TBH i wouldnt bother. The gains will be so minimal its simply not worth the cost.
Chip/remap tuning alone only really has good effects on turbocharged engines, as it allows you to increase the boost pressure.
If you really want to tune the 2.4 then you need to look at more traditional tuning methods, like good exhaust manifolds and exhaust, cylinder head porting, cams, intake manifold/throttle bodies.
With the right work, upwards of 240hp could be seen from that engine, however it will be VERY expensive to get there.
If you want some cheap tweaks, then perhaps a set of 2.8 intake cams, decat and a full exhaust will make it a bit more sprightly.
My advice though is to save your money, and if you really want more power than buy a 2.8 or a 1.8T.
