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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Tracking, Autocrossing, Dragstrip, Driving Techniques > brake boost!



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      08-23-2007, 03:53 AM   #1
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brake boost!

Brake boost.. all I have to say is that for those with 335i's you should try it if you already haven't tried! it'll make you jibber .....

EDIT------------------
ok after posting I was thinking.. what if they dont know what brake boost is?? its simple brake boosting is braking while your car is in motion ((braking about half way) WARNING** this will wear out your brake pads REAL QUICKLY), reving your engine at about 4-5k RPM, this is to spool your turbo(s).. once the turbo(s) are fully spooled then you let go of the brake and you take off like a rocket... only turbo'ed cars can brake boost because well.. you get the point... but here is a vid for those that need a visual. the White STI is the one brake boosting... enjoy! and please be responsible drivers and practice on a safe road that you are familiar with

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      08-23-2007, 04:52 AM   #2
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Didn't know what brake boost was, but I do now!!
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      08-23-2007, 06:17 AM   #3
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That's real interesting.
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      08-23-2007, 09:28 AM   #4
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Most retarded thing ever. OP would probably do a neutral drop if they had a slushbox.
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      08-23-2007, 11:14 AM   #5
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Quote:
Originally Posted by HyperM3 View Post
Most retarded thing ever. OP would probably do a neutral drop if they had a slushbox.
why is this retarded? brake boosting is one of the main advantages in turbo cars esp. on highways i.e. if you were to race that is.. neutral drop??? wtf
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      08-23-2007, 11:18 AM   #6
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Quote:
Originally Posted by asdflkijd View Post
why is this retarded? brake boosting is one of the main advantages in turbo cars esp. on highways i.e. if you were to race that is.. neutral drop??? wtf
I think you need to take a step back and learn about your car. Peak tq happens around 1800rpm, not 4-5k rpm. Thats not even where peak hp is either. Instead of destroying your brakes, how about you destroy your clutch and just dump that at 4k rather than stepping on the brakes(which is counter productive being that BMW brakes are fantastic and will actually stop you when pressed halfway).

Secondly, youre apparently very young if you dont know what a neutral drop is.
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      08-23-2007, 11:23 AM   #7
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you only need to brake boost at 2k rpms if anything... but 4k??!!?!
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      08-23-2007, 11:23 AM   #8
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sounds a bit silly, if your racing from a rolling start you better of jus tin a high gear revving, holding the brake is no good, your friends may get half second head start etc
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      08-23-2007, 11:24 AM   #9
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Quote:
Originally Posted by asdflkijd View Post
why is this retarded? brake boosting is one of the main advantages in turbo cars esp. on highways i.e. if you were to race that is.. neutral drop??? wtf
this forum is really going to shit.

btw, everything is about racing dont you know??? we love to race around and brake boost
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      08-23-2007, 11:25 AM   #10
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Quote:
Originally Posted by HyperM3 View Post
I think you need to take a step back and learn about your car. Peak tq happens around 1800rpm, not 4-5k rpm. Thats not even where peak hp is either. Instead of destroying your brakes, how about you destroy your clutch and just dump that at 4k rather than stepping on the brakes(which is counter productive being that BMW brakes are fantastic and will actually stop you when pressed halfway).

Secondly, youre apparently very young if you dont know what a neutral drop is.
i understand that the car follows through 300tq around 1800rpm which is very very good.. BUT if you know anything about turboed cars.. then you would know that the turbo(s) need to be spooled in order to achieve maximum power... PLEASE correct me if im wrong. and btw yes, im 19
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      08-23-2007, 11:26 AM   #11
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its not something that you do everytime you go on the highway,... if you do your an idiot.. just like how you wouldnt turn off DTS and e-brake around every corner....

this thread was kind of a FYI, not a signal to start shooting
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      08-23-2007, 11:27 AM   #12
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Quote:
Originally Posted by asdflkijd View Post
Brake boost.. all I have to say is that for those with 335i's you should try it if you already haven't tried! it'll make you jibber .....

EDIT------------------
ok after posting I was thinking.. what if they dont know what brake boost is?? its simple brake boosting is braking while your car is in motion ((braking about half way) WARNING** this will wear out your brake pads REAL QUICKLY), reving your engine at about 4-5k RPM, this is to spool your turbo(s).. once the turbo(s) are fully spooled then you let go of the brake and you take off like a rocket... only turbo'ed cars can brake boost because well.. you get the point... but here is a vid for those that need a visual. the White STI is the one brake boosting... enjoy! and please be responsible drivers and practice on a safe road that you are familiar with

What if we have auto, how do we rev to 4K RPM???????
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      08-23-2007, 11:28 AM   #13
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Quote:
Originally Posted by ///AFRO View Post
What if we have auto, how do we rev to 4K RPM???????
mmmm.. DS?
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      08-23-2007, 11:43 AM   #14
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Quote:
Originally Posted by NaViT View Post
you only need to brake boost at 2k rpms if anything... but 4k??!!?!
your turbos arent fully spooled till 3,4k
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      08-23-2007, 11:49 AM   #15
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Quote:
Originally Posted by HyperM3 View Post
Most retarded thing ever. OP would probably do a neutral drop if they had a slushbox.
umm... this is actually a very common strategy for racers going around corners, its kind of dumb to do in a straight line though which i think hes suggesting
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      08-23-2007, 11:52 AM   #16
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Quote:
Originally Posted by asdflkijd View Post
i understand that the car follows through 300tq around 1800rpm which is very very good.. BUT if you know anything about turboed cars.. then you would know that the turbo(s) need to be spooled in order to achieve maximum power... PLEASE correct me if im wrong. and btw yes, im 19
he mentioned about are turbos spoiling at such a low rpms probably to indicate that they spool in all of about 2 seconds, this technique is better for more laggy cars, could still shave some time off, but it is kind of dumb to use in a straight line...
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      08-23-2007, 11:55 AM   #17
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300 tq available from 1400-5000 rpms in the 335i.
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      08-23-2007, 12:00 PM   #18
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Quote:
Originally Posted by asdflkijd View Post
your turbos arent fully spooled till 3,4k
And your source for this fiction?

Quote:
Originally Posted by 533ogetnom View Post
umm... this is actually a very common strategy for racers going around corners, its kind of dumb to do in a straight line though which i think hes suggesting
AKA-Throttle oversteer.
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      08-23-2007, 12:04 PM   #19
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Quote:
Originally Posted by HyperM3 View Post

AKA-Throttle oversteer.
no just applying throttle lightly to hold boost while braking, unless thats what that is, but that just sounds like a fancy name for drifting
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      08-23-2007, 12:04 PM   #20
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How about just shift into 2-3 gear and have you rpms high before you take off, no need to use brakes
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      08-23-2007, 12:05 PM   #21
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everybody's gotta hate. I would never do this to my car. I don't even have to watch the video to know this, but I'm not hating either. Bunch of spazzes around here that live to put people down. That is why this forum is going to shit.
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      08-23-2007, 12:06 PM   #22
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Quote:
Originally Posted by AndreyATC View Post
How about just sit in 2-3 gear and have you rpms high, no need to use brakes
probably because that wont spool the turbos, he was talking about racing on the highway i guess, before you hit the throttle even if your at 5k you wont be boosting all the way, but in that situation youll have ful boost in all of 2 seconds which makes this kinda dumb
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