Quick question on JB4

STiLLsLow · 11-07-2016, 09:05 PM

Quote:

Originally Posted by lnjwtr

Im not sure how or the explanation behind it. But i was told by a very knowledgeable guy who owns one of the best shops here in houston running e85 was the cause and it was melted.

This worries me. I just installed the JB4, BMS intake on Friday night and running e35 on stock dp. Although I have a catless dp sitting here, I wasn't planning on installing it just yet. Any idea how high of an e85 blend he was running or a link to the post? This is the first I'm hearing about this and isn't consistent with the fact that ethanol lowers EGTs (or how some flex fuel vehicles from the factory can run e85 with stock emissions equipment

).

EDIT - Just googled it. Looks like it can be an issue but haven't found much on it yet.

AlpineWhite13 · 11-07-2016, 09:12 PM

Quote:

Originally Posted by STiLLsLow

This worries me. I just installed the JB4, BMS intake on Friday night and running e35 on stock dp. Although I have a catless dp sitting here, I wasn't planning on installing it just yet. Any idea how high of an e85 blend he was running or a link to the post? This is the first I'm hearing about this and isn't consistent with the fact that ethanol lowers EGTs (or how some flex fuel vehicles from the factory can run e85 with stock emissions equipment

).

It wasnt a post i read. When i was getting my downpipe installed at the shop i mentioned i had been running e85 on my stock downpipe. (I ran 3 gallons and rest 93 for about 3 fillups) He told me about it and said i was fortunate it didnt happened to me. I myself never had a problem.

STiLLsLow · 11-07-2016, 09:16 PM

Quote:

Originally Posted by lnjwtr

It wasnt a post i read. When i was getting my downpipe installed at the shop i mentioned i had been running e85 on my stock downpipe. (I ran 3 gallons and rest 93 for about 3 fillups) He told me about it and said i was fortunate it didnt happened to me. I myself never had a problem.

Gotcha, well thanks for the heads up. I'll have to look into it more and probably take it easy on the corn juice... one more reason to go ahead and get the catless dp installed

ziekxq · 11-07-2016, 09:24 PM

Quote:

Originally Posted by lnjwtr

It wasnt a post i read. When i was getting my downpipe installed at the shop i mentioned i had been running e85 on my stock downpipe. (I ran 3 gallons and rest 93 for about 3 fillups) He told me about it and said i was fortunate it didnt happened to me. I myself never had a problem.

Im more worried about the turbo then the dp at this point.

AlpineWhite13 · 11-07-2016, 09:38 PM

http://www.ft86club.com/forums/showthread.php?t=68109

I googled e85 melting catalytic converter and this was the first result. Old post on another car forum.

STiLLsLow · 11-07-2016, 10:07 PM

Quote:

Originally Posted by lnjwtr

http://www.ft86club.com/forums/showthread.php?t=68109

I googled e85 melting catalytic converter and this was the first result. Old post on another car forum.

I saw that too, but it didn't have much info. Another result came up with this where e85 is listed as a cause for a coated or oil-fouled substrate http://www.walkerexhaust.com/support...onverter-fails

Quote:

Originally Posted by ziekxq

Im more worried about the turbo then the dp at this point.

It's hard to imagine E85 has any negative effect on the turbo itself, but it I suppose it can have some effect on the metals or materials in the cat depending on application. People have been running straight e85 on turbos for way too long to not have reported an issue by now.

ziekxq · 11-08-2016, 09:42 AM

Quote:

Originally Posted by STiLLsLow

It's hard to imagine E85 has any negative effect on the turbo itself, but it I suppose it can have some effect on the metals or materials in the cat depending on application. People have been running straight e85 on turbos for way too long to not have reported an issue by now.

Thats good to know but I might still stick to 93 oct... and maybe get pure stg1. I think for me on a f10 that should be enough power as a DD.

AlpineWhite13 · 11-08-2016, 09:56 AM

I love running e85 and the extra power u get. My next step is fuel it stage 2 so ibcan run around e50-60 then pure stage 1

ziekxq · 11-20-2016, 04:57 PM

Quote:

Originally Posted by FSociety

E85 has amazing cooling properties and increases octane so you're just helping your car and environment

The stock fuel system on the F10 can take anywhere up to e50 (50% blend, or more/less) but most guys are running anywhere from e30 to e45 from what I've seen here.
E85 FTW

Do I have to change anytbing to put E85 or can I just install JB4 put it on map 5 and put 3 gallons of E85 + 93oct?

FSociety · 11-20-2016, 09:45 PM

Quote:

Originally Posted by ziekxq

Do I have to change anytbing to put E85 or can I just install JB4 put it on map 5 and put 3 gallons of E85 + 93oct?

You most definitely need the JB4 Flex-Fuel wires to be connected to take advantage of the e85. You also need to have proper logging going on to see how your car likes it. Depending on your area (Winter area) gotta limit the e85 due to winter blends being lower than summer blends area.

ziekxq · 11-21-2016, 03:42 PM

Quote:

Originally Posted by FSociety

You most definitely need the JB4 Flex-Fuel wires to be connected to take advantage of the e85. You also need to have proper logging going on to see how your car likes it. Depending on your area (Winter area) gotta limit the e85 due to winter blends being lower than summer blends area.

When you refer to.logging are you talking about trim? If so, what is considered safe?

FSociety · 11-21-2016, 04:09 PM

Quote:

Originally Posted by ziekxq

When you refer to.logging are you talking about trim? If so, what is considered safe?

When I refer to logging there's much more than just trims.

- Igniting Timing
- AFR
- Fuel Pump (FP_H)
- Target
- Boost
- Trims
- Throttle

Get the JB4 bible here
http://f30.bimmerpost.com/forums/sho....php?t=1136840

ziekxq · 12-03-2016, 08:07 PM

Do I need to splice or posi-tap any wires? Im thinking about ordering it in a day or two.

Kracker DC5 · 12-04-2016, 11:52 AM

Quote:

Originally Posted by lnjwtr

You need a downpipe to run map 2 but u dont necessarily need an intake. I would also not run e85 without a downpipe. I know of at least one case it melted the factory catalytic converter.

Kinda strange considering that the EGTs from e85 mixtures are usually several hundred degrees cooler...unless timing was past MBT and increased combustion chamber pressures. Kind of similar how anti lags work, but JB4 dont allow timing adjustments

1st post

ziekxq · 12-04-2016, 05:00 PM

Quote:

Originally Posted by ziekxq

Do I need to splice or posi-tap any wires? Im thinking about ordering it in a day or two.

Anyone got answer for this?

mike@x-ph.com · 12-04-2016, 05:02 PM

Quote:

Originally Posted by ziekxq

Do I need to splice or posi-tap any wires? Im thinking about ordering it in a day or two.

Quote:

Originally Posted by ziekxq

Anyone got answer for this?

No splicing or posi-tap needed

ziekxq · 12-04-2016, 05:32 PM

Quote:

Originally Posted by mike@x-ph.com

No splicing or posi-tap needed

Thanks! Now i just have to make sure if my harness is a or b, i think it is b because it is late '11 model.

mike@x-ph.com · 12-04-2016, 05:40 PM

Quote:

Originally Posted by ziekxq

Thanks! Now i just have to make sure if my harness is a or b, i think it is b because it is late '11 model.

If you are not sure just send me a picture of the harness

ziekxq · 12-07-2016, 05:48 PM

Do I have to remove any covers to find TMAP sensor plug?

Or where is it located ?

ziekxq · 12-07-2016, 06:20 PM

Quote:

Originally Posted by mike@x-ph.com

If you are not sure just send me a picture of the harness

Looks like harness A to me:

mike@x-ph.com · 12-07-2016, 06:26 PM

Quote:

Originally Posted by ziekxq

Looks like harness A to me:

Yea looks like its Harness A

ziekxq · 12-08-2016, 04:34 PM

Quote:

Originally Posted by mike@x-ph.com

Yea looks like its Harness A

Now last thing i want to confirm before i put my order in.

Do flexfuel wires come with jb4 or a separate buy? If separate buy, how many gallons of e85 can I add safely without the flexfuel wire?

11-07-2016, 09:38 PM	#27
AlpineWhite13 Private First Class 14 Rep 104 Posts Drives: 2013 535i m sport. Join Date: May 2016 Location: Houston Texas iTrader: (0)	http://www.ft86club.com/forums/showthread.php?t=68109 I googled e85 melting catalytic converter and this was the first result. Old post on another car forum.
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11-08-2016, 09:56 AM	#30
AlpineWhite13 Private First Class 14 Rep 104 Posts Drives: 2013 535i m sport. Join Date: May 2016 Location: Houston Texas iTrader: (0)	I love running e85 and the extra power u get. My next step is fuel it stage 2 so ibcan run around e50-60 then pure stage 1
	Appreciate 1 FSociety3812.50 Quote

12-03-2016, 08:07 PM	#35
ziekxq Major 320 Rep 1,299 Posts Drives: 2011 535i xDrive Join Date: Feb 2016 Location: United States iTrader: (0)	Do I need to splice or posi-tap any wires? Im thinking about ordering it in a day or two.
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12-07-2016, 05:48 PM	#41
ziekxq Major 320 Rep 1,299 Posts Drives: 2011 535i xDrive Join Date: Feb 2016 Location: United States iTrader: (0)	Do I have to remove any covers to find TMAP sensor plug? Or where is it located ? Last edited by ziekxq; 12-07-2016 at 06:02 PM..
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