Originally Posted by Ahhhhh-M3
just curious as im planning to purchase a m3 in oct, and wanted do filter, pulley, exhaust, and tune pretty much right off the bat. powerchip seems to be the best option in regards to what i want, now will getting the tune defeat the purpose of the idrive modes ( sport/comfort etc.) since it says it changes the throttle response or do the modes still work the way they r suppose to.
There are throttle changes to each mode. However, they remain fully function and you can clearly tell the difference between each one.