[DASN54]

Please help. I've posted it in the general "take a look at my log" thread but not really receiving any guidance.

I have a well maintained e90 N54 Auto (XHP stage 3) with new fuel system (stock), index 12's, fresh eldor coils, 1 step colder plugs gapped at .22, DCI, downpipes, intercooler, charge pipes and bov running MHD Stage 2+ V9 E30 map.

this is my first tank of ethanol, I verified the e85 at the pump so I know its true e85; I had about a 1/4 tank of 100 octane in the tank and added 5 gallons of E85 and the rest CA 91. Flashed the e30 map and have done a couple pulls. My most recent one is below however my first someone said I was having too many timing corrections, can someone please provide some guidance? Much appreciated!

https://datazap.me/u/bmc-83/e30-log-...27-28-29-30-31

[type-dRew]

first off, holy shit dont try and look at that many pieces of data at once.

second, you need every cylinder timing correction logged. youre logging every cylinder total timing and its not necessary. just look at timing corrections for all 6 and then log cylinder 1 for total timing.

do you have flex fuel? if not, you dont need to log ethanol content. your short terms are a few % apart. might be time for new o2 sensors all around.

i will say, your fuel pressure looks fine. from what I can see it seems to be pretty healthy. getting some timing corrections around the shift, but with stock or xhp trans tune thats pretty normal. aside from that its hard to tell much.

get your logging parameters cleaned up and id also advise to log with the fuel you'd normally run(91 + ethanol) not with 100 partially in the tank. then try again.

[DASN54]

Originally Posted by type-dRew

first off, holy shit dont try and look at that many pieces of data at once.

second, you need every cylinder timing correction logged. youre logging every cylinder total timing and its not necessary. just look at timing corrections for all 6 and then log cylinder 1 for total timing.

do you have flex fuel? if not, you dont need to log ethanol content. your short terms are a few % apart. might be time for new o2 sensors all around.

i will say, your fuel pressure looks fine. from what I can see it seems to be pretty healthy. getting some timing corrections around the shift, but with stock or xhp trans tune thats pretty normal. aside from that its hard to tell much.

get your logging parameters cleaned up and id also advise to log with the fuel you'd normally run(91 + ethanol) not with 100 partially in the tank. then try again.

LoL! Just wanted to be sure I was thorough, I will make the change to timing paramenters, didnt realize I was logging ethanol content. I was running 100octane on the 95oct tune so yes going forward I will be running 91+E85 for E30 until I get port injection. Thanks for the info, I appreciate it. Just wanted to make sure I wasnt knocking dangerously.

[DASN54]

Run with suggested logging.

https://datazap.me/u/bmc83/run-3?log...7-8-9-10-21-25

[type-dRew]

It is ugly for sure. Id up your ethanol content 10% or more and try again. Your fuel pumps are fine so it shouldn't be an issue to run heavier E.

[DASN54]

Originally Posted by type-dRew

It is ugly for sure. Id up your ethanol content 10% or more and try again. Your fuel pumps are fine so it shouldn't be an issue to run heavier E.

Will go up to E40, new twins and port injection going in next weekend along with Custom Tune.

[type-dRew]

Originally Posted by DASN54

Will go up to E40, new twins and port injection going in next weekend along with Custom Tune.

I wouldnt even worry about it then, id start running the fuel you plan to run with that setup and make sure you get your base file from your tuner before you install.

[DASN54]

Originally Posted by type-dRew

I wouldnt even worry about it then, id start running the fuel you plan to run with that setup and make sure you get your base file from your tuner before you install.

For sure, planning on running straight e85, its 2 miles from my house! Thanks for the help bud.