56HP gain for $1299? How safe is this?
Is anyone here into upgrades and mods? This one *seems* like it's fairly harmless to the engine and according to the website you can gain 56HP, which IMHO would make it worth wile. Wonder what your opinions are and if anyone has any experience with the product or at least knows someone who installed this?
(they have one for the 328 too)
2013 335i SPORT LINE jet black
2007 328xi - sold March 2013