Flex Fuel Tuning

[Hpindy]

Not needed from what I saw over 3+ years so far. If you don’t drive in winter, fill it with 93 and it’s good to go.

I use a bottle of royal purple injector cleaner every 2000-3000 or so, does it do anything? No idea, but it has a lot of PEA in it like 93 has. I just can’t stand the smell of catless 93

Good to know .thanks . So far have only run 5 gallons of E85 through my car lol .

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[FFBOS]

I have no plans to ever run 93 again as long as corn is available.

 

[Hpindy]

I have no plans to ever run 93 again as long as corn is available.

We dont have E85 readily available here . Only in cans from a race fuel supplier . Flex fuel is easier to deal with on a track by track basis for me .

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[FFBOS]

I run flex (not inferred), but use 93 if needed for travel. Haven’t used 93 since I went e85 though. A bunch was blended in when we tuned for flex though to get the adjustments right.

 

[Hpindy]

I run flex (not inferred), but use 93 if needed for travel. Haven’t used 93 since I went e85 though. A bunch was blended in when we tuned for flex though to get the adjustments right.

I wish we had E85 at the pumps up here . My car runs so smooth on it .
It's funny . I poured my X98 into a different jug that's easier to pour in my car and the X98 is crystal clear. The X85 has a yellow tinge to it . Must be the 15% gasoline in it . I'm going to drive till the gas light comes on then I will put 5 gallons of X98 and 5 gallons of X85 in then drive it the last 30 mins to the track to get it blended and the car adjusted. I will post pics later .

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[Speedy!]

It's the added timing I think that makes these cars drive so nice on ethanol. Mine felt the same way, much happier. I think these cars like timing, but just make too much boost to get it on pump gas.

 

[CatDaddyB5]

It's the added timing I think that makes these cars drive so nice on ethanol. Mine felt the same way, much happier. I think these cars like timing, but just make too much boost to get it on pump gas.

Pump gas and meth injection!


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[Speedy!]

Meth injection doesn't work very well on Hellcats. I run it on my old supercharged 2002 4Runner with much success though.

 

[CatDaddyB5]

Meth injection doesn't work very well on Hellcats. I run it on my old supercharged 2002 4Runner with much success though.

Why doesn’t it work well on Hellcats? It’s still a PD blower


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[coolblue]

It's the added timing I think that makes these cars drive so nice on ethanol. Mine felt the same way, much happier. I think these cars like timing, but just make too much boost to get it on pump gas.

Def true. I ran the max blend of Octanium Madditive (one can to 10 gals of gas ) as per @16GoManGoHC2 endorsement of this stuff in my car when I put a 3.17 Hellraiser pulley on to be safe. When I switched back to the stock pulley with the same tank of gas still left in the car, the car was definitely stronger than before with just the stock pulley. And that's just boost additive, not E85.

 

[16GoManGoHC2]

I've heard alot about that and one of two reasons I'd be hesitant to run the flex. I've heard this stuff clogs up injectors after awhile, even on a regularly run vehicle. I was told it has a "varnish" type quality to it while running through motor in addition to more contaminants. Also, the affinity for water (like all alcohol) is not good for storage. I was surprised to here you say you'd leave any in the tank over the winter.

I don’t plan on leaving E in the car over winter, it will be back on 93 with at least a half a tank of just about pure 93 with Octanium and a can BG44 fuel injector cleaner in a full tank of gas to sit and clean over the winter.

 

[16GoManGoHC2]

I went to the high station just before and stocked up on 83% E before this last station starts changing over to winter blend as well. Going back with 4 more new jugs over the weekend too lol. I need enough good stuff to last until at least mid November.

 

[16GoManGoHC2]

Def true. I ran the max blend of Octanium Madditive (one can to 10 gals of gas ) as per @16GoManGoHC2 endorsement of this stuff in my car when I put a 3.17 Hellraiser pulley on to be safe. When I switched back to the stock pulley with the same tank of gas still left in the car, the car was definitely stronger than before with just the stock pulley. And that's just boost additive, not E85.

1Qt of Octanium per 15-16 gallons is fine especially if you trust your 93 your getting and are only making 16 psi of max boost. I make 17.8-18 at times on a 2.85 and that mix runs with no knock ever and makes 855 wheel on a dyno jet.
Here’s a dyno chart with 93 and 14 degrees of timing and E78 with 19 degrees of timing and a tame timing ramp.

 

[Hpindy]

I ran may car down to the 2 line and put 5 gallons of X98 and 5 gallons of X85 . By my calculations I should have ended up with appropriately 74.5% ethonal in the tank . Here is where my car stabilized.

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[coolblue]

I ran may car down to the 2 line and put 5 gallons of X98 and 5 gallons of X85 . By my calculations I should have ended up with appropriately 74.5% ethonal in the tank . Here is where my car stabilized.

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Pretty damn close calculation.

 

[Hpindy]

Pretty damn close calculation.

I'm going to do an adaptive reset and see it it does it again .
I spent a lot of time dialing this in

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[Hpindy]

I just added more E98 and did a adaptive rest then went for a drive . My trims are spot on now and I ended up with this ...

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[coolblue]

I just added more E98 and did a adaptive rest then went for a drive . My trims are spot on now and I ended up with this ...

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Steroids. LOL. Start driving before weather goes sub-zero up there, you wont be able to start it without a block heater with that content!

 

[Hpindy]

Steroids. LOL. Start driving before weather goes sub-zero up there, you wont be able to start it without a block heater with that content!

Lol . This will all be gone by tomorrow. I'm at the track today and tomorrow and I have a 6 hour drive home . I will be back on 94 by tomorrow night .

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[Speedy!]

1Qt of Octanium per 15-16 gallons is fine especially if you trust your 93 your getting and are only making 16 psi of max boost. I make 17.8-18 at times on a 2.85 and that mix runs with no knock ever and makes 855 wheel on a dyno jet.
Here’s a dyno chart with 93 and 14 degrees of timing and E78 with 19 degrees of timing and a tame timing ramp.
View attachment 27666

It looks like the graphs don't match the numbers on the sheet there? Kinda odd if I'm seeing it right. Stops at 760 and 840?