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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 > SSTT with 100 octane....



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      02-26-2008, 10:44 AM   #1
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SSTT with 100 octane....

Was at the track yesterday...Laguna Seca...and was just toolin around. I had never put any 100 octane in my car in tuned form...only when it was stock. And when it was stock..I didnt feel any difference. However, on the track yesterday...with about 50-70% 100 octane...(up from 91) I could definitely feel better pull...even when the car was running at oil temps of 270-280 degrees. I am happy with the fact that some 100 octane helps the SSTT. That is all....back to your regularly scheduled programming.
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      02-26-2008, 12:09 PM   #2
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when I had the sstt I always ran 93 and a few times 94 and the car was very powerful. not as powerful as the jb2h though. Im actually going back to sstt. Im sick of going into the ecu.
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      02-26-2008, 12:30 PM   #3
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not as powerful as the jb2h though
How about just the JB2? I'm curious to your opinion as you have had both?
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      02-26-2008, 12:31 PM   #4
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SSTT ftw!!!
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      02-26-2008, 12:35 PM   #5
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Quote:
Originally Posted by Corky71 View Post
How about just the JB2? I'm curious to your opinion as you have had both?
The sstt has more grunt down low but after that the jb2 is a lot more powerful from my experience. the jb2h is very strong compared to sstt. I just hate going into the ecu and thats why I might switch back. just waiting for a good deal to come up.
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      02-26-2008, 12:40 PM   #6
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Originally Posted by fotios330i View Post
The sstt has more grunt down low but after that the jb2 is a lot more powerful from my experience. the jb2h is very strong compared to sstt. I just hate going into the ecu and thats why I might switch back. just waiting for a good deal to come up.

Thanks. Pretty much the same as what i've been hearing. Don't forget SSTT stage 2 should be coming pretty soon as well which should get it into that JB2H range at the very least.
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      02-26-2008, 02:49 PM   #7
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SSTT with 93 octane and loving it.
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      02-26-2008, 03:14 PM   #8
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heck ya!
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      02-26-2008, 04:03 PM   #9
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Originally Posted by 5sokol335icoupe View Post
SSTT ftw!!!
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      02-26-2008, 04:53 PM   #10
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Thanks for the report! That is similar to my experience with the SSTT and 100 octane on the track!
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      02-26-2008, 05:14 PM   #11
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Originally Posted by S4to335 View Post
...even when the car was running at oil temps of 270-280 degrees.
Do you have the factory oil cooler?
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      02-26-2008, 05:46 PM   #12
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I found a place kinda near home that has 100 octane at the pump. Kinda pricey $7 a gallon, but I want to see how the car feels with it. Is it bad to fill up a whole tank of 100 octane?
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      02-26-2008, 07:43 PM   #13
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Quote:
Originally Posted by Mattscott View Post
I found a place kinda near home that has 100 octane at the pump. Kinda pricey $7 a gallon, but I want to see how the car feels with it. Is it bad to fill up a whole tank of 100 octane?
Not bad at all (except for your wallet). Just make sure it is the 100 unleaded...
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      02-26-2008, 08:46 PM   #14
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Originally Posted by White05X3 View Post
Not bad at all (except for your wallet). Just make sure it is the 100 unleaded...
okay I'm taking your word for it. I'm filling up a full tank of 100 unleaded octane
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      02-27-2008, 02:06 AM   #15
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Originally Posted by cbad335 View Post
Do you have the factory oil cooler?
Yes I do..mine is a manual transmission car...with sport package..built in week 7 of 2007.
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      02-27-2008, 02:08 AM   #16
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Originally Posted by Mattscott View Post
okay I'm taking your word for it. I'm filling up a full tank of 100 unleaded octane

Yeah..its fine for once in a while..but you dont want to fill up all the time with 100 octane..or your cats will konk out much earlier than they should...
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      02-27-2008, 02:12 AM   #17
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What was going on at laguna anything special?
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      02-27-2008, 02:35 AM   #18
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I just filled up my tank with 100 octane. $103 dollars later.

Anyways, first imperssion, the car feels SMOOTH at idle.

The first time I floored it I didnt notice much of a difference, I still had about 1 or 2 gallons of 91.

On the freeway the car got up to 150 QUICK! after about 20 miles or so I got off the freeway. The car feels noticably faster not crazy faster but a noticable amount. The sound is great though. WOT you can hear the turbo spooling.

Downside is I've driven about 40 miles and used almost a quarter of a tank.
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      02-27-2008, 06:24 PM   #19
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Originally Posted by S4to335 View Post
even when the car was running at oil temps of 270-280 degrees.
Do you have the stock cooling system?
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      02-27-2008, 08:56 PM   #20
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Quote:
Originally Posted by Mattscott View Post
I just filled up my tank with 100 octane. $103 dollars later.

Anyways, first imperssion, the car feels SMOOTH at idle.

The first time I floored it I didnt notice much of a difference, I still had about 1 or 2 gallons of 91.

On the freeway the car got up to 150 QUICK! after about 20 miles or so I got off the freeway. The car feels noticably faster not crazy faster but a noticable amount. The sound is great though. WOT you can hear the turbo spooling.

Downside is I've driven about 40 miles and used almost a quarter of a tank.


lma0o nice story, that a hefty bill tho.
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      02-27-2008, 09:45 PM   #21
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Quote:
Originally Posted by 5sokol335icoupe View Post
lma0o nice story, that a hefty bill tho.
Yeah, a little more then double what it usually costs. It's worth the experience though.
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      02-28-2008, 09:13 AM   #22
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Originally Posted by Mattscott View Post
Yeah, a little more then double what it usually costs. It's worth the experience though.
As I said...the only danger is to your wallet! If you are doing a track day you need to add the cost of gas to your anticipated cost. Some track days the fuel is more expensive than the enrollment fee!
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