Is this a good time?

[BoostN IT]

I think it maybe over advanced. That would also cause a slower time.

Here is a video comparing E85 timing VS gas. He did drag it out to 10 min but it is informative, also I wish I had a dyno like his.

So you think my car is seeing too much timing?

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[BoostN IT]

I think it maybe over advanced. That would also cause a slower time.

Here is a video comparing E85 timing VS gas. He did drag it out to 10 min but it is informative, also I wish I had a dyno like his.

I am working on getting a couple of my runs from video uploaded to youtube. I will share when I do that, could possibly help.

 

[engineermike]

I would expect mbt to be lower on e85 than gasoline even though the octane rating is higher. It’s a purer substance with less slow-burning heavy chains.

If I were running e85, I would probably lower the mbt tables by 2 deg and change all the borderline tables to all 55.

Fwiw the flex fuel f-150 calibration adds to the borderline spark and takes away from mbt across the board.

 

[K4fxd]

So you think my car is seeing too much timing?

That thought is in my head. Be nice to see another tuners e85 log

 

[BoostN IT]

I would expect mbt to be lower on e85 than gasoline even though the octane rating is higher. It’s a purer substance with less slow-burning heavy chains.

If I were running e85, I would probably lower the mbt tables by 2 deg and change all the borderline tables to all 55.

Fwiw the flex fuel f-150 calibration adds to the borderline spark and takes away from mbt across the board.

This was the E85r tune by the way

 

[BoostN IT]

So I am back to base 1 on why I am not seeing an 11. Maybe I am not a good driver or maybe I need a 18 ported manifold? I got this back just now from PBD:

"honest the knock that im seeing is 1* in or less in most of the time and its so fast it wouldnt prevent any ET change

it would have to knock and stay knocking to keep the timing removed in order to really reduce the performance"

 

[K4fxd]

It is pulling timing at the top of each gear. I do question the amount of timing but I don't know for sure. They have the dyno and I'm sure they tested.

 

[BoostN IT]

It is pulling timing at the top of each gear. I do question the amount of timing but I don't know for sure. They have the dyno and I'm sure they tested.

I wonder if that is just how they have it tuned? I asked them if this is normal.

 

[K4fxd]

I wonder if that is just how they have it tuned?

Very possible, I had forgotten that back when MSD came out with the first programmable ignitions there was additional HP by retarding the timing at high revs.

 

[BoostN IT]

Very possible, I had forgotten that back when MSD came out with the first programmable ignitions there was additional HP by retarding the timing at high revs.

Ahhh that is good to know. I had never heard that before which is cool.

 

[engineermike]

The stock gen3 coyote definitely pulls timing back up top.

 

[Pierangiolo]

That seems a bit slow in my opinion considering you have a full bolt on car running e85.

Here is my 2020 10r80, 93 pump gas, 100% stock, full interior (I weigh 200 lbs) with 255 shitty pzeros. I ran a 12.6 at PBIR (miami), temperature was around 85-90 (kinda hot but its normal for us)

 

[BoostN IT]

That seems a bit slow in my opinion considering you have a full bolt on car running e85.

Here is my 2020 10r80, 93 pump gas, 100% stock, full interior (I weigh 200 lbs) with 255 shitty pzeros. I ran a 12.6 at PBIR (miami), temperature was around 85-90 (kinda hot but its normal for us)

Yeah those 10r80's are great for NA

 

[BoostN IT]

Very possible, I had forgotten that back when MSD came out with the first programmable ignitions there was additional HP by retarding the timing at high revs.

You think it is a good idea if I take my filter off my intake and see what it does? I have a junk paper cone filter

 

[K4fxd]

As long as your track is not dusty a run or two won't hurt anything.

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