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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 03-29-2014, 06:20 PM
matreyia matreyia is offline
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California Octane Max 91 vs. 93

Hi Everyone,

I shipped my 335i convertible to California from Texas and have been driving on 91 octane since January. These are the things I noticed since switching.

1. Then engine runs hotter, even though the L.A. weather is on average 10-20 cooler than Texas. It does not matter if it's traffic or freeway...it will run 250. In Texas with 93 Octane it never approached that temperature unless I was hammering away or stuck in summer 100 traffic jams.

2. The engine feels like it has to work a little harder, and it takes more effort to make the tires skid.

I've added a Dinan Cold Air Intake and a Dinan Intercooler and M Performance Exhaust to my previous set up which was software only Dinan S2. These additions have made drastic increases to performance while I been here...so I can't even imagine what it would feel like in Texas with 93 octane back in the tank!

Anyways, these are my observations in case anyone had any similar situation and ever wondered the effects would be.

Cheers.

VT
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  #2  
Old 03-30-2014, 06:19 PM
sptt144 sptt144 is offline
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I have a 335i and live here in Cal. Only when the temps get into the 90s do I see the oil temp on 250. Not sure, but are you in stop and go traffic more here?

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  #3  
Old 03-30-2014, 06:38 PM
ashewb ashewb is offline
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my condolences on your move. btw, the bluebonnets are looking good this year,
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  #4  
Old 03-30-2014, 07:01 PM
matreyia matreyia is offline
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Quote:
Originally Posted by sptt144 View Post
I have a 335i and live here in Cal. Only when the temps get into the 90s do I see the oil temp on 250. Not sure, but are you in stop and go traffic more here?

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I suppose I am stuck in traffic and going up lots of hills more here.
But, after Dinan intake, Exhaust, and intercooler added...engine cools down super fast at red lights. Whew!

VT
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  #5  
Old 03-30-2014, 07:41 PM
sptt144 sptt144 is offline
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You're golden then!

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  #6  
Old 03-31-2014, 03:18 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by matreyia View Post
Hi Everyone,

I shipped my 335i convertible to California from Texas and have been driving on 91 octane since January. These are the things I noticed since switching.

1. Then engine runs hotter, even though the L.A. weather is on average 10-20 cooler than Texas. It does not matter if it's traffic or freeway...it will run 250. In Texas with 93 Octane it never approached that temperature unless I was hammering away or stuck in summer 100 traffic jams.

2. The engine feels like it has to work a little harder, and it takes more effort to make the tires skid.

I've added a Dinan Cold Air Intake and a Dinan Intercooler and M Performance Exhaust to my previous set up which was software only Dinan S2. These additions have made drastic increases to performance while I been here...so I can't even imagine what it would feel like in Texas with 93 octane back in the tank!

Anyways, these are my observations in case anyone had any similar situation and ever wondered the effects would be.

You'll do better with JB4 - BMS hop & skip over in Simi Valley - $500

Intercooler's useful as temps rise but....not hot yet.

CAI's for your pride - not doing much for performance.

You may have an issue - N54 hard pressed to hit 250 unless hammered. Or, adaptation to new environ not complete. Look into BMS Meth for much better power, and limited slip diff to be puttin' it down....w/o LSD you're way short of full benefit, power mods!
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  #7  
Old 03-31-2014, 07:11 AM
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need4speed need4speed is online now
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Why does Cali max out at 91? How much of a difference can it make to what ever they are trying to "fix"? N4S
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  #8  
Old 03-31-2014, 07:31 AM
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CALWATERBOY CALWATERBOY is offline
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Originally Posted by need4speed View Post
Why does Cali max out at 91? How much of a difference can it make to what ever they are trying to "fix"? N4S

Environmentalism, the political control of choice. Damn Socialists. I say we put 'em in camps, to produce to the limit of their ability, but take only according to Management defined need. Yes. Justice!
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  #9  
Old 03-31-2014, 07:46 AM
wilt wilt is offline
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Originally Posted by need4speed View Post
Why does Cali max out at 91? How much of a difference can it make to what ever they are trying to "fix"? N4S
The issue, I have read, is that different crudes have different potential for Octane. Some crude is only good for making relatively low octane, e.g. 85. So some high Octane stuff has to be added in order to boost the low grade 85 up to a passable 87. But there is only a certain limited amount of higher octane stuff which can be produced. So in order to enrich the cr*p to a reasonable level, the higher octane stuff gets consumed just for that purpose, making high grade gas (e.g. 93-95) not available. Also, there is California's decision to ban the gasoline additive MTBE, methyl tertiary butyl ether, both for emissions reasons and also because MTBE was contaminating water supplies, making higher octanes more expensive to produced.
(I'm merely echoing what I have read.)

Last edited by wilt; 03-31-2014 at 07:54 AM.
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  #10  
Old 03-31-2014, 07:58 AM
matreyia matreyia is offline
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Quote:
Originally Posted by CALWATERBOY View Post
You'll do better with JB4 - BMS hop & skip over in Simi Valley - $500

Intercooler's useful as temps rise but....not hot yet.

CAI's for your pride - not doing much for performance.

You may have an issue - N54 hard pressed to hit 250 unless hammered. Or, adaptation to new environ not complete. Look into BMS Meth for much better power, and limited slip diff to be puttin' it down....w/o LSD you're way short of full benefit, power mods!
1. Not interested in JB4, too many issues to deal with and also warranty is voided.
2. CAI does indeed improve the performance to a noticeable degree. Why people keep say this is beyond me. I used to think it would not add much, until I added it and saw both throttle improvement and more HP near red line. I didn't think it would be noticeable but it was and it was a nice surprise. If you don't have a Dinan CAI, then it would be better to reserved judgement. I do not know about AFE intakes, but I do know that the Dinan unit works--even better than Dinan claims in my personal experience.
3. Intercooler keeps the engine running ten degrees cooler in my experience and the turbos are more stable, pull more consistently to red line...after adding it, I noticed the car wanted to leap forward even driving normal...feels "eager" sooner.
4. I do hammer the car and I do get into traffic alot in LA
5. Not interested in Meth, too much to keep track of.

That's about all I can think of for now.

Happy Motoring,
VT
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  #11  
Old 03-31-2014, 08:07 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by matreyia View Post
1. Not interested in JB4, too many issues to deal with and also warranty is voided.

Bear in mind that BMW's warranty is voided when Dinan's added. They sub their own.
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  #12  
Old 03-31-2014, 08:14 AM
matreyia matreyia is offline
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Quote:
Originally Posted by CALWATERBOY View Post
Bear in mind that BMW's warranty is voided when Dinan's added. They sub their own.
Actually you are wrong.

I had my S2 updated at the BMW Dealership in Austin, TX.
We had a long meeting over the details.

BMW warranty remains intact and Dinan is responsible for any repairs caused by their upgrades.
Their relationship ended a while back, but this still stands.

Please stop spreading this false information.

Also, the JB4 is questionable when it comes to details such as the recalibration of other elements of the car such as the water pump to account for increased boost etc...

I've had the update for a year and not one single problem...knock on wood.

VT
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  #13  
Old 03-31-2014, 08:16 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by matreyia View Post
3. Intercooler keeps the engine running ten degrees cooler in my experience and the turbos are more stable, pull more consistently to red line...after adding it, I noticed the car wanted to leap forward even driving normal...feels "eager" sooner.

In cooler weather that may be due to the tune. The truth is: FMIC allows power as if weather were cooler - does not change engine capability.

BUT....tune or FMIC....how come you're running hot? Gotta guess adaptation again....give it time.
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  #14  
Old 03-31-2014, 08:20 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by matreyia View Post
Actually you are wrong.

I had my S2 updated at the BMW Dealership in Austin, TX.
We had a long meeting over the details.

BMW warranty remains intact and Dinan is responsible for any repairs caused by their upgrades.
Their relationship ended a while back, but this still stands.

Please stop spreading this false information.

Interesting! Give us some docs on this....not a dealer's agreement with you, but BMW corporate committing to uphold their warranty with Dinan tune installed. Nope, can't accept talk.
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  #15  
Old 03-31-2014, 08:54 AM
matreyia matreyia is offline
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Originally Posted by CALWATERBOY View Post
Interesting! Give us some docs on this....not a dealer's agreement with you, but BMW corporate committing to uphold their warranty with Dinan tune installed. Nope, can't accept talk.
It's in my warranty contract. There wasn't just a discussion out of thin air. They specifically pointed out and explained by line what the stipulations were. Which were all reasonable. In the end, I don't care and am not responsible for proving anything, if there is a problem, I let Dinan and BMW duke it out and someone will take care of it. Whether it's BMW or Dinan is irrelevant to me as long as I have both sides covered.

VT
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  #16  
Old 03-31-2014, 08:55 AM
matreyia matreyia is offline
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Originally Posted by CALWATERBOY View Post
In cooler weather that may be due to the tune. The truth is: FMIC allows power as if weather were cooler - does not change engine capability.

BUT....tune or FMIC....how come you're running hot? Gotta guess adaptation again....give it time.
Most likely, adaptation. Seems to get better by day.
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  #17  
Old 03-31-2014, 09:27 AM
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CALWATERBOY CALWATERBOY is offline
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Originally Posted by matreyia View Post
It's in my warranty contract. There wasn't just a discussion out of thin air. They specifically pointed out and explained by line what the stipulations were. Which were all reasonable. In the end, I don't care and am not responsible for proving anything, if there is a problem, I let Dinan and BMW duke it out and someone will take care of it. Whether it's BMW or Dinan is irrelevant to me as long as I have both sides covered.

OK, that's BMW cancelling warranty coverage for anything - that's anything - they pin on Dinan. Sorry guy - BMW coverage doesn't apply to Dinan mods.
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  #18  
Old 03-31-2014, 10:32 AM
hondo402000 hondo402000 is offline
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well hopefully you wont have a problem, When you have a warranty claim and BMW says its their responsibility and Dinan says its BMW problem, guess whos problem it really becomes? Yep your problem
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Old 03-31-2014, 10:40 AM
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Mark K Mark K is online now
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Quote:
Originally Posted by wilt View Post
The issue, I have read, is that different crudes have different potential for Octane. Some crude is only good for making relatively low octane, e.g. 85. So some high Octane stuff has to be added in order to boost the low grade 85 up to a passable 87. But there is only a certain limited amount of higher octane stuff which can be produced. So in order to enrich the cr*p to a reasonable level, the higher octane stuff gets consumed just for that purpose, making high grade gas (e.g. 93-95) not available. Also, there is California's decision to ban the gasoline additive MTBE, methyl tertiary butyl ether, both for emissions reasons and also because MTBE was contaminating water supplies, making higher octanes more expensive to produced.
(I'm merely echoing what I have read.)
I understand you arw not the author. Nonetheless, right now I'm in Po river valley (very bad for air quality) where 50+% of cars are diesels, they have no clue what is less than 91 octane gas ... and I smell manure everywhere and breathe fine. So does everybody else.

Yes, LA basin has some characteristics particular to that region, but if CA environmentalist want ro come out and say they are so special that no other environment on Earth is minimally comparable and pop density is nowhere even close to LA basin ... yeah, I want them to come out and say that verbatim.

This octane/ethanol bull**** has got to stop.

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Old 03-31-2014, 10:40 AM
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I understand you are not the author. Nonetheless, right now I'm in Po river valley (very bad for air quality) where 50+% of cars are diesels, they have no clue what is less than 91 octane gas ... and I smell manure everywhere and breathe fine. So does everybody else.

Yes, LA basin has some characteristics particular to that region, but if CA environmentalist want ro come out and say they are so special that no other environment on Earth is minimally comparable and pop density is nowhere even close to LA basin ... yeah, I want them to come out and say that verbatim.

This octane/ethanol bull**** has got to stop.


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  #21  
Old 03-31-2014, 12:55 PM
matreyia matreyia is offline
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Originally Posted by CALWATERBOY View Post
OK, that's BMW cancelling warranty coverage for anything - that's anything - they pin on Dinan. Sorry guy - BMW coverage doesn't apply to Dinan mods.
What part of the conversation did you miss?
At no time did I say BMW coverage applies to Dinan. At no time. Please read more carefully and/or stop misrepresenting the situation, especially if you have no personal experience with it.

That is all.
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  #22  
Old 03-31-2014, 01:03 PM
matreyia matreyia is offline
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well hopefully you wont have a problem, When you have a warranty claim and BMW says its their responsibility and Dinan says its BMW problem, guess whos problem it really becomes? Yep your problem
I disagree. As I said, it will be one of them, not me. It is their responsibility to prove that it's not their problem. It is not my responsibility to prove that I did not cause any issues. This is direct from my lawyer.

Were it incumbent upon me to prove that I didn't mess up the car, that would be like saying, "prove you didn't mess up your car under our warranty" even in the case that I did not do any modifications - this would be absurd.

I don't track the car. The ECU records all driving data, there is no guessing on my part. My driving habits are totally transparent and so it is incumbent upon BMW or Dinan to prove or disprove any issue they may have. Let them sort it out. And this has happened before, many times to Dinan customers...and in every case, either BMW or Dinan has taken care of the problem(s) - even after the so-called dissolution of their relationship.

So hopefully, there won't be any problems, but if so, I guess I will find out and let everyone know.
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  #23  
Old 03-31-2014, 03:29 PM
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tturedraider tturedraider is offline
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Quote:
Originally Posted by matreyia View Post
Hi Everyone,

I shipped my 335i convertible to California from Texas and have been driving on 91 octane since January. These are the things I noticed since switching.

1. Then engine runs hotter, even though the L.A. weather is on average 10-20 cooler than Texas. It does not matter if it's traffic or freeway...it will run 250. In Texas with 93 Octane it never approached that temperature unless I was hammering away or stuck in summer 100 traffic jams.

2. The engine feels like it has to work a little harder, and it takes more effort to make the tires skid.

I've added a Dinan Cold Air Intake and a Dinan Intercooler and M Performance Exhaust to my previous set up which was software only Dinan S2. These additions have made drastic increases to performance while I been here...so I can't even imagine what it would feel like in Texas with 93 octane back in the tank!

Anyways, these are my observations in case anyone had any similar situation and ever wondered the effects would be.

Cheers.

VT
Sorry, this is all placebo effect. The motor is designed to run on 91 octane and there's no way running 93 octane in Texas was giving the benefits you're attributing to it.
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  #24  
Old 03-31-2014, 03:43 PM
matreyia matreyia is offline
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Originally Posted by tturedraider View Post
Sorry, this is all placebo effect. The motor is designed to run on 91 octane and there's no way running 93 octane in Texas was giving the benefits you're attributing to it.
Placebo depends on people who expect it to happen. I did not expect any change, nor was I thinking about it. The fact that it brought my attention to the performance changes attests to the reality of the differences between the two octane levels.

So you are welcome to think what you like. Although from your statements, it does not appear that you have been in my situation for any length of time to notice anything...and so in your mind, it must not be true.

The same as the people who are all telling me there are no gains to be made with my Dinan CAI. Very funny that my personal experiences contradict their non-personal experiences.

VT
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  #25  
Old 03-31-2014, 04:27 PM
ddeliber ddeliber is online now
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Quote:
Originally Posted by matreyia View Post
Placebo depends on people who expect it to happen. I did not expect any change, nor was I thinking about it. The fact that it brought my attention to the performance changes attests to the reality of the differences between the two octane levels.

So you are welcome to think what you like. Although from your statements, it does not appear that you have been in my situation for any length of time to notice anything...and so in your mind, it must not be true.

The same as the people who are all telling me there are no gains to be made with my Dinan CAI. Very funny that my personal experiences contradict their non-personal experiences.

VT
Just out of curiosity, did you add the CAI with the other mods or just the intake and added the FMIC and exhaust at different times?
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