E85 Tune

[Charged]

i want to run 98 & E85 what do i need and how much would this cost to run two tunes.
I just want to press a button and fill up on E85

 

[07GTS]

all u need is the flex sensor (if u dont have one) and enable it and get tuner to fill in the flex areas and ur good to go on one tune

 

[abuch47]

all u need is the flex sensor (if u dont have one) and enable it and get tuner to fill in the flex areas and ur good to go on one tune

Pcm flash and sensor for ls3?

Any idea what stock fuel setup is rated for. Ie are the injectors and pump high flow enough for e85?

 

[07GTS]

Pcm flash and sensor for ls3?

Any idea what stock fuel setup is rated for. Ie are the injectors and pump high flow enough for e85?

yep should be just fit sensor and wire in to ecu then enable flex tables and populate, not sure on the ratings but i think the factory flex did have bigger injectors and maby pump, see what your WOT injectors duty cycle is now and add 34% to it and see if ur about 80% total or less ur safe, also good to make sure ur injectors like ethanol as some dont

 

[Banjo79]

I've just had my NA L77 re-tuned for 98 and optimized for E85. It had a noticeable difference in power pre-tune on E85, but now it's even better. Car feels 150kg lighter (in a straight line).
Can't be sure about pump and injectors. Pump did increase for L77, but did they keep it for LS3, not sure. Injectors are a different part number. They probably flow the same though.
OP, sorry I can't help, other than to encourage you to do the mod. IMO, even if you did need a new pump and or injectors, it's a pretty cheap mod in the grand scheme of things.
On a side note, my temperamental (when on E85) fuel pump/sender finally needs replacing as its now throwing codes and affecting the idle big time. Not the first time my mech has done an L77 fuel pump for an E85 customer. I doubt I'll be replacing it with genuine.

 

[abuch47]

A sea captain once told me that the L77 and possibly L76 have the zl1 pump which is rated for fair bit of flow.