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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Anyone running rb turbo an e85 no meth?



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      02-11-2013, 06:55 PM   #1
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Anyone running rb turbo an e85 no meth?

I wanted to see dyno numbers
Im about to install the rb turbos on my 335is
An idk if to run meth an e85 or just e85 ?
I will be getting pro tuned by cobb
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      02-11-2013, 07:12 PM   #2
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You can go E85 blend but you will lean out. Gotta upgrade your lpfp.
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      02-11-2013, 07:19 PM   #3
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Quote:
Originally Posted by themyst View Post
You can go E85 blend but you will lean out. Gotta upgrade your lpfp.
Ive been reading about the walbro fuel pumps their only 100$?
Compare to the fftec for
600?

I wonder if ltbmw is doing lpfp upgrades
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      02-11-2013, 07:58 PM   #4
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if you want 500whp+ than you'll need Meth and Race gas. Thats what that white 335 you race had...

With E85 you COULD lean out cause of the extra boost. You should be able to make the massive torq but not the high rpm HP when running a e85 mix alone.
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      02-11-2013, 08:04 PM   #5
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Quote:
Originally Posted by SfValley335i View Post
if you want 500whp+ than you'll need Meth and Race gas. Thats what that white 335 you race had...

With E85 you COULD lean out cause of the extra boost. You should be able to make the massive torq but not the high rpm HP when running a e85 mix alone.
So if you upgrade the LPFP would running 100% e85 give you those numbers or do you still need meth/race gas?
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      02-11-2013, 09:58 PM   #6
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Quote:
Originally Posted by pinky_and_me View Post
So if you upgrade the LPFP would running 100% e85 give you those numbers or do you still need meth/race gas?
I dont think anyone with RB turbos has run 100% e85. And even then I dont think so, meth is being used to cool the charge and as a fuel when boosting 20psi. Remember e85 is cheap race gas. People breaking 500whp on RB turbos are using Race gas (MS109) and meth. Not race as in 100octane from pump.


E85 is great but mpg drops so much when you get into high mixtures of it. If you literally dont have a e85 station within 10 miles, then running 50% or more e85 is just crazy. Because more than likely you'll be filling up twice a week.

On pump gas I get about 21mpg, on a 20% e85 mix I get 19.5mpg, on about a 80% e85 mix I was getting 15mpg.


If I had to throw out a number I'd say a car running RB turbo with e85 mixture would not be able to break 500whp. It would break 500wtq easily.
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      02-11-2013, 10:09 PM   #7
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Quote:
Originally Posted by SfValley335i View Post
I dont think anyone with RB turbos has run 100% e85. And even then I dont think so, meth is being used to cool the charge and as a fuel when boosting 20psi. Remember e85 is cheap race gas. People breaking 500whp on RB turbos are using Race gas (MS109) and meth. Not race as in 100octane from pump.


E85 is great but mpg drops so much when you get into high mixtures of it. If you literally dont have a e85 station within 10 miles, then running 50% or more e85 is just crazy. Because more than likely you'll be filling up twice a week.

On pump gas I get about 21mpg, on a 20% e85 mix I get 19.5mpg, on about a 80% e85 mix I was getting 15mpg.


If I had to throw out a number I'd say a car running RB turbo with e85 mixture would not be able to break 500whp. It would break 500wtq easily.
I've run an E45 mixture with stock fuel system (7-8 gallons or so of summer blend E85) I leaned out badly on RBs at around 19 psi north of 6000 RPM. Surprised it didn't lean out much sooner. Once I threw meth into the mix (CM10 nozzle, 800cc/min) my trims went negative. Meth = ultimate fueling band-aid!

I would guess it would lean out much sooner if I upped the methanol mix. Don't think it really matters though, I was running near 15 degrees of timing in the mid-range on that E45 mix and nary a peep out of my knock sensors, so there is a bit of diminishing returns at play here.
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      02-12-2013, 01:04 AM   #8
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Quote:
Originally Posted by themyst View Post
You can go E85 blend but you will lean out. Gotta upgrade your lpfp.
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      02-12-2013, 01:08 AM   #9
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well i did 435hp/480Tq on 50% e85 FBO no meth. so with RB's you should be close to 500whp
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      02-12-2013, 01:11 AM   #10
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Quote:
Originally Posted by SfValley335i View Post
I dont think anyone with RB turbos has run 100% e85. And even then I dont think so, meth is being used to cool the charge and as a fuel when boosting 20psi. Remember e85 is cheap race gas. People breaking 500whp on RB turbos are using Race gas (MS109) and meth. Not race as in 100octane from pump.


E85 is great but mpg drops so much when you get into high mixtures of it. If you literally dont have a e85 station within 10 miles, then running 50% or more e85 is just crazy. Because more than likely you'll be filling up twice a week.

On pump gas I get about 21mpg, on a 20% e85 mix I get 19.5mpg, on about a 80% e85 mix I was getting 15mpg.


If I had to throw out a number I'd say a car running RB turbo with e85 mixture would not be able to break 500whp. It would break 500wtq easily.
have to disagree...you can get 500 Hp with E85/meth if you use the backend flash 3.5 bar N20 and up your additive to 80. I had a coolmist tank and had huge issues with my meth tank (huge amounts of air) and I hit 513 Hp and that was with my meth flow at 50-60%......I have a devils own meth kit (no leaks with SS & 4-AN) and I will be going on the Dyno here very soon within a week or so....will report back.


Just noticed you said with just E85, in that case I agree....without meth it would be hard to get 500Hp I would imagine.
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      02-12-2013, 10:18 AM   #11
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We tickled 499whp on a light E30 E85 mixture + RB's 19psi midrange to 17psi up top. No lean out issues but didn't push our luck. 263whp baseline.

Cobb PROtuned
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      02-12-2013, 12:00 PM   #12
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Quote:
Originally Posted by M3DCTBT View Post
We tickled 499whp on a light E30 E85 mixture + RB's 19psi midrange to 17psi up top. No lean out issues but didn't push our luck. 263whp baseline.

Cobb PROtuned
That's great power there! With meth I would imagine 525+
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      02-12-2013, 12:35 PM   #13
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How accurate is Virtual Dyno compared to real world dyno?
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      02-12-2013, 04:50 PM   #14
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Quote:
Originally Posted by M3DCTBT View Post
We tickled 499whp on a light E30 E85 mixture + RB's 19psi midrange to 17psi up top. No lean out issues but didn't push our luck. 263whp baseline.

Cobb PROtuned
Was that on the stock fuel system? If the RBs can produce high 400's on a e85 mix without meth, this would be a route I would like to eventually go with.
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      02-12-2013, 04:59 PM   #15
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Quote:
Originally Posted by RnmEvo9 View Post
Was that on the stock fuel system? If the RBs can produce high 400's on a e85 mix without meth, this would be a route I would like to eventually go with.
I tried it but leaned out at but I could have had a weak fuel pump.
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      02-14-2013, 04:10 PM   #16
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so whats the best tune right now for the rbs?
i want pro tune more the piggy back i seemd to notice dct doesnt slip when it pro tuned
but when it has jb4 it does
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      02-14-2013, 04:13 PM   #17
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Quote:
Originally Posted by Torres_335i View Post
well i did 435hp/480Tq on 50% e85 FBO no meth. so with RB's you should be close to 500whp
yeah thats about right most people get that on fbo e40-e50
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      02-14-2013, 04:30 PM   #18
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Quote:
Originally Posted by Monster335 View Post
How accurate is Virtual Dyno compared to real world dyno?
Vd is accurate as the data you provide it.
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      02-14-2013, 04:31 PM   #19
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Quote:
Originally Posted by themyst View Post
I've run an E45 mixture with stock fuel system (7-8 gallons or so of summer blend E85) I leaned out badly on RBs at around 19 psi north of 6000 RPM. Surprised it didn't lean out much sooner. Once I threw meth into the mix (CM10 nozzle, 800cc/min) my trims went negative. Meth = ultimate fueling band-aid!

I would guess it would lean out much sooner if I upped the methanol mix. Don't think it really matters though, I was running near 15 degrees of timing in the mid-range on that E45 mix and nary a peep out of my knock sensors, so there is a bit of diminishing returns at play here.
Hey guys.. What does it mean to lean out? Im fbo, g5 iso n i run 50/50 e85... Just curious
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      02-14-2013, 05:52 PM   #20
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Quote:
Originally Posted by O2nice View Post
Hey guys.. What does it mean to lean out? Im fbo, g5 iso n i run 50/50 e85... Just curious
Max out fuel trims, not enough octane/fuel
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      02-15-2013, 12:21 AM   #21
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Quote:
Originally Posted by busta7777
so whats the best tune right now for the rbs?
i want pro tune more the piggy back i seemd to notice dct doesnt slip when it pro tuned
but when it has jb4 it does
RB's BMS JB4 G5 ISO Flash w/ MS109 523 whp and 531 tq

Manual Tranny; holding up good no slippage
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      02-15-2013, 05:17 PM   #22
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Originally Posted by SRanch335i View Post
RB's BMS JB4 G5 ISO Flash w/ MS109 523 whp and 531 tq

Manual Tranny; holding up good no slippage
ms109 is good but cant put that everyday
u didnt do a daily set up?
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