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E60 (2004 - 2010)
BMW 5-Series (E60 chassis) was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E60 is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 02-23-2012, 12:08 PM
Space grau 550i Space grau 550i is offline
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Sprint Booster V2?

Is the Sprint Booster V2 really worth the $300 price tag? Or is it better to leave it in DS mode when cruising under 40 mph? I know DS mode kills your mpg, which is why I only use it when getting on the freeway, or when I want to play with curious cats. The lag is quiet a nuisance now.

Also, where is a good stealth mounting location for SB when bringing your car in for service? Taking it off all the time is just ridiculous .
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  #2  
Old 02-23-2012, 12:58 PM
antbull07 antbull07 is offline
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Am I hearing that the 2010 550i has the lag issue from stop also?
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  #3  
Old 02-23-2012, 01:16 PM
Dishoom Dishoom is offline
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As I understand, the Sprint Booster essentially just amplifies the acceleration input based on the pressure you put on the pedal. I would assume it's not much different from being in DS mode or mashing your pedal harder than you normally do. IMHO, $300 is not worth it. Have you tried the adaptive transmission reset?
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  #4  
Old 02-23-2012, 01:19 PM
Space grau 550i Space grau 550i is offline
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Yeah, adaptive transmission done already. Throttle is still crappy at local cruising speed.
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  #5  
Old 02-23-2012, 01:20 PM
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Oceans10 Oceans10 is offline
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+1
Not sure why you take it off when going in for service. It only amplifies the signal from the pedal, not a tune. You would get same effect by pressing the pedal harder and faster.
Better off using the sport setting IMHO.
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  #6  
Old 02-23-2012, 01:31 PM
Dishoom Dishoom is offline
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Seems like the transmission reset needs to be done periodically. I just did mine the other day, after almost a year and I could def feel a difference. I do agree the throttle response sucks at cruising speed...it just doesn't feel like a 360hp/360lb-ft car! When I mentioned it to my dealer, I was told to just use the manual shift if it doesn't move like I want it to -- WTF?! That "oh sh*t" feeling is definitely not fun when trying to make a u-turn or left turn with on-coming traffic headed your way!
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  #7  
Old 02-23-2012, 01:38 PM
Space grau 550i Space grau 550i is offline
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The throttle mapping is horrible on the e60. The 328i loaner I had throttle was much more responsiveness than my car, but then again the adaptive transmissions is probably ultra responsive, as most people drive loaners like they stole them, I know i do.
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  #8  
Old 02-23-2012, 06:47 PM
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ProMed12 ProMed12 is offline
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I love mine, didn't pay $300 however, it was $160 used. The "red" setting is too abrupt, green is just right imo. Of course it doesn't make the car any faster but it does make the throttle feel much less sloppy and I like only needing to make small inputs.

When I've tried turning it off, after getting used to the green setting, the car feels like a turd. It's certainly not needed, but bottom line for me is that it makes the car noticeably more fun to drive and that was worth more than $150.

Hope my biased opinion helps!
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  #9  
Old 02-23-2012, 08:17 PM
Space grau 550i Space grau 550i is offline
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^ Thanks for the input ProMed12.
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  #10  
Old 02-25-2012, 03:17 PM
sockmonkey sockmonkey is offline
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Thank god I read this- I just got a pretty mint 2006 550i, and it seems like it starts in 2nd with hard throttle, and then quickly (1/2 sec or so) bounces into 1st and takes off like a scalded cat. Odd...
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  #11  
Old 10-11-2012, 03:29 PM
danmar273 danmar273 is offline
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I have previously installed a Sprint booster on my Mercedes e500 which had a "sluggish" throttle and it worked very well . Now I am driving a BMW 535d and have been frustrated with the "sluggish" throttle on it....I decided to go the SB route again and I am once again very impresed .

It does not increase HP. But it makes the car behave so much more responsively (on green setting). Just trying to press the pedal harder without a SB, just does not do the same thing. These engines work on pedal postion, ramp rates (i.e how fast you press it) etc. The SB just seems to connect your foot directly to the accelerator the way it should have been....not through a wet noodle to the pedal.

I can assure any non-believers, this is not a placeabo. You turn it on, you're in business . You turn it off, you're driving a completely different car again....

P.S. Red setting is obscene. But i'll use it I'm sure yet.

Good luck Folks. You'll enjoy it.
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  #12  
Old 10-11-2012, 03:41 PM
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Quote:
Originally Posted by Space grau 550i View Post
Is the Sprint Booster V2 really worth the $300 price tag?
No. Completely worthless gimmick.
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  #13  
Old 10-11-2012, 07:10 PM
Ramsey Barnette Ramsey Barnette is offline
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Get the Dinan stage 1 ECU reflash. I got it for my 550i, it fixed the slow throttle, increases your RPM by 200 in each gear and is stock-smooth. $500.00 is worth it.
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  #14  
Old 10-11-2012, 08:26 PM
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Mein Auto: BMW 535i Sport, 08 Accord
I test drove both 550i and 535i 08 model..

Thats the simple reason i chose 535i and i am happy..
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  #15  
Old 10-11-2012, 09:40 PM
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something told me not to buy this and it sounded like a gimmick. sports mode it is!
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  #16  
Old 10-12-2012, 03:31 AM
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I wanted to get the same thing too, but than again changed my mind to do OE Tuning ecu, but I guess I'll get the SB than some time later the ECU,
Anyone know if they will work together?
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  #17  
Old 10-12-2012, 11:42 AM
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dont do it.
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  #18  
Old 10-12-2012, 06:10 PM
hp jnkey hp jnkey is offline
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Quote:
Originally Posted by PolkNole View Post
No. Completely worthless gimmick.
Wrong

This thing works.
I added it to my JB4 tuned 535.
It's friggin awesome.
It just jumps off the line with practically no pedal pressure with the setting on Red.
Almost too sensitive.
Completely got rid of the lag.
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  #19  
Old 10-12-2012, 08:36 PM
Space grau 550i Space grau 550i is offline
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I have been debating this purchase since starting this thread. However, the naysayers have kept me from buying this. Still dealing with my debilitating throttle lag though.
My throttle lag is so horrible in city driving that I have to constantly slide to DS mode for that extra punch when switching lanes over on an aggressive driver.
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  #20  
Old 10-12-2012, 08:41 PM
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Quote:
Originally Posted by Space grau 550i View Post
I have been debating this purchase since starting this thread. However, the naysayers have kept me from buying this. Still dealing with my debilitating throttle lag though.
My throttle lag is so horrible in city driving that I have to constantly slide to DS mode for that extra punch when switching lanes over on an aggressive driver.
that's not right your car should have the power. R U sure u have no other issues. something has to be wrong maybe some sort of fuel issue
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  #21  
Old 10-12-2012, 08:57 PM
Space grau 550i Space grau 550i is offline
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Originally Posted by CleanE60 View Post
that's not right your car should have the power. R U sure u have no other issues. something has to be wrong maybe some sort of fuel issue
I don' t think it's a fuel issue. It mainly does this at city speeds, it will think think think, then drop a gear and shoot off like a rocket. It's not like hit the gas and it just goes. My throttle is very uninspiring in D mode. I have been seriously debating selling this car and getting a F10 335i, or somehow convincing my better half that the e92 M3 coupe is doable.
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  #22  
Old 10-12-2012, 10:24 PM
hp jnkey hp jnkey is offline
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Originally Posted by Space grau 550i View Post
I don' t think it's a fuel issue. It mainly does this at city speeds, it will think think think, then drop a gear and shoot off like a rocket. It's not like hit the gas and it just goes. My throttle is very uninspiring in D mode. I have been seriously debating selling this car and getting a F10 335i, or somehow convincing my better half that the e92 M3 coupe is doable.
I was also a skeptical like you.
What convinced me was my brother. He has a 2011 Merc E550 which had a bad case of throttle lag. It bothered him so much that he decided to spend 350.00 and try a Sprint Booster. I got to drive his car 3 months ago and couldn't believe the difference.
The lag was horrible with the setting on stock but with the setting on Red, it just jumped off the line. Day and night difference.
My 535 even with the JB4 set at 100% throttle had a certain amount of lag so I decided to try a Sprint Boost. It works great off the line but also at any speed.
Trust me, buy the sprint booster.
The first time you drive your car after you install it, the Smirk on your face will be bigger than Joe Biden's last night.
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  #23  
Old 10-12-2012, 11:29 PM
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CleanE60 CleanE60 is offline
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Quote:
Originally Posted by hp jnkey View Post
I was also a skeptical like you.
What convinced me was my brother. He has a 2011 Merc E550 which had a bad case of throttle lag. It bothered him so much that he decided to spend 350.00 and try a Sprint Booster. I got to drive his car 3 months ago and couldn't believe the difference.
The lag was horrible with the setting on stock but with the setting on Red, it just jumped off the line. Day and night difference.
My 535 even with the JB4 set at 100% throttle had a certain amount of lag so I decided to try a Sprint Boost. It works great off the line but also at any speed.
Trust me, buy the sprint booster.
The first time you drive your car after you install it, the Smirk on your face will be bigger than Joe Biden's last night.
well I missed joe biden last night... but I like the sounds of that. does the cobb tune do anything for the throttle response similar to the sprint booster?
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  #24  
Old 10-13-2012, 09:07 AM
hp jnkey hp jnkey is offline
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well I missed joe biden last night... but I like the sounds of that. does the cobb tune do anything for the throttle response similar to the sprint booster?
If your Cobb is set for Stock throttle, which is really snappy, you won't need a Sprint Booster.
I was running a Cobb for over a year and loved it. The reason I changed to JB4 was so I could run the E85 fuel mixture. The performance of the JB4 and Cobb are similar when using 91 octane but the power delivery is different. The Cobb feels a little faster under light throttle conditons in the lower gears but the JB4 has more up top.
When I started using E85/91 mix, I tried the Cobb on Stage 1 Aggressive. The power difference was big but my gas mileage dropped alot.
I was getting 20-22 mpg city/highway with the Cobb stage 1 but when I went to the E85/91 fuel mix and changed the Cobb to Stage 1 Aggressive my gas mileage dropped to 17-18 mpg. This was with similar driving.
The JB4 has an Auto tuning map which works very well if you want to run higher octane fuels like the E85/91 mixture. The performance is similar to the Cobb Stage 1 Aggressive but my gas mileage is back to about 20-21 city/highway.
The thing I didn't like about the JB4 was that sharp throttle response which I had with the Cobb. This is why I installed the Sprint Booster and now the thing is even sharper than it was with the Cobb tune set on Stock.
It doesn't matter what speed you are going or what gear you are in, you can feel that sharper throttle all the time.
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  #25  
Old 10-13-2012, 10:32 AM
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PolkNole PolkNole is offline
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You guys wasting your money crack me up. It is a GIMMICK. You want more power? Push down on your gas pedal a tad more.

You do realize the sprint booster makes the final 25% of pushing on your gas pedal worthless?

All you're paying for is less control over the actual power you want to send to your engine, trading control for a power illusion because you're not pushing down as much.
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