll have to fill up with 100% (traditional) 100oct.

About the closes answer i could get to your question from an old post. As Mike qouted from Terry @ BMS above watch your mix. I use a Alternative Fuel app and go with 30% e85 blend with 93 on my n20 which is around 97 octane.

[Joe_E]

Originally Posted by smallba

About the closes answer i could get to your question from an old post. As Mike qouted from Terry @ BMS above watch your mix. I use a Alternative Fuel app and go with 30% e85 blend with 93 on my n20 which is around 97 octane.

On what wastegate?

[smallba]

Originally Posted by Joe_E

On what wastegate?

My wastegate is a EWG

[Mike@N54Tuning.com]

Originally Posted by smallba

My wastegate is a EWG

E85 is NOT supported for the electronic wastegate x28i model.

Mike

[smallba]

Originally Posted by Mike@N54Tuning.com

E85 is NOT supported for the electronic wastegate x28i model.

Mike

This is true also, proceed at your own risk. I had my logs reviewed to make sure everything was looking good.