The DS is a generic map and so the likes of the BF and all the other units mentioned...

The problem with the generic maps are that they overfuel heavily! This can result in poor economy and a loss of power (as you probably know)...however, they are a GREAT method for cheap upgrade and hike in power and its what most people use with great success!

I normally say anything up to around the 320-330hp, use the DS or BF, anything above, personally I would get it live mapped from MSD as I will be doing myself.

MSD are also able to map for bigger injectors and will be able to push the MAF sensor as far as it will possibly go!

Alot of people who claim they can map the FRS management, map through a DS unit! I know MSD actually map onto the ECU itself and retain all OEM features

Fingers crossed mine will be making its way up to MSD after my inlet, cams and rods are done...ill only be able to comment on how good the custom maps are once thats done.

But I can happily compare the DS and BF as I have both units sat here lol