SLK55R

Okay just installed it and I got to say I love it. While it might seem a bit for difficult to modulate ... I feel that its something that just takes a little time to get used to. I took off the sneakers and went to more of driving shoe.

My initial take is that because we use a 7 speed tranny, that we can't reset manually, this allows you to program the tranny as if your driving the car hard all the time. This makes the car shift faster and hold gears longer. This throttle response definitely seems improved. I have a car with a lot of HP and torque but if the tranny programming is slow (from driving in traffic etc) the throttle response is definitely slower. It takes a few hard runs to get the tranny to be in more aggressive mode. With the Sprintbooster I'm in aggressive mode all the time.

I can't believe a few wires makes such a big difference. This mod is only a couple hundred bucks ... DO IT!

Now as to where I purchased the SprintBooster ... I got from SLKfans and I'm glad it finally arrived. It did take a long time and there was some confusion on the shipping but at least it got here. Since SLKfans is just doing this as a favor to others, I just wanted to express my thanks.

As to the install ... EXTREMELY easy.

bfnnrgn

I couldn't agree more. I couldn't live without my sprintboosters. Give it a few weeks when you're good and used to it then take it out then drive around, you'll think your car is broke. It's night and day.

alroumi

Good to see you guys enjoying your SLK's, may I ask how much did it cost you and are there instructions online for installation procedure?

Since my SLK55 is modded, I would like to install the Sprint Booster to make the car in aggressive mode.

thank you in advance.

rubensans

What about city mileage?

Best Regards.

SLK55R

To be honest I buy 100 octane gas ... I'm not really worried about mileage. I'd assume it has gotten worse though!

It was less than 300 dollars ... install was use a 10 mm socket remove and replace wire ... put back. It took less than 10 mins. Of which most of that was just the removal of the bolt.

dsb

I've thought about this upgrade but have a major concern.

Once in awhile, I swap cars with the wife. Does this thing make it too touchy? I would hate for her to smash into another car when simply trying to park, etc. How about wet conditions?

Again, I'm not worried about me since I'll be used to it... but for my wife that rarely drives it.

SLK55R

yeah its a touch more sensitive and I was losing traction going in reverse a couple times! But it really isn't THAT bad. Its like going from an E320 to a 1999 E55.

I know you have concerns about the wife driving it ... but to not allow yourself this mod because of her ... . DO IT.

I've been driving it a bit more now and its been raining. I haven't had problems (even with R compound tires) driving smoothly or slowly.

It is absolutely amazing what this mod has done.

chitownc32

HOw much does this cost and where can I do it?

SANDOVAL

The E55 forum had a group buy setup PM me for the URL $250 shipped.

IIIMBPIII

Sorry stupid question... But where are you installing this? Does it have anything to do with the ECU? Is there a DIY somewhere? Im deff going to order one I hate the slow response once I get done driving in traffic through SF.


Thanks!

SLK55R

its installed underneath the accelerator pedal. Its really simple ... remove a bolt and attach wires, reinstall bolt. Done.

IIIMBPIII

Thanks for the quick response... wow this sounds to good to be true!

IIIMBPIII

Went down to the dealership today cause the damn FM wont work its just full static.... but they guy actually happend to have a sprintbooster on hand and said he would sell it to me and install it for a total of $350... i thought this seemed kinda high, no?

SANDOVAL

There are three Sprint boosters left from the extended group buy. Is waiting a week, doing a 5 minute install worth $100 to you? If so then I would get the $250 GB SB. If you can't wait and the $100 is no loss to you then be sure you are getting the newer AMG version. Model #: BDD451A2

SANDOVAL

here are the DIY Instructions: https://mbworld.org/forums/w211-amg/192491-sprint-booster-install-instructions.html

slkfans

SLK55R,

No worries, you are welcome.

My sincere apologies for it has taken quite a fair bit of time. Glad you understand the entire process flow especially the slips here and there.

At least for now, I keep sufficient buffer of sprint boosters so that I can ship them immediately, this is a better workaround to avoid any slips in the near future.

By the way, it is $250, ready to ship

You have fun !

Cheers !

jerryxu

Sorry to say that you have lost reputation to several people on this board that I read, not so much as restocking, but not responding to email requests. I hate that myself. I'm sure you do too, if you were buying, even from a friend.

StealthAuto

the Sprintbooster is definitely a good upgrade as is performance software which also improves throttle response.

Glad to see you're enjoying your purchase!!

-Aaron

diclehana

I bought sprint booster a week ago and it is a must for R171 like smarttop module. My car is a humble 200 Komp, I can not imagine a 55 AMG with SB. It must be a real monster

Catchmefucan

... and I really can feel the difference. I realize this won't affect my top end, but it really helps off the line. Modulating the throttle is easy enough and the response is definately improved. I'd say $300 well spent. Installation is a no brainer.

Andy

IIIMBPIII

Went to the dealer ship... now are they just trying to scare me or what? This woman claimed that if I put a sprint booster in that it would void the warrantee???

bfnnrgn

I don't see how. You're not modifying the engine or power output and not changing any system in the car. It's no different than putting rims on the car. It's just a look and feel kind of thing.

IIIMBPIII

I was thinking the same thing but the women seemed hell bent on the fact that it would... i really didnt think she knew what she was talking about but oh well thank!

BUDDHAAMG

Thanks so much for this forum. I must log on more often. The SB on my list. Thanks everyone for the collection of ideas photos and exchange of HiPerf chat. So Glad to hear there are speed freaks like me still around living in the souls of AMG fans. The Buddha Drive on!

IIIMBPIII

Went with it... and I love it!!!! The response is deff better I had it done through the dealership the guy was disapointed with it he had installed it on many E55s and an E63 he said with the superchargers you feel it a lot more but i told him there was deff difference and i enjoyed it.