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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 > 20.5 psi boost?



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      09-18-2010, 09:29 PM   #1
caradd
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20.5 psi boost?

I did a datalog today with my procede V4. I noticed that I hit a peak boost of 20.5psi.

Is that normal?

Car is stock except for procede V4 and 93 octane.

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      09-18-2010, 09:41 PM   #2
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I think that little spike is normal right after you let off the throttle to shift. You're not actually on the accelerator at that point (check your data log for throttle input at that same point in time) so you're not actually boosting 20.5. Of course, I'm a novice, so that may be wrong.
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      09-18-2010, 09:43 PM   #3
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Boost spike at shift, normal.
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      09-18-2010, 10:13 PM   #4
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+1.
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      09-18-2010, 10:18 PM   #5
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Thanks guys

Another questions what is the difference between Throttle and CAN DBW Throttle?
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      09-18-2010, 10:34 PM   #6
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Throttle is applied throttle (right foot). CAN drive by wire throttle is the actual blade opening.
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      09-18-2010, 10:36 PM   #7
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Quote:
Originally Posted by caradd View Post
Thanks guys

Another questions what is the difference between Throttle and CAN DBW Throttle?
Throttle is the gas pedal position. ...can DBW throttle Is your throttle blade position. It will be different from throttle position in some cases, such as traction control is intervening
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      09-19-2010, 12:00 AM   #8
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Thanks again!
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