TTFS/XDI late e-series single HPFP upgrade

Xer0449

Corporal
Jan 30, 2017
174
59
0
We will see :). I've asked Ken for an e50 map <= 19psi with some timing. Let's see if the issue is reproduced.
 

doublespaces

Administrator
Oct 18, 2016
9,303
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AZ
Ride
2009 E93 335i
19 psi usiall it takes to get the dct flywheel misfires? Either way you're six bolt so you can buy the s55 flywheel or the mfactory flywheel. Mine actually showed up in the mail today.
 
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Xer0449

Corporal
Jan 30, 2017
174
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19 psi usiall it takes to get the dct flywheel misfires? Either way you're six bolt so you can buy the s55 flywheel or the mfactory flywheel. Mine actually showed up in the mail today.

I think the magic number is either 21/22 psi. Is the 1100$ flywheel + time/labor of dropping the DCT worth it for a few extra psi? For my daily; probably not...
 

NoQuarter

Major
Nov 24, 2017
1,662
1,066
0
Indiana, USA
Ride
Z4 35is, 535xi, X5 35i
I think the mfactory was much cheaper than that but may not matter anyway. They don't have any more and have not stated they intend to make more (yet).
 

Xer0449

Corporal
Jan 30, 2017
174
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I think the mfactory was much cheaper than that but may not matter anyway. They don't have any more and have not stated they intend to make more (yet).

Yeah, looks like I was too little too late on that one. Such is life.
 

houtan

Lieutenant
Nov 2, 2017
611
293
0
Ride
135i N55 DCT; PS2
Looks like the car is running solid Anything above 19 psi and it’s hit or miss for my car.

The m factory flywheel is a lower priced option if it performs the same as the M4 flywheel. We should know soon, hoping it works as expected and if it does, that m factory makes more!
 
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Xer0449

Corporal
Jan 30, 2017
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Looks like the car is running solid Anything above 19 psi and it’s hit or miss for my car.

The m factory flywheel is a lower priced option if it performs the same as the M4 flywheel. We should know soon, hoping it works as expected and if it does, that m factory makes more!

Are you running the stock DCT fw? If so, what kind of timing/fuel are you running?
 

KevinC39

Corporal
Jun 27, 2017
234
118
0
Ride
335i
wow that is expensive HPFP. how come you don't run pure E85 WITHOUT MIXING?
There's no reason to run more E85 than you need to. Running more just makes the pump work harder and makes you run out of fuel flow sooner
 

houtan

Lieutenant
Nov 2, 2017
611
293
0
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135i N55 DCT; PS2
There's no reason to run more E85 than you need to. Running more just makes the pump work harder and makes you run out of fuel flow sooner

The main thing I can think of is, running straight e85 is much more convenient than having to always calculate your ratios every time you fill up.
 

KevinC39

Corporal
Jun 27, 2017
234
118
0
Ride
335i
True. I was just explaining why you wouldn't want to. Convenience is definitely a reason to run it straight.
 
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doublespaces

Administrator
Oct 18, 2016
9,303
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AZ
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2009 E93 335i
The main thing I can think of is, running straight e85 is much more convenient than having to always calculate your ratios every time you fill up.

Unless you get E54 from the pump like the folks in AZ and surely elsewhere.
 

Xer0449

Corporal
Jan 30, 2017
174
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0
I keep hearing that "there's nothing to gain past e30", but right now the car is on E50 and feels incredible. I also run my tank down disgustingly fast.

We're still trying to keep it consistent. That phantom knock bullshit is beyond annoying and we keep running into it.

Posting up some new logs, too.
 

VACust

Corporal
Dec 1, 2016
112
53
0
US - Utah
I keep hearing that "there's nothing to gain past e30", but right now the car is on E50 and feels incredible. I also run my tank down disgustingly fast.

We're still trying to keep it consistent. That phantom knock bullshit is beyond annoying and we keep running into it.

Posting up some new logs, too.
I’ve always read there is not much if any benefit going over E50-60
 

Xer0449

Corporal
Jan 30, 2017
174
59
0
The main thing I can think of is, running straight e85 is much more convenient than having to always calculate your ratios every time you fill up.

The fuel-it ECA+app does a nice enough job of calculating your fill ups for you.
It's also in anticipation for motiv flex-fuel for whenever that happens on N55 :)

The app could use some love, though.
IMG_7201.PNG
 

Jake@MHD

Major
Platinum Vendor
Nov 7, 2016
1,593
2,060
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Philly
@jyamona any definitive input or differences between N54/N55 on this subject? ^

No they are about the same. E50ish is more than enough to reach MBT on mostly all setups. Running E85 is more-so just for convenience as the driver doesn't have to worry about blending, etc. I say run MHD FlexFuel :)
 

Xer0449

Corporal
Jan 30, 2017
174
59
0
No they are about the same. E50ish is more than enough to reach MBT on mostly all setups. Running E85 is more-so just for convenience as the driver doesn't have to worry about blending, etc. I say run MHD FlexFuel :)

Sure thing! Just waiting for it to release for these DME’s ;)