Go with E85????

E85 is always worth it in my opinion. Plenty of power to be had

the torque gains with no other adjustments is always worth it, then u can gain a little more with a tune, once u go ethanol u wont go back

E85 is great as long as your fuel system is capable of supply

is a stock fuel system able to handle the 85

Rich 16 said:

is a stock fuel system able to handle the 85

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Only to a certain point. The injectors need to be upgraded at minimum

Power gains rise as you add power, helps IAT's, MUCH cheaper than race gas, but with similar octane, about the same cost as 93 pump gas when you consider the mileage loss, all Pro's IMO. Since selling my Turbo Buicks years ago, I stopped adding meth and every car since has been flex fuel. Even my daily has a map for up to 30% E (Mercedes C43)

Bigjsn250 said:

Power gains rise as you add power, helps IAT's, MUCH cheaper than race gas, but with similar octane, about the same cost as 93 pump gas when you consider the mileage loss, all Pro's IMO. Since selling my Turbo Buicks years ago, I stopped adding meth and every car since has been flex fuel. Even my daily has a map for up to 30% E (Mercedes C43)

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So many of us on this forum previously owned Turbo Buicks. . .

Rubber Duck said:

So many of us on this forum previously owned Turbo Buicks. . .

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I never had a Buick but did have a Typhoon with a 4.3L

Lt1z said:

I never had a Buick but did have a Typhoon with a 4.3L

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You're the kind of guy who would have enjoyed the Buick Grand National. . .

I also owned a Typhoon.
I really enjoyed driving that car.

Since it was turbocharged (very snappy) and AWD, I had a lot of fun with first time passengers, who did not understand that when making a left turn, about half-way through the turn, you could mash the accelerator pedal.

Funny watching them (with their eyes so wide) attempt to grab something to hold onto..

I used to put dry in the A2W IC and run 100 octane but this was prob 25 years ago

Oh man, yesss! My dream garage would have both the cyclone and typhoon and of course grand national. Back in the day I was always amazed at the off line performance when going against those two.

Back to original question, flex fuel is simply great. Major improvement and is like crack. I can never bring myself to fill up with just 93 anymore. I'm limited to about E40 which ends up basically being half 93 and half pump e85. When it's cold, and I use that term loosely as I'm in FL, I go a like 1 or 2 more gallons of 93 than e85 to end up high E30s due to the pressure drop as I like to keep my injector pulse width around 5.8ms to 6.0 max on the initial hit.

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I used to own a built Mazdaspeed 6 that ran ethanol. I had to mix 50/50 with 93 and e85 with every tank and I still found it to be worth it. Seems like a no brainer for the V.