Winter blend gas and E/85

SHOnUup said:
Thx Larry. 16-18% as I'm still in search for the supplier of the e/85. I guess now, have read differing opinions now, that some e/85 may take a "winter blend" mix hit also(regional mixes). 2 gallon per tank mix really makes it easy to figure out the required amount.

That high KR was what I could not deal with either. First thought my car was hurt before confirming the winter gas arrival. Whew!!!

Really hope the guys not monitoring knock out there see this info and adjust accordingly. 93 tune + winter blend + not fully warming up car = a considerable amount of knock I can assume pretty confidently.

Rich
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Can you elaborate on your suspected connection/rationale to the not fully warmed up and the KR so I can check that on mine also?  Of course I never push my car till at full operating temps, but I have never been able to connect my winter gas spike readings to any driving style, temperature or situation. With the exception of my random tranny glitch causing a super spike readings of as high as 7.
 
Had to run one of the boys to school the other morning(bus showed up, well flew by 10 minutes early)and not fully warmed up the slight throttle that usually scores negative return was pulling timing. Pulled over and let car warm fully and it was gone. Albeit a short and only one time experience I have not tried to replicate. Combine that with previous winter blend issues and I can only assume it's not good.

Rich

 
Pretty anxious to see you guys that do monitor try this out. I had no baseline #'s to compare my now watched fuel related gauges to.

Rich

 
That's an easy situation for me to duplicate. Can't wait to try it. That could very well be where my high readings are coming from. I just have not caught it and made the connection. I'll let you know what I find. Thanks for the tip!
 
Larrylu said:
That's an easy situation for me to duplicate. Can't wait to try it. That could very well be where my high readings are coming from. I just have not caught it and made the connection. I'll let you know what I find. Thanks for the tip!
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Eagerly waiting on the findings! As my lone experience is hardly "evidence".

Rich

 
SHOnUup said:
Had to run one of the boys to school the other morning(bus showed up, well flew by 10 minutes early)and not fully warmed up the slight throttle that usually scores negative return was pulling timing. Pulled over and let car warm fully and it was gone. Albeit a short and only one time experience I have not tried to replicate. Combine that with previous winter blend issues and I can only assume it's not good.

Rich
Click to expand...
I don't believe that is an issue of any kind. I think that is the ECU is protecting the engine until all is up to temp. Boost is always limited as well.

 
FoMoCoSHO said:
SHOnUup said:
Had to run one of the boys to school the other morning(bus showed up, well flew by 10 minutes early)and not fully warmed up the slight throttle that usually scores negative return was pulling timing. Pulled over and let car warm fully and it was gone. Albeit a short and only one time experience I have not tried to replicate. Combine that with previous winter blend issues and I can only assume it's not good.

Rich
Click to expand...
I don't believe that is an issue of any kind. I think that is the ECU is protecting the engine until all is up to temp. Boost is always limited as well.
Click to expand...
Thx for the reassuring comments.

Stated for extra warnings to all, for the incoming frigid temps.

Torque and the scantool proving to be one of my favorite mods so far.

Rich

 
Well here is something new. I actually caught the positive 4.5 right as it was happening. Not a mystery any more. It was lugging at moderate throttle. Not enough throttle for a down shift but enough to get low low vac or maybe a little boost and voila 4 positive KR. I nailed  it right after and at WOT no KR or even a little negative. So I think it's octane deprived winter gas at part throttle lugging.
 
Larrylu said:
Well here is something new. I actually caught the positive 4.5 right as it was happening. Not a mystery any more. It was lugging at moderate throttle. Not enough throttle for a down shift but enough to get low low vac or maybe a little boost and voila 4 positive KR. I nailed  it right after and at WOT no KR or even a little negative. So I think it's octane deprived winter gas at part throttle lugging.
Click to expand...
I can jive with that.

Rich

 
Not present here...I can only get +KR readings when car is not up to full operating temps, and during a WOT lift I get an occasional +.8 or +1...other than that no +KR at all.

I did however experience this same example of timing being pulled quite regularly with the winter blend.

Rich

 
SHOnUup said:
Larrylu said:
Well here is something new. I actually caught the positive 4.5 right as it was happening. Not a mystery any more. It was lugging at moderate throttle. Not enough throttle for a down shift but enough to get low low vac or maybe a little boost and voila 4 positive KR. I nailed  it right after and at WOT no KR or even a little negative. So I think it's octane deprived winter gas at part throttle lugging.
Click to expand...
I can jive with that.

Rich
Click to expand...
I am seeing the same thing. Haven't tried the ethanol yet..


Sent from my XT1060 using Tapatalk
 
I will add to this. Thought my car was feeling sluggish so I did a 1:12 gallon ratio of e85/93 and it woke up the beast.

I will continue to use this ratio and monitor it, this winter gas really is garbage.
 
Larrylu said:
Well here is something new. I actually caught the positive 4.5 right as it was happening. Not a mystery any more. It was lugging at moderate throttle. Not enough throttle for a down shift but enough to get low low vac or maybe a little boost and voila 4 positive KR. I nailed  it right after and at WOT no KR or even a little negative. So I think it's octane deprived winter gas at part throttle lugging.
Click to expand...
This is the only time I see +kr also. This exact scenario.

2010 RCM non PP
K&N panel filter
sp534 @ 30
unleashed 93 performance+boost 3bar
more to come.....

 
I pretty much see no KR, random 1.5 here or there normally after a hard shift.

Almost always negative kr and pegs  to -5 quick.
 
Almost makes me want to grow a  little patch of corn in the garden next year. Little show of support....;D

Rich

 
So now I know I got some company....what to do....switch to a 91 octane tune for the winter, or do a little custom blend. My tank is low so it's time to decide. The allure of a custom blend is undeniable!
 
Says no e/20 - e/85 in the fuel door...still within parameters with a small mix...

If anyone tries the 91 tune, that would add to the info here though.

Rich

 
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