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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 > Dont use 91 octane on 100% across the board on V2!!



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      10-20-2007, 11:02 AM   #23
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Quote:
Originally Posted by bmwzimmer View Post
unless it was a m6 vert. V2 should pull easilly
Even v1 will pull easily. There is not a single stock M6 on drag times that has gotten a better 1/8 mi time. The situation changes after about 110MPH where the M6 will pull easily on the v2 335i.
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      10-20-2007, 11:11 AM   #24
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Post no.12 in this thread http://www.e90post.com/forums/showth...19#post1567019

Shiv says to bump it up to 100% if your running the higher octane...
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      10-20-2007, 11:17 AM   #25
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Quote:
Originally Posted by stefano7171 View Post
Very interesting Eugen. I thought the map setting were not to be connected to the gas used, but to the user's preference and to the transmission used.

Are you sure that with 93 oct US(98 EU) knock could still be induced?

I ask because in Italy there is Vpower (100 oct) and a 98 octanes of another brand that is sometime the one I end up using (no shell station available).
I refer to this:

Quote:
Originally Posted by shiv@vishnu View Post
If you guys are running 96oct, go ahead and crank everything up to 100%

shiv
To your question, I am not sure, I did not test it and this is one of the things I would not want to test. It could work now and lead to problems in the summer. IMO some more torque between 2.500 to 5.500 rpm is not worth to risk anything. I think only a clear statement of Shiv can clarify.

The PROcede V2 is worth every cent, even when you don't max out torque.

- Eugen

Last edited by e.n335; 10-20-2007 at 11:37 AM..
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      10-20-2007, 11:47 AM   #26
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If I would be with Vishnu I would discuss if it's worth to release maps that can lead to knock that easy. If something would be damaged everybody will say it has been caused by the PROcede V2. Nobody will say I set everything to the max even I knew it better to don't do so. A reputation risk.

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      10-20-2007, 11:53 AM   #27
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Quote:
Originally Posted by pushok132 View Post
I decided to do 100% accross the board for the torque selection for the V2 and i induced knock. Car was hellla faster than the other settings but you need higher than 91 octane to not have any problems. After about 4K RPM's you will have power cut out and here a click click click and the rpm's just hang out for a little while untill you let off throttle. This is under full throttle. Just thought id let you guys know so you dont make the same mistake i have made. Everything works perfect now that i used the settings that the map came with. I talked to the people at vishnu and they said if you use 100 octane or like the other guy using 93 octane or above you will be perfectly fine. BTW. I Smoked my friends m6 . Did the race 3 times up to 100 and i had 5-7 car lengths on him and pulling haha. Will post videos when he sends them to me. He was in M mode and very mad lol.
Where did you hear the 'click click click' sound coming from? Did it sound like it was coming from the engine or somewhere else? Was a very loud and definite sound or just a faint clicking? Also, you say it occurred above 4k rpm...was it a continual sound above 4k until you let off?

Are you 100% positive it's knock or could it be something else? Also, if one experiences knock often enough, what would be the consequences to the engine?
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      10-20-2007, 12:10 PM   #28
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If the engine starts to knock won't it immediately throw a code if it can't pull enough timing?
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      10-20-2007, 12:12 PM   #29
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Quote:
Originally Posted by BoostedBMW View Post
If the engine starts to knock won't it immediately throw a code?
I don't think so. The engine is designed to run on the threshhold of knock for efficiency and power purposes. Maybe if it had to retard timing a great deal in a small amount of time perhaps. - edit: just saw your change.
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      10-20-2007, 12:15 PM   #30
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Quote:
Originally Posted by sflgator View Post
Where did you hear the 'click click click' sound coming from? Did it sound like it was coming from the engine or somewhere else? Was a very loud and definite sound or just a faint clicking? Also, you say it occurred above 4k rpm...was it a continual sound above 4k until you let off?

Are you 100% positive it's knock or could it be something else? Also, if one experiences knock often enough, what would be the consequences to the engine?
I try to describe it, I had it once with v1.47 being in limp mode already.

It's a very fast "click click click" sound coming from in front of you. Not very loud but the loudest sound in the car when music is off.
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      10-20-2007, 12:23 PM   #31
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If I can't run V2 at 100%, is it the same as V1.47

It sounds like for us guys in California who have crappy 91 octane gas, we can't run the V2 100% across the board due to detonation. If that's the case, is there a benefit to the V2 over V1.47?
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      10-20-2007, 12:27 PM   #32
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Quote:
Originally Posted by onefastdoc View Post
It sounds like for us guys in California who have crappy 91 octane gas, we can't run the V2 100% across the board due to detonation. If that's the case, is there a benefit to the V2 over V1.47?
You've at least got control over both solenoids with V2 plus the tune is improved. The boost should be much more responsive and you'll still get more power than before due to the tune.
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      10-20-2007, 12:31 PM   #33
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To the op,I would open up the exh and see if that helps out a bit.It looks like your running the v2 with the stock system.

Also what happens when we put in 110% across the board,will v2 take adv if we are running 100oct?
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      10-20-2007, 12:31 PM   #34
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Quote:
Originally Posted by zenmaster View Post
I don't think so. The engine is designed to run on the threshhold of knock for efficiency and power purposes. Maybe if it had to retard timing a great deal in a small amount of time perhaps. - edit: just saw your change.
Sorry about that, I figured I should write out what I was thinking in my head.
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      10-20-2007, 12:39 PM   #35
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Quote:
Originally Posted by onefastdoc View Post
It sounds like for us guys in California who have crappy 91 octane gas, we can't run the V2 100% across the board due to detonation. If that's the case, is there a benefit to the V2 over V1.47?
Of course, you get the full V2 top power. Shiv's predefined settings feel perfect with the car, stronger than v1.47. Just don't max out the map's torque, that's all.

I see no reason why this great, high reving engine has to feel like the diesel of a dreamliner .
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      10-20-2007, 12:50 PM   #36
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I see no reason why this great, high reving engine has to feel like the diesel of a dreamliner .[/QUOTE]
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      10-20-2007, 01:28 PM   #37
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what torque settings are recommended though for 91 octane?
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      10-20-2007, 02:01 PM   #38
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Quote:
Originally Posted by mayno View Post
what torque settings are recommended though for 91 octane?
The recommend settings are the defaults.
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      10-20-2007, 02:13 PM   #39
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Quote:
Originally Posted by zenmaster View Post
Even v1 will pull easily. There is not a single stock M6 on drag times that has gotten a better 1/8 mi time. The situation changes after about 110MPH where the M6 will pull easily on the v2 335i.
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      10-20-2007, 02:13 PM   #40
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So has anyone on 91 been running higher than the defaults without problems?
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      10-20-2007, 02:46 PM   #41
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what is the default setting for V2 with 91 oct...thanks
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      10-20-2007, 02:51 PM   #42
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Im starting to get freaked out by having my setting at 100% across the board from you guys...
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      10-20-2007, 02:58 PM   #43
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Quote:
Originally Posted by jtecnik View Post
what is the default setting for V2 with 91 oct...thanks
There is currently only one set of torque-output settings, regardless of octane. It's:
"94.902" at 2500rpm,
"90.1961" at 3000, 3500, 4000
"92.1569" at 4500
"94.902" at 5000
"96.8627" at 5500
"100%" to redline
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      10-20-2007, 03:56 PM   #44
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Quote:
Originally Posted by zenmaster View Post
Even v1 will pull easily. There is not a single stock M6 on drag times that has gotten a better 1/8 mi time. The situation changes after about 110MPH where the M6 will pull easily on the v2 335i.
I don't think I have seen any V1.47 pull easily on an m6 up to 100 but i have seen them edge it... I don't foresee an m6 pulling easily on a v2 after 110 but I guess we will have to wait and see the videos!
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