PDA

View Full Version : E85 anyone?



Forced A4
04-13-2010, 07:17 PM
Has anyone ever gone E85 on there 1.8T?

A4Rob
04-13-2010, 08:12 PM
Search. gli_ryan has his A4 on e85

somebody5788
04-13-2010, 08:20 PM
Do et! I think e85 is like the best bang for the buck on any forced induction engine!

djwimbo
04-13-2010, 08:55 PM
I mixed about a 3:1 ratio of 93 oct and E85 when I would take it to the track. IIRC it made it up to like 104octane? or in all reality I just made it like an E30-ish fuel.

1NaudiA4
04-13-2010, 08:56 PM
I'm going to jump on the bandwagon this June once they have the summer blend at my local stations. Just an fyi E85 takes 30% more fuel so if your running a BAT and plan on maxing it out your going to need some serious fuel pump flow.

ForceFed
04-13-2010, 09:34 PM
so question. i have a inovative Lc1 wideband. and when i run a mix of e85/92 the A/F ratio is still good(actually alittle rich up top). so does this mean that iam fine? or do i need more fuel then what it seems the lc1 can read? what iam kinda asking does E85 still run the same as a regular 91-92 octane?(A/F ratio wise) or does it need to be way rich?

Forced A4
04-14-2010, 03:00 AM
I'm going to jump on the bandwagon this June once they have the summer blend at my local stations. Just an fyi E85 takes 30% more fuel so if your running a BAT and plan on maxing it out your going to need some serious fuel pump flow.

Yes I do know you need 30% more fuel, but I was also told you want to tune it on the winter blend because the winter blend will run a little more lean, so then your good all year long.

1NaudiA4
04-14-2010, 08:02 AM
so question. i have a inovative Lc1 wideband. and when i run a mix of e85/92 the A/F ratio is still good(actually alittle rich up top). so does this mean that iam fine? or do i need more fuel then what it seems the lc1 can read? what iam kinda asking does E85 still run the same as a regular 91-92 octane?(A/F ratio wise) or does it need to be way rich?

The LC1 is actually a pretty good wideband gauge (given its calibrated and has no gremlins), they have pretty good sampling rates. Best power and the least knock is found around 12.0 AFR on a gasoline scale when using E85, some tuners even like to go a bit leaner up to 12.5 AFR so I'm betting you have enough fuel if its telling you your rich but I bet your running really rich since your running E85 with out being mapped for it. Watch your knock.

Heres a good read that will answer a lot of questions from the Turbo Brick forum http://forums.turbobricks.com/showthread.php?t=73061

Forced A4; If it were me I would prefer to get a tune for each blend as you would end up running really rich if you were to run E85 when your mapped for E70 and E85+really rich=knock

ForceFed
04-14-2010, 04:56 PM
sweet thanks. helps a ton