E85 Tune

[boosted_XR]

sounds good 2 me

[Vevapower]

I hope Shell gets on the E85 band wagon!

Go the Shell card!

Would be nice for work to help me chase more power!

Edited 05/10/10 04:41 AM by Vevapower

[xr6t_ute]

Sweet, what are your cold starts like Chris?

I supose its to early to ask if theres any dramas with rust/internal components

E85 has very good cleaning properties, it cleans the fuel system,injectors, the combustion chambers,valves and exhaust will be clean as a whistle.

Not to mention about 104-105 octane.

[RAP1D]

would running a surge tank with 1 044 pump and bigger injectors be enough 2 run roughly 450wkw? cause ive been wanting 2 run e85 for a long time now but just getting bits and pieces.

Nah not enough fuel support mate, mine ran lean on one 044 & 80lb dekas, it made 450ish but was 13.5 AFR.

For 450wkws, 80lb injectors and two 044s works well on mine, a good alternative to twin pumps is a larger single 1000hp pump, such as Aeromotive A1000, not cheap but easier to plumb up if you have an existing surge tank system.

I wouldnt like to go more than 380wkw on a single 044 for e85, you need good headroom with a fuel system at this level.

[Panda Eyes]

I have my e85 in jerry cans. they each hold 21L. so I put a jerry cans worth in and add 21L of 98 or 100 in at the same time.

if I run only e85, it misses under load like it used to without a surge tank, so my dekas cant supply enough e85 that the motor wants.....

[qikin71]

Although I havn't driven the car lately, as interstate, I have used 2 tanks of the Caltex E70 - E85.

Car runs well and cold starts are no problem. The original tune is for E85. Tuner says E70 shouldn't be a problem and have had none.

If your in southern subs of Melb, the Caltex that has E85 at the moment is on Sprinvale Rd on LHS after train tracks if coming from frankston way.

Edited 05/10/10 11:07 AM by qikin71

[icer]

I think a single pump is good for about 420rwkw. any more and a 2nd or bigger is required. im getting close to maxing mine now and I dont have e85 tune yet...

[ratter]

The detergent affect of E85 can cause some initial problems on cars that have allready been used for a period ie all our cars

It will clog up fuel filters and cause the car to lean out.

It is recommend that fuel filters get replaced pretty frequently for a while after changing to E85 useage

having E85 sitting around is not a great idea unless it is stored 100% air free as phase seperation can happen with any moisture entry with air.

The moisture in the air will condense in the tank/container. The heavier water molecules will fall to the bottom of the tank but at the same time attract ethanol molecules and remove them from the fuel, this will result in a corrosive layer of water and ethanol at the bottom of the tank/container and most engines will not run on this mixture if it happens in the tank of your car, simply draining (if possible) this mixture may cause other issues as the octane rating of the fuel will not be lower and may cause detonation problem in our engines.

E85 may not be consistant in it's octane rating either, not a great thing if we are pushing things to the max in the pursuit of more power, if we tune with a tank at a high octane and then the next tank fill is lower octane, we may end up with detonation issues. This will also be more likely for those that are mixing it themselves.

Some cars in europe are now E85 ready, but they get around issues by having heated injectors to help starting issues, they have fuel systems to cope with the corrosive affect of the fuel and the biggest thing the have is they use a flex fuel sensor to actually measure the ethanol content of the fuel being used and the ecu adjust the fuel and spark as required based on the ethanol content at the time.

[icer]

bang on mick. exactly my point on the bio flex e85 caltex. cant tune it to 85 then get a bad batch of 70!

[RAP1D]

The new commodores out now have some sort of sensoring to tell them what rating the fuel is, and adjust to suit target AFRs, pretty good feature.

Until it becomes more reliable and we can say, yes its going to be the same spec all the time, most folk will have to stick with 98.

I wouldnt use it unless you have a wideband permanently set up, know what your looking at, and have a solid understanding of what happens if it hits 14:1 on 4psi at 70% load LOL

It is the future though, no denying that

One thing Ive found is timing at WOT, even when you go past the point of making more power, it still wont ping... 24deg anyone LOL