[Glowin]

Originally Posted by ASAP

Problem with the M4 at the moment...

4. All F generation cars have absurdly difficult ecu's to tune/crack... ask Cobb why we don't have a single F series accessport yet.

If that was true, how come the new M5 twin turbo has been flash tuned? Hartge and Switzer I know have tunes for it.

[nitehawk]

Originally Posted by Glowin

If that was true, how come the new M5 twin turbo has been flash tuned? Hartge and Switzer I know have tunes for it.

I thought they were piggybacks ?

[marcvtec]

Originally Posted by ASAP

Problem with the M4 at the moment...

1. Rumors of smaller turbos than N54, I can see the reasoning behind this in terms of responsiveness for the track but in terms of power it's a bad sign.
2. The car is running 18 + pounds of boost stock, the N54 ran 8 lol... if the M4 truly has smaller turbos, this car will not ever make the same power as a tuned N54 on the stock turbos.
3. Water to Air Intercooler is not cheaply or easily upgradeable.
4. All F generation cars have absurdly difficult ecu's to tune/crack... ask Cobb why we don't have a single F series accessport yet.
5. That damn steering system better be their best version of EPS ever...

Positives -
1. Full LSD
2. DCT
3. Closed Deck Block (this is bad ass)
4. Looks like a solid power curve (albeit with limited power)
5. Lighter

Just going by what we know now and looking deep into the details, I have a bad feeling about this car like I did about the F30 335i (and was right)...

+100
Exactly what I am thinking

[ASAP]

Originally Posted by Glowin

If that was true, how come the new M5 twin turbo has been flash tuned? Hartge and Switzer I know have tunes for it.

These tuners have translated and unlocked the ecu fully a la cobb atr or the like? My understanding is that these are some sort of euro tune files that are modified factory maps directly from bmw that were somehow obtained. All I know is that my buddy with a 335is dct kicked one of these +50hp tune f10 m5's ass...

[Glowin]

Originally Posted by ASAP

These tuners have translated and unlocked the ecu fully a la cobb atr or the like? My understanding is that these are some sort of euro tune files that are modified factory maps directly from bmw that were somehow obtained.

All I know is that my buddy with a 335is dct kicked one of these +50hp tune f10 m5's ass...

First of all, where did you get the info from that's how they got their files? Links? I ask, because your facts on the gains aren't even mildly accurate, so makes me wonder about your other claims...

Germany based Hartge has released the figures on its ECU software tune for the M5 and M6 good for 642hp and 810 Nm (597 lb-ft), representing an increase of +82 hp and +130 Nm (96 lb-ft) over the factory figures.

http://f10.m5post.com/forums/showthread.php?t=795588
.
.
.
The combination of hardware and software tweaks boosts the 2013 BMW M5′s output from the factory’s 560 claimed hp and 502 lb-ft of torque to nearly 700 hp and 640 lb-ft at the crank...

http://switzerperformanceinnovation.com/web_en/?p=3785

[Raja Ventureshield]

all good cars. I love the RRS a lot as well as the M6. I have seen m6s in the low 90s with low miles. It surely is an attractive upgrade IMHO. Also consider the new e63 with S pack.