Hey guys want your opinions on some issues.

First of all i love driving this car, active steering and active "swaybars" make the driving experience just great, but one thing that lacks is the throttle response. I know there is nothing as far as FI you can do on the engine but as far as tunes, the gains are really nominal.

Now i was thinking about getting the Activeauto- tune as they are local and also getting sprint booster. Now my question is can the tune alone solve and improve my throttle response or should i use it in conjunction of Sprint booster? Also I was planning on getting my own CF Scoops mounted, just like RPI, but have two of them and use some brake ducting to direct the air from the second scoop to the airbox. what are your thoughts on it?

Also i think i got bad gas recently. The car is idling just a little higher than usual. Is chevron fuel injector cleaner the best one and most recommended on our cars? can we use any Injector cleaners and etc on bmws?

now there is a guy on e90post and he recently installed headers on his car. Knowing that both cars have the same engine, do you think we can use those headers also? supersprint headers seems pretty expensive!!