recently it's cold here like 25 deg, my car have problem starting in the morning with full tank of e85. So i decided to put regular unleaded 93 pump gas in it, about 10 gal. I thought the car would drive like crap with 93oct., but it actually drive fine, and smooth. The only different i noticed is when under throttle, the wideband ratio drop to 10.0 compared with 12.0 w/ e85 and boost spool up is a little slower. 10.0 ratio means the car run a little richer i think. Hope this give every one a head up

 

if you advanced the timing you better watch the knock!!

do you have knock cel?

 

i dont have a knock cel And yes, we advanced the timing to like 18 degree. Well, its great to know that u can run regular pump gas (temporary) in case u ran out of e85 somewhere.

 

Tehpramod? Running too rich isn't good either.

 

Make sure your wideband just doesn't read below 10.0 (actually running richer) else you might be running seriously rich.

 

gotcha brother. The aem wideband wont read below 10.0. But my actual reading when i floor it, was like 10.3. I probably fill up with e85 after my tank get to half this week, just to be safe

 

the other reason i fill up with regular unleaded is that the e85 pump at the gas station that i went to, take very long to fill up. Especially in the morning, i think e85 frozed up or something. Do you guys have problem with e85 very slow fill up?

 

You are going WOT with pump gas on a E85 map?

Vented block.

btw, proper cold starting on E85 is possible with correct tuning.

Also your fuel trims will most likely go full negative and throw a CEL.

- Bryan

 

I can understand filling up with 93 or 91 on an e85 map if it is literally a must and you have no other choice, but with that being said I would never go into boost. Like GST mentioned above...that is a sure-fire way to blow your engine. Why would you go full boost on an e85 map with 93 anyways? Really?

 

THIS!

Why in the world would you drive the car in boost knowing that you put pump gas in. Sure you can get by limping around on pump gas - but you need to "limp" around and stay out of the throttle.

You should have a Tephra ROM and you can push a button and swap maps. It's too easy, get your tuner earning his money.

In summary, the heads-up is to you - not us. What you are doing is a BAD idea. Especially on a Red at 30 psi.

 

thanks guys. i'll try keeping my foot off the pedal until the tank near empty, and fill it up with e85.