E85 hard morning starts

[CrackedHorn]

Anyone else have really rough cold starts with E85 when ambient temps are 90 degrees Fahrenheit?

Only happens if the car sits for a while, like overnight.

I sent the datalog of tbis happening to the tuner and the tuner says it's normal.

This doesn't sound correct to me at all. I can't imagine what its going to be like when it's cold out.

I'm also getting what feels like "lugging" at around 3k rpm with 30% throttle and they claim this is normal, too. So I'm at a loss I guess. Lol


15 mustang
Paxton Novi
E85 (tested)
ID 1050
Twin pumps, always on

Sponsored

 

[NightmareMoon]

IDK about lugging, but from my understanding and first hand experience, yeah cold starts are not as awesome. Its also hard to datalog them (at least with my tuner device), so its hard to iterate on improvements.

Mine was mostly worse in cold weather, I think, but that just probably just comes down to your tune. If your warms weather starts are hard, but your cold weather starts are great, I wouldn't fight too much over it, its going to be cooling off soon enough.

 

[engineermike]

Get a new tuner.

The oem flex F-150’s start fantastic in cold weather. If ford can do it why can’t your tuner? I’ve tested my F-150 on e85 and it starts perfect to at least 40 deg, and that was sitting outside all night.

 

[CrackedHorn]

Get a new tuner.

The oem flex F-150’s start fantastic in cold weather. If ford can do it why can’t your tuner? I’ve tested my F-150 on e85 and it starts perfect to at least 40 deg, and that was sitting outside all night.

Could have. Should have.

I've been less than impressed at this point. I'm basically just being told I'm ignorant anytime I mention an issue. Or that "it's normal". Irrespective of the obvious at hand.

I understand E85 isn't as easy to light off. But in 90 degree ambient temps, I just have a hard time believing it's normal for the car to sputter, cough, and stumble for 5-10 seconds before running. Especially with new plugs, new coils, etc.

 

[engineermike]

Is your tune locked?

 

[Soulja4187]

Could have. Should have.

I've been less than impressed at this point. I'm basically just being told I'm ignorant anytime I mention an issue. Or that "it's normal". Irrespective of the obvious at hand.

I understand E85 isn't as easy to light off. But in 90 degree ambient temps, I just have a hard time believing it's normal for the car to sputter, cough, and stumble for 5-10 seconds before running. Especially with new plugs, new coils, etc.

I 2nd the get a new tuning Company. You should try Wengerd Performace. A copy of my buddies use them and they constantly use E85 and I never once heard them complaint about E85 start up.

 

[CrackedHorn]

Is your tune locked?

Yes

 

[SheepDog]

I just have a hard time believing it's normal for the car to sputter, cough, and stumble for 5-10 seconds before running.

It isn't normal. Even in the middle of Winter in Colorado my car fires right up

 

[Cordero1]

I had this issue but only in winter cold starts. I hit up Lund & they sent a fix for it. Next car same deal, asked JPT & I was fed some BS about it being normal for winter time. So tuner CAN fix it for you.

 

[K4fxd]

My E85 tune starts fine down to about 20 degrees F. Below that I get some long cranks.

 

[CrackedHorn]

Tuner advised that I shouldn't run E85 when it's 40 degrees ambient temps and that tuning to add more fuel would potentially fix the issue, but it would flood the engine and would kill the spark plugs.

(I brought up concerns of it starting when the weather cools down in my area)

They also stated that only 1% of their customers run e85 during winter months.

They are sending over a revised tune now so we'll see.

 

[K4fxd]

I'm just using the F150 fueling parameters. Find a new tuner.

 

[SheepDog]

Tuner advised that I shouldn't run E85 when it's 40 degrees ambient temps and that tuning to add more fuel would potentially fix the issue, but it would flood the engine would kill the spark plugs.

They also stated that only 1% of their customers run e85 during winter months.

They are sending over a revised tune now so we'll see.

Sounds like something Lund would say.

@Wengerd Performance , this gentleman would like to give you some money to make his car run properly

 

[Wengerd Performance]

My twin turbo 2015 GT TT on FIC1650s has no issues cold or hot

 

[junits15]

Tuner advised that I shouldn't run E85 when it's 40 degrees ambient temps and that tuning to add more fuel would potentially fix the issue, but it would flood the engine and would kill the spark plugs.

(I brought up concerns of it starting when the weather cools down in my area)

They also stated that only 1% of their customers run e85 during winter months.

They are sending over a revised tune now so we'll see.

yeah whoever that is doesn't know what they're talking a bout, getting this thing to start on e in any weather is simple. I've started below zero and above 100 with zero issues.

Sponsored