So I'll be going K04 here in the next few weeks. I've been on the fence with this company's tune. Seems like DM is hit or miss when it comes to drivability, and programming. Somebody tell me otherwise, because I'm going to pull that $$$$ trigger in T-minus 48Hours.
I have no idea where you got your information about DM. Their tunes are 100% hit, no misses. The misses come when you apply the tune to a car that is not 100% up to snuff mechanically. Usually these tunes get applied to cars that have a number of miles on them and of course have on top of that been modified. Some folks are very systematic about bringing all the possible wear or problem parts up to new status before going K04, some take the approach of replace as necessary. Doing the prior is more expensive but it can keep you from chasing demons later. That is what I did when I went K04 about 1.5 years ago and have had only a minor problem or two to deal with.
The huge bonus for me was that you get the files directly from the tuner and can install them on your own.
As for drivability (speaking K04) that is exactly where they excel. I took a ride through my favorite twisty 12 mile high speed run yesterday and there is just so much usable power everywhere. The only thing I wished for on my run were the brake pads I use for the track because the car was so damn fast on the straights.
Coming back in to town driving normal again is also a joy as the tune makes great low end torque making it delightful to just put the car in D and cruise around. Or if you have a manual same thing, light revs, light throttle produces great torque at low rpm, perfect for scooting around town without scaring everyone.
If you have experience driving other K04 tunes you will probably note that they are big on the top end but lack power down low around 2500-3500 rpm. With NON DM tunes you are likely going to be driving around in town, in manual mode, to keep the rpms up into the power band. Or in a gear that keeps the rpms up above 3500 so you have some bit of power with light throttle.
The DM K04+ tune is a gem. Buy it, you will not regret it.
