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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 > what would you do next for more power?



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      06-16-2014, 07:18 PM   #23
Jhe
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Cheap but noticeable gain

Go to Amazon and try the octane booster called "Torco". It's only
$21.95/qt... I get two quarts and shipping is free. It is by far the real deal. If you add the whole quart to like half tank of 91, it raises your octane to somewhere around 100. It has the actual ratios on the bottle, but it's worth it. I run it on top of Trick 101.... Jet fuel. You can also contact Trick directly, and they can tell you the closest place to get it based on your zip code. One more opinion.... No cat DP's will make you smile from ear to ear. That is a proven fact.
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      06-16-2014, 08:02 PM   #24
Pr335bob
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Quote:
Originally Posted by 924er View Post
i was gonna get DPs cuz i have an FMIC n intake already with cobb but recently i just tried 20% e85 mixed with 91 running cobb stage 1 aggressive, and what a bigg difference it is in power! I'm gonna hold off on DPs until i get used to it lol
So you don't have to run a separate map or tune on Cobb to run a e85 mixture?
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      06-18-2014, 03:41 PM   #25
924er
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Quote:
Originally Posted by Pr335bob View Post
So you don't have to run a separate map or tune on Cobb to run a e85 mixture?
well from what I been hearing around the forums some ppl use the regular maps and run e85 mix. COBB doesn't recommend it but it won't hurt to do some logs and see how the engine is running/

here is a stage 1 aggressive on 91octane 20%e85

http://www.datazap.me/u/moswissa/agg...=0&data=1-5-18

can anyone chime on this log
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      06-18-2014, 07:55 PM   #26
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The car can run with some e85 fine and if the flash tune is overly aggressive for your car/conditions it will react positively. Eventually, however, if you do not adjust the fuel scalar you will either throw mixture codes or max out trims and run very lean/limp modes.

JB4 gets around this by biasing fuel pressure sensors. Bbflash, OFT and Cobb guys just need to adjust the fuel scalar on any map they want to use e85 with. And then might as well increase timing/boost while they are at it. But this crosses the line for most people I've noticed.
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