Sprint Booster Issue
Thread Starter
Members
Joined: Nov 2009
Posts: 9
Likes: 0
I just installed the Sprint Booster for my 07 550i and have been driving it for a couple weeks now, and I noticed something odd about my gear shifting.
I noticed that whenever I floored the pedal, the RPM will rev to the max, roaring very loud, stall there for a couple seconds, and finally switch to the next gear. During all that time, the car is jurking as it loses and gains power at the high rpm.
I dont drive a manual transmission so i dont know much about when exactly the gears should shift, but I find this really weird.
Is that normal, is my SB a dud, did I install incorrectly? Maybe I should reset my cars memory?
Honestly, I dont really see any other difference than the odd shifting times, and maybe a quicker response only when on Sport Mode.
Any feedback would be great. Thanks!
I noticed that whenever I floored the pedal, the RPM will rev to the max, roaring very loud, stall there for a couple seconds, and finally switch to the next gear. During all that time, the car is jurking as it loses and gains power at the high rpm.
I dont drive a manual transmission so i dont know much about when exactly the gears should shift, but I find this really weird.
Is that normal, is my SB a dud, did I install incorrectly? Maybe I should reset my cars memory?
Honestly, I dont really see any other difference than the odd shifting times, and maybe a quicker response only when on Sport Mode.
Any feedback would be great. Thanks!
Contributors
Joined: Feb 2006
Posts: 4,186
Likes: 2
From: UK
My Ride: Jan 2006 E63 650i Sport
.
Options:
Sport version (includes: sport-seats, sport-suspension, M-Sport steering wheel, Anthracite headliner, Shaddow Line), Saphire Black, Black Dakota Leather, Anthracite Maple Wood trim, Steptronic Auto, Xenons, NAV-Professional with Voice Control, TV, CD-Changer, Bluetooth, Logic7, Head-up Display, Comfort Access, Seat Heating front, Auto Dimming & Folding Mirrors, Extended Auto Air Conditioning, PDC.
.
Mods:
Spacers 5mm front & 15mm rear
.
Wheels:
20" Alpina Softline (Classic) with Dunlop Sport Maxx non-RFT (255/35/20 & 285/30/20)
did you reset the Throttle (holding down gas pedal for 10sec) and or reset the Steptronic gearbox (holding down gas pedal for 25seconds) ?
I always do this when I install or remove the Sprint Booster, just to calibrate it all again.
I always do this when I install or remove the Sprint Booster, just to calibrate it all again.
Contributors
Joined: Aug 2008
Posts: 7,421
Likes: 0
From: Originally from Koeln, Deutschland. Enjoying it in Bonita Springs, Florida Now :)
Well, first of all, try removing the SB and see if the car still acts the same....
Did you get the right sprint booster? The make them for Manual and Automatic.
Did you get the right sprint booster? The make them for Manual and Automatic.
Contributors
Joined: Dec 2007
Posts: 5,972
Likes: 0
From: The State of Southern NJ!
That is not "normal" even for SB auto - mine is crisp and quick. I'd pull the SB and if the problem persists you may be on the verge of a transmission problem.
Are you still under warranty?
Are you still under warranty?
Contributors
Joined: Aug 2008
Posts: 7,421
Likes: 0
From: Originally from Koeln, Deutschland. Enjoying it in Bonita Springs, Florida Now :)
Originally Posted by luigi524td' post='1087342' date='Jan 9 2010, 05:46 PM
Are you still under warranty?
Thread
Thread Starter
Forum
Replies
Last Post
DavaiLave
E60 Discussion
13
Aug 2, 2022 02:16 AM
thesalboy
Other BMW Models
2
Apr 8, 2015 09:13 AM