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      01-08-2012, 02:03 PM   #10
WilliCO's Avatar

Drives: 2013 F10 535 xDrive MSport
Join Date: Jan 2012
Location: Denver

iTrader: (0)

Originally Posted by 5mokem View Post
Sprint booster arrived and installed! I love it. Sport mode is definitely the way to go for daily driving. Very responsive. Since my original post, I've also got the RPi ram scoop installed (that alone I noticed a difference), K&N drop in and also removed my charcoal filter. Just these basic mods have made my 550i a fun car to drive! FYI, the control knob on the V2 of the sprint booster can be taken off after initial control setting. I don't like having that module making my cab look like a ricer (been there done that when I was younger). I don't recommend racing mode because there is some jerkiness to that. All in all, I think the sprint booster is worth every penny!
As an alternative viewpoint, I tried a Sprintbooster and didn't care for it. I don't see it as a performance modification - it does nothing to increase the car's performance. It remaps the throttle so that 100% of the throttle control occurs in about ~30% of the pedal's travel. There is nothing left in the remaining ~70%...literally, pushing the pedal any further has absolutely no effect on the throttle because it's already pegged.

Personally, I felt like I was flooring the car at every stop sign, and that wasn't really a neat thing for me. So I sold mine.

The Sprintbooster certainly is a noticeable mod though, and I can see how some people might dig it. To each his own.
2013 535i xDrive M-Sport | 2005 545i Sport (Retired and missed) | 2001 X5 3.0 Sport (Retired)