Hi everyone. My first thread here. Was wondering if anyone is familiar with the software upgrade that BMW offers that will supposedly add extra 20hps ? Asked a local dealer and they did not seem to know much about it and were not enthusiastic at all and told me to wait until I am due for new spark plugs!!!! Appreciate any input.
Are you taking about this? http://www.turnermotorsport.com/p-1...ftware-for-bmw-135i-335i-535i-n54-engine.aspx Dinan probably has something too, can't find it on their website.
Thank you, Dinan does have an upgrade similar to the one Turner Motors offers but the one I am interested in, is similar to the one offered on 2012 135 and 335 as an option. BMW offers a retrofit of this option for model years 08-11 and it adds about 20 hp. I am amazed that the dealer was unprepared and not well informed about this.
