Sprint Booster
08-07-2009, 07:56 PM
#1
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I'm seriously considering buying a sprint booster and I was just wondering what experiences you have had. Both positive and negative experiences are welcome. This would really help me make a final decision.
And I know that almost all of you guys are going to say "Go ahead and get it. It's awesome!", but I need something a little more constructive than that.
Thanks in advance for the help.
And I know that almost all of you guys are going to say "Go ahead and get it. It's awesome!", but I need something a little more constructive than that.
Thanks in advance for the help.
08-07-2009, 08:20 PM
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I have a 2009 550i with Steptronic and have had the SB for less than a month. I have driven with the SB in all sorts of conditions. I do not believe that the SB totally eliminates the throttle lag between the application of WOT and the delivery of full power from the engine.
The SB does shorten the lag time and once power comes on, it comes on much stronger. In other words, it makes the gas pedal much touchier and more responsive. The car feels more powerful (it is not more powerful as SB does not increase the engine's horsepower or torque) because at the same level of throttle application, the SB-equipped car will provide more power. If you value a smooth throttle tip in (I don't), this may not be the mod for you as it is much easier to have jerky acceleration with SB. You can smooth it out with effort and learning to adapt to the SB.
The SB does shorten the lag time and once power comes on, it comes on much stronger. In other words, it makes the gas pedal much touchier and more responsive. The car feels more powerful (it is not more powerful as SB does not increase the engine's horsepower or torque) because at the same level of throttle application, the SB-equipped car will provide more power. If you value a smooth throttle tip in (I don't), this may not be the mod for you as it is much easier to have jerky acceleration with SB. You can smooth it out with effort and learning to adapt to the SB.
08-07-2009, 08:39 PM
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Originally Posted by sdg1871' post='969167' date='Aug 7 2009, 11:20 PM
I have a 2009 550i with Steptronic and have had the SB for less than a month. I have driven with the SB in all sorts of conditions. I do not believe that the SB totally eliminates the throttle lag between the application of WOT and the delivery of full power from the engine.
The SB does shorten the lag time and once power comes on, it comes on much stronger. In other words, it makes the gas pedal much touchier and more responsive. The car feels more powerful (it is not more powerful as SB does not increase the engine's horsepower or torque) because at the same level of throttle application, the SB-equipped car will provide more power. If you value a smooth throttle tip in (I don't), this may not be the mod for you as it is much easier to have jerky acceleration with SB. You can smooth it out with effort and learning to adapt to the SB.
The SB does shorten the lag time and once power comes on, it comes on much stronger. In other words, it makes the gas pedal much touchier and more responsive. The car feels more powerful (it is not more powerful as SB does not increase the engine's horsepower or torque) because at the same level of throttle application, the SB-equipped car will provide more power. If you value a smooth throttle tip in (I don't), this may not be the mod for you as it is much easier to have jerky acceleration with SB. You can smooth it out with effort and learning to adapt to the SB.
08-08-2009, 02:04 AM
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I have this for a GB as you know and I can honestly tell you that I hate it. I dont have pedal feel anymore when I drive it. It's probably mostly due to my car being a V8, manual, and ECU reflashed. Then I drove my Ghostteck's e60 with a I6. It feels better than when I drove a I6 without sprintbooster. It's all personal preference. I have a heavy foot and love to mash on the throttle. That's why I also get 8 to 9 mpg in city. 
08-08-2009, 02:11 AM
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Originally Posted by oilers99s' post='969330' date='Aug 8 2009, 04:37 AM
What about in DS mode? Will there be any difference with SB? I don't have SB installed but I find the throttle response in DS mode is alot more responsive than in normal D mode.
bmw809 had the same reaction when he tried it too.
08-08-2009, 08:32 AM
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My Ride: 2007 530i. Purchased 6/28/07. Titanium Silver Metallic, Black Dakota Leather, Dark Poplar Trim, Steptronic, Premium Package, Cold Weather Package, Bluetooth, Adaptive Control Xenons. 10/30/07 Added OEM 124s with 245/40/18 & 275/35/18 Michelin Pilot Sport A/S tires. Installed red Cal Covers� from BavAuto. 11/21/07 Added OEM all-weather floor mats (for winter, carpet in summer) and coat rack. 6/26/08 installed M5-style rear spoiler. 6/30/08 put on red reflectors. 8/22/08 Euro turn signal stickers applied. 3/20/09 Installed Shadowline Trim. 3/27/09 Added Matte Black Kidney Grilles from Trinity. 4/03/09 Installed Bimmian Shadow Matte Black 530i Badges. 4/04/09 Installed LED license plate lights from Trinity. 5/01/09 Installed Brabus Interior LED Kit and White Angel Eyes. 5/02/09 Put in Brabus 6K Fogs. 5/14/09 Removed charcoal filter. 5/15/09 Installed light smoke LED side marker lamps from Trinity. 5/21/09 Sprint Booster. 6/12/09 Painted exhaust tips flat black. 6/13/09 Pulled red Cal Covers and painted calipers low gloss black. 6/27/09 RPI Ram Air Scoop from Trinity. 8/15/09 Installed Brabus's silver invisibulbs front and rear. 9/24/09 Installed R-Dash license plate LEDs from Brabaus (John).
I'll join the chorus with quicker throttle response. At first, it seemed a bit jerky, but I guess my foot has gotten lighter to compensate. I really don't notice it that much anymore, but I imagine I would if I removed it.
08-08-2009, 08:40 AM
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My Ride: Alpine White 2006 530Xi (SLD)
I have an 06 530Xi (albeit with a stick shift) and I've had a SB on my car for pretty much this entire summer and I have to say:
And that's all I'm gonna say.
Yes.
Really.
IT IS A MUST MOD FOR AN I6 CAR.
And that's all I'm gonna say.
Yes.
Really.
08-08-2009, 09:01 AM
#10
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Originally Posted by sdg1871' post='969349' date='Aug 8 2009, 03:11 AM
My 550 in DS is considerably more responsive with SB than without it. Again, especially in DS, there can be some jerkiness in the acceleration with SB if your foot is not very smooth.