DINAN stage 3 software

[tom650]

I am considering the DINAN stage 3 software to make the car more responsive and smoother. I have the SMG. Can somebody that has it on his BMW please comment on the drivability of the car. I am looking for feedback if the car is more responsive/sportier that makes it more enjoyable.

I am also planning to do the 3.45 dif and I would like feedback on that to.

Thank you!

[JESMAL]

How much gains are you looking at with the ecu flash?

From what I heard, HIOP offers gains ranging from 25-30hp.

DMS might be able to get the 650i to 399hp (stock).

Do a bit more research perhaps?

[PapaFlEx]

for stage 3 u need and intake exhaust and throttle body... otherwise get a stage 1... without those mods its useless

[6DINAN]

The 3.45 dif will make the most difference; agree with PapalFlex that Stage3 is worthless w/o intake/exhaust.

I have those mods, plus Stage 1 suspension and a few other goodies on my 6er.

[tom650]

So what is your feedback on those mods. I am planning to do the CAI and TB with stage 3 and the 3.45 from DINAN but what to understand the benefit first so please provide feedback or even performance data if you have.
Thanks

[6DINAN]

My feedback is that it's money well spent. You'll notice a difference in throttle response and seat-of-the-pants meter. Dinan quotes HP/TQ gains that seem conservative, though I haven't dyno'd the mods. I have SMG as well, fyi. I can't really comment on the "smoothness" vs. stock 645, having driven a stock 6er only twice before getting my car with the mods and I'm not sure if the "smoothness" factor doesn't come from the suspension (Stage 1) I have.

My advice - do the intake and exhaust while you're at it. I've had several people comment on the exhaust, and a lot of people have confused my '04 645 with a new M6.