Excessive KR
- Thread starter Lostneye
- Start date
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Angrymongoose
SHO Member
I didn't mean to make it seem like I believed the ethanol content of the gas had anything to do with the winter blend. I apologize if I made it seem that way.
I'm still going to try more of the Caseys stations in town and hope they are better. I'm hoping its the local storage part and not the supplier that is the issue.
I'm still going to try more of the Caseys stations in town and hope they are better. I'm hoping its the local storage part and not the supplier that is the issue.
Summer and winter gasoline are both the same ethanol content and octane rating. Available energy is a very minor difference - less than 2%. Fuels trims will quickly adjust for that.
Sgtmeatsauce1
2013 SHO +pp
I always run just Top Tier gas from top tier gas stations, not had any noticeable problems. I not even try an odd brand that's around me like Delta, US Gas or Birdies.....even though they are at least 10 cent a gal cheaper
Angrymongoose
SHO Member
Sinclair is a top tier brand, and they are the only top tier brand that carries 93 that I can find in Omaha.
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MHW100
SHO Member
Didn't have any bad bad knock issues but could never get OAR greater than about -.50 on Chevron 94 octane. Matt suggested 2 gals of E85 with a full tank of 94 and almost instantly it popped up to -.92.
I'd love to run this combo into the future but I'm not sure if I'm harming the engine long term. I do have the xdi 35. I forgot to ask Matt.
I'd love to run this combo into the future but I'm not sure if I'm harming the engine long term. I do have the xdi 35. I forgot to ask Matt.
Are you worried about the knocking on 94 octane, or adding a couple of gallons of flex fuel? You are already on E10 - moving up to E20 won't hurt.
Why did you get the Xdi 35 if you weren't running higher blends of ethnaol?
MHW100
SHO Member
I'm worried about running any amounts of Ethanol over the long term and what damage might occur to the engine components. Are you saying that this isn't a long term concern mixing up to E20?
I got the pump to wake up the car on gas. Made it much more powerful thanks to Matt. I'm not tuned to any Ethanol though.
The stock tune is calibrated to E10, which is what you are likely using. Ford states up to E15 is OK in their cars. Many here are running E30 long term without issues. LTFT fuel trims will adjust the fueling.
Look around the internet is you'll see many people running flex fuel on non-flex fuel engines. The plastic and stainless steel fuel lines can take it. Biggest concern on our engines is running out of pressure with the HPFP. You took care of that already. Check with your tuner, but it you have easy access to flex fuel, then take advantage of it.
Look around the internet is you'll see many people running flex fuel on non-flex fuel engines. The plastic and stainless steel fuel lines can take it. Biggest concern on our engines is running out of pressure with the HPFP. You took care of that already. Check with your tuner, but it you have easy access to flex fuel, then take advantage of it.
MHW100
SHO Member
Thanks for that. E85 just recently became available locally so you're right I will need to get an updated tune file given there isn't any harm.
High on Ethanol
Just Ain't Care
I accidentally filled up on 100% E85 once, so I told myself I'd take it easy on it.
Yep, that's what I told myself.
By the time I got to 3/4 tank I had already floored it from a stop up to around 75mph. Fast forward to 1/4tank and I had probably ran it hard at least 10x.
I checked my logs and yeah I ran the HPFP down to 1600psi a few times under load.
That's why I upgraded pumps, just in case I forget again.
But that was over 15k miles ago. No issues to date running anywhere from E30 to E50 random blended as a daily driver. The engine can take it, the stock fuel pump cannot. lol
Yep, that's what I told myself.
By the time I got to 3/4 tank I had already floored it from a stop up to around 75mph. Fast forward to 1/4tank and I had probably ran it hard at least 10x.
I checked my logs and yeah I ran the HPFP down to 1600psi a few times under load.
That's why I upgraded pumps, just in case I forget again.
But that was over 15k miles ago. No issues to date running anywhere from E30 to E50 random blended as a daily driver. The engine can take it, the stock fuel pump cannot. lol
DARTHSHO
SHO Member
I was actually tempted if there was anything special that you have to do to make it able to use flex fuel is it just the high pressure fuel pump
MHW100
SHO Member
So Matt has been very helpful with this newb.
He confirmed running e30 with my xdi and his tune are fine but recommended getting his dedicated e30 tune which delivers far more HP than just running e30 without that specific tune.
The issue with a dedicated tune is that you have to be accurate with the mix based on my limited understanding and the dedicated tune won't run on say e10 as an example. This places a lot more work to be done for a daily driver than filling up and driving. I still need to educate myself on testers and sensors.
He confirmed running e30 with my xdi and his tune are fine but recommended getting his dedicated e30 tune which delivers far more HP than just running e30 without that specific tune.
The issue with a dedicated tune is that you have to be accurate with the mix based on my limited understanding and the dedicated tune won't run on say e10 as an example. This places a lot more work to be done for a daily driver than filling up and driving. I still need to educate myself on testers and sensors.
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High on Ethanol
Just Ain't Care
Well I learned with my e85, I can't mix any less than 6 gallons per fill-up or it doesn't max out -4.0 KR. I usually go with 6~7 gallons when I get below 1/4 tank.
I'm running Matt's dedicated e30 tune 90% of the time and AJPTurbo e30 tune the other 10%.
I'm running Matt's dedicated e30 tune 90% of the time and AJPTurbo e30 tune the other 10%.
MHW100
SHO Member
So with Matt's tune it sounds like you aren't to fanatical about the measuring? Do you have the sensor to monitor it?
High on Ethanol
Just Ain't Care
No sensors. I just monitor KR and Lambda.
It doesn't matter if you have too much ethanol as long as you have the upgraded pump.
I've run 10gallons e85 to approximately 7 gallons 93, without any issues. The gains seem to taper off though. I'd say somewhere around e50 is the cars sweet spot. Although with more bolt-ons that could change. I'm done modding this car though. Just gonna ride it out for a little while longer.
It doesn't matter if you have too much ethanol as long as you have the upgraded pump.
I've run 10gallons e85 to approximately 7 gallons 93, without any issues. The gains seem to taper off though. I'd say somewhere around e50 is the cars sweet spot. Although with more bolt-ons that could change. I'm done modding this car though. Just gonna ride it out for a little while longer.
MHW100
SHO Member
If you are always certain you have more than 30% ethanol in the tank is there any reason to monitor anything on the dedicated e30 tune?
High on Ethanol
Just Ain't Care
I would always monitor KR no matter what, it's a good indicator of general engine condition and health. I'd follow up with Matt from Gearhead, but I have had no issues with running more than E30. When I go below E30(this is why I usually aim for E30+ mixing style) I notice the KR runs closer to 0(nothing wrong with 0 but I like adding timing). Based on experience, questions, and lots of datalogging Sheetz e85 appears to be close to 70-80% ethanol.
TL;DR would be to ask Gearhead, Matt is extremely knowledgeable and helpful.
TL;DR would be to ask Gearhead, Matt is extremely knowledgeable and helpful.
MHW100
SHO Member
Yes I'll get back with him on it. He's a big help. My general understanding is that going over 30 is ok it's going under on a dedicated e30 tune is not good.
I'm curious, what point do you say...I should switch to AJP E30?
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