I was told that there is another product that supercedes Sprint Booster.

Its called (get ready for this highly creative name) Power Pedal from a company called Tunekit in Germany.

Plus is that its from a German company which probably means its got to be TUV tested and gives me added confidence that it does what it claims.

The difference with this I am told is that this is variable/adjustable sensitivity vs dead settings for sprint booster.

No affiliation with them whatsoever. There seems to be a US distributor as well so good luck.

TuneKit - power of performance