Sprint Booster where to by other then SLKfans
Member
Joined: Jun 2006
Posts: 233
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From: Bay Area, CA
E55
From my searching, what I think is that the normal one will probably have a steeper slope and is more aggressive. The new version is slightly mellower, tailor for the supercharged and modified vehicle.
If you want something more aggressive than probably the normal version is better. I have not driven the E63 yet, but if it is plenty strong and you want snap but still want the smoothness then the newer version is fine. But if you want the SB to make the car as crazy as it can, then the old version seems to be your option. Then you can use the shift mode to adjust for a mellow ride.
I opted for the new version because all I wanted was for the delay to be gone and that the car is always ready to charge so I don’t have to wonder if the car is sleeping and I need to do an initial WOT to wake it up. Worse case (happened to me once) was when I wanted to surprise my passenger for like a 2 second run, nothing really happened!! Then they are already somewhat shocked so that you can’t do another run and that previous run was like it hasn’t even down shifted completely because of the lag LOL!
Senior Member
Joined: Feb 2007
Posts: 498
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From: HI transplant in Seattle
2024 G63, 2021 X7M50i
I agree Tigerlam92. I am purchasing the Sprint Booster to optimize the low end on the 63 since it is not supercharged. I am feeling a little ill now that I learned that I ordered the mellower version which is completely opposite of what I wanted.
I have emailed the vendor and have yet to hear back. I am hopeful that they can change my order before it ships.
Worst case scenario I am hoping that perhaps someone on this board with the BDD451A on an E55 would be interested in an even trade.
I have emailed the vendor and have yet to hear back. I am hopeful that they can change my order before it ships.
Worst case scenario I am hoping that perhaps someone on this board with the BDD451A on an E55 would be interested in an even trade.
Senior Member
Joined: Feb 2007
Posts: 498
Likes: 3
From: HI transplant in Seattle
2024 G63, 2021 X7M50i
Sandoval, you are right I received quick response from the vendor who recommended that I order the "A2" version despite having a 63 n/a motor. I am told that Sprint Booster designed the "A2" version to accomodate the higher torque associated with both the 55 and 63 models and to avoid check engine light issues due to "irregular torque behavior." Thus, I have opted for the "A2" version which vendor assures me will still provide significant improvement.
Super Member
Joined: May 2003
Posts: 576
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From: Midwest
'08 SL550 Sport, '11 BMW 550ix M sport
FWIW, I got the 451A, and with my AWD vehicle it's a great match. But maybe the A2 might be a good fit with the RWD 211's. I'd be curious to see the difference side by side. Good luck! (Man... I wish you guys would have done this a month ago, I'd have saved $50!)
Thread Starter
Super Member
Joined: Jul 2003
Posts: 756
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From: Denver
McLaren 12C Spider | Lamborghini Superleggera | Porsche 997.2 TT | Cayenne TT | AMG GTS
You need to PM me for the URL to the vendors Shopping cart. Their are less then 10 Sprint Boosters left once the 20 units are gone the GB will be over. I tried to PM you but your box is full.
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MBWorld Fanatic!
Joined: Jan 2004
Posts: 2,853
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From: Boston
CLK500/Range Rover HSE/E55 AMG/Bmw 328Xi coupe/BMW 4.8x/Bmw 335i/GS350/Audi S5/E350
I'd buy them all up and resell them at a Premium...these things are a must for our cars!
Thread Starter
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Joined: Jul 2003
Posts: 756
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From: Denver
McLaren 12C Spider | Lamborghini Superleggera | Porsche 997.2 TT | Cayenne TT | AMG GTS
I believe there will only be 4 or 5 left after this evening. The vendor has been very responsive so I bet the SB's will be arriving much faster then previous experiences.
Thread Starter
Super Member
Joined: Jul 2003
Posts: 756
Likes: 19
From: Denver
McLaren 12C Spider | Lamborghini Superleggera | Porsche 997.2 TT | Cayenne TT | AMG GTS
I just received an email, The first batch will go out on Friday (those who ordered by Monday) The second batch will be going out the following week.
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Joined: Apr 2006
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From: Maryland
Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
MBWorld Fanatic!
Joined: Jan 2004
Posts: 2,853
Likes: 1
From: Boston
CLK500/Range Rover HSE/E55 AMG/Bmw 328Xi coupe/BMW 4.8x/Bmw 335i/GS350/Audi S5/E350
MBWorld Fanatic!
Joined: Jan 2004
Posts: 2,853
Likes: 1
From: Boston
CLK500/Range Rover HSE/E55 AMG/Bmw 328Xi coupe/BMW 4.8x/Bmw 335i/GS350/Audi S5/E350
Thread Starter
Super Member
Joined: Jul 2003
Posts: 756
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From: Denver
McLaren 12C Spider | Lamborghini Superleggera | Porsche 997.2 TT | Cayenne TT | AMG GTS
Guys there is only 1 sprint booster left from the group buy 19 units have been paid for. Shipping starts Friday 
PM me for the link after the last SB is sold the price goes back up to $300.
PM me for the link after the last SB is sold the price goes back up to $300.
Super Member
Joined: Aug 2005
Posts: 953
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2004 E55
Thread Starter
Super Member
Joined: Jul 2003
Posts: 756
Likes: 19
From: Denver
McLaren 12C Spider | Lamborghini Superleggera | Porsche 997.2 TT | Cayenne TT | AMG GTS
I am in sales but not sprint boosters... However I wish I owned the company $250 for a .25 cent part! Those margins are huge. They don't advertise in the US from what I have seen. So you can't say the margins goes towards their marketing budget.
