Winter blend gas and E/85

The way I log right now I use the x4 to record the data then upload to my laptop.. But I have a feeling that's not what you mean by "use a laptop"


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f8tlSHO said:
The way I log right now I use the x4 to record the data then upload to my laptop.. But I have a feeling that's not what you mean by "use a laptop"


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Correct, I log with the handheld plugged into the obd port and my laptop running live link.
 
f8tlSHO said:
What pressure is the limit for safe operation?


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I'm tuned at E20 and I never see less than 2k on the rail.

Torrie says 1k is the lowest he is comfortable with. There is debate about this but I ran some pretty steep blends on my 2013 with those pressures and the car always held AFR.

I dont think you will have any kind of an issue with a couple of gallons.

 
FoMoCoSHO said:
f8tlSHO said:
What pressure is the limit for safe operation?


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Click to expand...
I'm tuned at E20 and I never see less than 2k on the rail.

Torrie says 1k is the lowest he is comfortable with. There is debate about this but I ran some pretty steep blends on my 2013 with those pressures and the car always held AFR.

I dont think you will have any kind of an issue with a couple of gallons.
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Do you live in an area with a cold climate? He was saying that I need to keep an eye on it because of the lower temps in the winter. How aggressive is your tune?


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On the 2013 I had an aggressive e30 tune and we will just say I was playing fast and loose with my blend coupled with a zero degree day which caused a couple hiccups. Blending down to E25 fixed the issue.

I like my current E20 tune on the 2015 better. Its just as quick with no knock and lots of fuel pressure. Im pretty sure there is quite a bit of power on the table still.Personally I dont want to use any more e than is necessary to suppress knock and cool the cylinders. Straight gas has more energy available. Blending gives us the best of both worlds imho.

I dont think you will have any problems at all at E 20, regardless of temp....that being said I would certainly verify just to be on the safe side.

I am curious to see your logs when you get them.
 
FoMoCoSHO said:
On the 2013 I had an aggressive e30 tune and we will just say I was playing fast and loose with my blend coupled with a zero degree day which caused a couple hiccups. Blending down to E25 fixed the issue.

I like my current E20 tune on the 2015 better. Its just as quick with no knock and lots of fuel pressure. Im pretty sure there is quite a bit of power on the table still.Personally I dont want to use any more e than is necessary to suppress knock and cool the cylinders. Straight gas has more energy available. Blending gives us the best of both worlds imho.

I dont think you will have any problems at all at E 20, regardless of temp....that being said I would certainly verify just to be on the safe side.

I am curious to see your logs when you get them.
Click to expand...
this makes me feel better about the whole thing, thanks for the post. I should be putting some corn in the car tomorrow


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i really am having trouble trying to decipher these logs on live link,the numbers that are being reported for fuel pressure on the log do not match. can someone explain if there is a way to display these numbers in psi instead of mpa? ok edit, i just did the conversion,my max came out to 2500psi and min was 172 psi.. really? somthing does not sound right there
 
f8tlSHO said:
i really am having trouble trying to decipher these logs on live link,the numbers that are being reported for fuel pressure on the log do not match. can someone explain if there is a way to display these numbers in psi instead of mpa? ok edit, i just did the conversion,my max came out to 2500psi and min was 172 psi.. really? somthing does not sound right there
Click to expand...
When you build the config file arrow over to units, many have a drop down box to change them.

Numbers look normal to me.
 
How do I tell if the pressure is too low? Like I said it went from 172 as a min, to 2500 max.. I was told to try to keep it above 1000psi


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172 was most likely at idle, 2500 at wot. I will look at the logs in a little bit when I'm at my laptop. The 2500 max is a good indicator that all is well.

 
I don't know why but I didn't realize it was an excel file, that will make it easier to decipher


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FoMoCoSHO said:
And let me clarify, that 1k psi is for WOT.
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Ok torrie just emailed me back and said that the fuel pressure was not logged correctly there so I cannot see what it actually is... Not sure what that means...😕


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f8tlSHO said:
FoMoCoSHO said:
And let me clarify, that 1k psi is for WOT.
Click to expand...
Ok torrie just emailed me back and said that the fuel pressure was not logged correctly there so I cannot see what it actually is... Not sure what that means...😕


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i think he like to see fuel rear pressure.
 
f8tlSHO said:
I don't know why but I didn't realize it was an excel file, that will make it easier to decipher


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Logs are much easier to read via the graphs/gauges in livelink.
 
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