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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 > I increased my JB+ but it doesn't feel faster...



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      09-08-2009, 11:47 PM   #1
persian54
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I increased my JB+ but it doesn't feel faster...

On Sunday, I increased my JB+ from 50% to about 75%, but it doesn't feel much, if any, faster....

This shouldn't be normal.

I've driven roughly 100 miles since then... is this adequate time for it to adapt?

Thanks in advance.
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      09-08-2009, 11:54 PM   #2
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You should notice it right away. I notice it much less out here on 91oct. On 93oct its an extra little tickle in your balls. 91 octane sucks.
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      09-09-2009, 12:10 AM   #3
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i only got 91 :/
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      09-09-2009, 12:13 AM   #4
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I would definitely not be sensitive enough to feel the difference between 50% and 100%. I really have a tough time in any car while driving to feel the power differences. Some people are just like that I guess.
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      09-09-2009, 12:17 AM   #5
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Quote:
Originally Posted by JayKay335i View Post
On 93oct its an extra little tickle in your balls. 91 octane sucks.
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      09-09-2009, 12:18 AM   #6
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i should prly just bite the bullet and pay terry the 315 upgrade fee :/
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      09-09-2009, 01:20 AM   #7
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Go for the jb3. I just moved to the west from NY and theres definitely a difference between 50 and 75 when I was running 93 and it was nice and cold. I put it up against a buddies tuned A4 and a tuned up GLI. Stock I was just a bit in front of them. JB at 50 I pulled nicely and at 75 I just raped them.
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