[Ballistic]

Originally Posted by GEOS07335i

Alright I've addressed quite a few maintenance issues in the last week. Can someone take a look and let me know what you think. https://datazap.me/u/geosbmw/3rd-5th...14-24-28-29-30

I do have about 1.7g of E mixed with 93. In my previous post I had a 2+ PSI boost leak it doesn't look nearly as bad now since I swapped out VCG, PCV Valve. Feedback really appreciated.

THANKS IN ADVANCE!!!

1 gallon of E85 on a full tank max! You are not even running an E map.
Still; The stock fuelsystem should be able to handle it. It looks like you need to replace your LPFP.

[studio54]

Originally Posted by Ballistic

It does not have a sensor. afaik it's a PWM percentage of the vacuum controllers. 100% is the maximum amount of vacuum pulses so maximum closure.

Ok, so it's more something like DME is commanding xx % of PWM.

If i understood, during spooling at WOT my wgdc banks are 90%, because the DME is asking 90% (and calculated that 90% is enough to reach the psi target), not because it can't go higher.

But it does not exclude that my wastegate could be lazy, or worn, especially if i have a bit slow initial spooling.

I will probably replace my boost solenoids anyway, and see if that helps... before maybe adjusting rear rod.

[GEOS07335i]

Originally Posted by Meatos

DONT do any more pulls above 5000rpm until you have fueled up more 93, you have to much e85 for the pumps to keep up, engine going lean on the top because rail pressure drops to 600psi when its not fed properly by the lpfp.

And yes the boost looks better so you have did something that helped

Ok thanks guys for the recommendations. I was told to add 3 gallons of emix to a full tank of gas because I was seeing some timing corrections. I've got about 3/4's of a tank full of gas. I'll fill it up with 93.

Originally Posted by Ballistic

1 gallon of E85 on a full tank max! You are not even running an E map.
Still; The stock fuelsystem should be able to handle it. It looks like you need to replace your LPFP.

Ok I though you could add up to 3g of E85 on a full tank. No emap it was to try and address the timing corrections.

[feuer]

Originally Posted by GEOS07335i

Ok thanks guys for the recommendations. I was told to add 3 gallons of emix to a full tank of gas because I was seeing some timing corrections. I've got about 3/4's of a tank full of gas. I'll fill it up with 93.
Ok I though you could add up to 3g of E85 on a full tank. No emap it was to try and address the timing corrections.

3 to 4gal E85 on full tank 93 is absolutely OK. If your pumps can't push the fuel that is whole separate issue.

[asiflicious]

Originally Posted by Meatos

Looks fine, but i would not go higher than e30 before changing the lpfp, it struggles to keep up, and this was in 3rd gear maybe in 4th, 5th it cant keep up, i would log a higher gear to be safe.

But I should be fine with this mixture?

[Meatos]

Originally Posted by asiflicious

But I should be fine with this mixture?

Log a higher gear pull to be sure the lpfp keep up is my suggestion, otherwise its look just fine

[asiflicious]

Originally Posted by Meatos

Log a higher gear pull to be sure the lpfp keep up is my suggestion, otherwise its look just fine

Okay I'll try tonight. It's been ridiculously difficult trying to get decent pulls for data logging with all the traffic there's been in Portland, even after 10pm haha. I did notice that my lpfp dipped below 50 a bit and Ken recommended that I add a couple more gallons of pump on top but I'm kinda worried about diluting it too much for the E30 map. Can I just finish the rest of tank even if my lpfp dips below 50 occasionally and then fill up with pump and flash back to the pump gas flash?

[Meatos]

Originally Posted by asiflicious

Okay I'll try tonight. It's been ridiculously difficult trying to get decent pulls for data logging with all the traffic there's been in Portland, even after 10pm haha. I did notice that my lpfp dipped below 50 a bit and Ken recommended that I add a couple more gallons of pump on top but I'm kinda worried about diluting it too much for the E30 map. Can I just finish the rest of tank even if my lpfp dips below 50 occasionally and then fill up with pump and flash back to the pump gas flash?

Ofcourse but i would be careful going wot on higher gears til redline until you logged, but a new lpfp is needed if you want to use the E maps safely

[asiflicious]

Originally Posted by Meatos

Ofcourse but i would be careful going wot on higher gears til redline until you logged, but a new lpfp is needed if you want to use the E maps safely

It's not worth it for me since there's only one E85 station in all of Oregon and it's 30 minutes away from me. Should I add a couple of gallons of pump gas on top or should I just go through the rest of what's left?

[Meatos]

Originally Posted by asiflicious

It's not worth it for me since there's only one E85 station in all of Oregon and it's 30 minutes away from me. Should I add a couple of gallons of pump gas on top or should I just go through the rest of what's left?

Do you have room for some gallons then just fill up and change map, will work just fine, let the dme adapt for some time before doing wot

[asiflicious]

Originally Posted by Meatos

Do you have room for some gallons then just fill up and change map, will work just fine, let the dme adapt for some time before doing wot

Yeah I'm at half a tank. There won't be any problems using a pump gas tune with a bit of E85 still in the tank right?

[Meatos]

Originally Posted by asiflicious

Yeah I'm at half a tank. There won't be any problems using a pump gas tune with a bit of E85 still in the tank right?

Absolutely not, people often you fill up some E with 93 maps to get rid of corrections

[asiflicious]

Originally Posted by Meatos

Absolutely not, people often you fill up some E with 93 maps to get rid of corrections

Great, I'll do that! I will miss that E30 power though thanks for the help!

[Paanzerfaust]

Originally Posted by asiflicious

But I should be fine with this mixture?

I believe what they're saying is, on your current map (since its not e30 map) you are going a bit too lean. If you flashed an e30 map it might be a different story because I believe that addresses the lean-ness by having your pump add more, but if your pump can't handle it then you should stay away from the e85 blends for now. A properly function lpfp can handle the e30 blend (3-4gal e85) ON THE E30 MAP. As is right now on your current tune that much e85 would not be good for your car.

[asiflicious]

Originally Posted by Paanzerfaust

I believe what they're saying is, on your current map (since its not e30 map) you are going a bit too lean. If you flashed an e30 map it might be a different story because I believe that addresses the lean-ness by having your pump add more, but if your pump can't handle it then you should stay away from the e85 blends for now. A properly function lpfp can handle the e30 blend (3-4gal e85) ON THE E30 MAP. As is right now on your current tune that much e85 would not be good for your car.

I am on an E30 map. That log is my E30 map log

[Paanzerfaust]

Originally Posted by asiflicious

I am on an E30 map. That log is my E30 map log

My mistake, for some reason I thought Geo's post was yours. I didn't really get to look at your log, just read the others posts and yours. Like what a couple other guys have said, having some e85 in there on another map should be fine from what I've seen but it might not run perfect. The big issue is obviously the % of ethanol, since it doesn't burn the same as gasoline and requires more ethanol than gas to make equivalent energy so without an E map tune pumping more fuel over normal, there are potential problems that'd stem from not having the right amount of energy being produced from the amount of fuel being injected. If it was me I'd top off the tank with 93oct and stay away from high loads/wot until you're through that tank of gas, but as long as your overall ethanol % is pretty low you shouldn't have any (real) problems in your day to day driving.

[Walletsr]

https://datazap.me/u/walletsr/v8-bet...og=0&data=3-24

Just tried out the MHD beta maps. Running stage 2+ e50 map

[Ballistic]

Originally Posted by GEOS07335i

Ok thanks guys for the recommendations. I was told to add 3 gallons of emix to a full tank of gas because I was seeing some timing corrections. I've got about 3/4's of a tank full of gas. I'll fill it up with 93.

Ok I though you could add up to 3g of E85 on a full tank. No emap it was to try and address the timing corrections.

Yes it is, if you run a E map.

You are running a pump fuel map and you shouldn't add more then a gallon to a full tank.
3 gallons will bring you to E25 in no time as US gas already contains ethanol.

[GEOS07335i]

Originally Posted by Ballistic

Yes it is, if you run a E map.

You are running a pump fuel map and you shouldn't add more then a gallon to a full tank.
3 gallons will bring you to E25 in no time as US gas already contains ethanol.

Thanks so just to make sure I'm understanding things correctly related to E-mix in the US. If I'm on stock LPFP and not running an running an eMix only use one gallon per full tank to address timing corrections. No more than 1 gallon e correct per full tank?

If on stock LPFP you can use up to 3-4 gallons max on full tank but ONLY on e25 mix map? Assuming the pump can handle it. Is this a correct statement?

I'm running 1.7g e85 which is a more than the recommended and LPFP is struggling to keep up just dilute it back with premium gas(93). I'll start looking for a replacement.

Besides the lower pressure captured on the logs any other symptoms I should look for in a failing LPFP?

[feuer]

Originally Posted by Ballistic

Yes it is, if you run a E map.

You are running a pump fuel map and you shouldn't add more then a gallon to a full tank.
3 gallons will bring you to E25 in no time as US gas already contains ethanol.

3-4 gallons on full tank 93 is absolutely OK even on BMW 8psi map. No need for E map. You want to see logs?

[Walletsr]

Just switched to the MHD beta map Stage 2+ e50. How do my logs look?

https://datazap.me/u/walletsr/v8-bet...og=0&data=3-24

[Meatos]

Originally Posted by Walletsr

Just switched to the MHD beta map Stage 2+ e50. How do my logs look?

https://datazap.me/u/walletsr/v8-bet...og=0&data=3-24

Looks ok but to short log and you dont floor it, post another that is done correctly