BMW's N55 Single Snail TwinPower

Muffnbluff · 12-10-2009, 07:19 PM

Quote:

Originally Posted by Mooreski

So, then what's the purpose of unequal length headers? To make all the exhaust pulses hit a common point at the same time and get back pressure to spike and clear out before the next set of pulses is generated by the cylinder?

I think the design is just cheaper and easier to manufacture. The special edition STi's sold in japan have equal length headers, and many of the aftermarket headers are el as well.

Muffnbluff · 12-10-2009, 07:20 PM

Quote:

Originally Posted by twinturbopg

oh thanks for explaining that....I will make sure to tell one of my buddy's the same thing.

Thanks for the knowledge seriously!

No problem, the lingo can be confusing sometimes.

Jonny550 · 12-10-2009, 07:56 PM

Damn doesnt that FMIC look way better than the N54's

gqmd · 12-11-2009, 05:02 AM

Quote:

Originally Posted by ar design

LOL. IMHO, its more the other way around. Supras are lag monsters that are fast in a straight line, and thats about it. The interior sucks too.

Interiors are completely subjective. When I was planning my move to BMW years back, I almost turned away due to the uninviting interior. To this day I feel our interiors are quite lacking, very blah. Wish we had even a bit of the WOW factor of the Audi interiors. But I drive a BMW not for performance or interior...but for its all around driveability and class.

mkPOTO · 12-11-2009, 10:27 AM

the v8 turbo looks SICK!

Blind32 · 12-11-2009, 11:42 AM

Quote:

Originally Posted by Bubbles

The BMW 535i Gran Turismo, like the other two model variants, comes as standard with a wide range of BMW Eff cientDynamics technology. Supplementing the excellent effi ciency of the respective engine and the eight-speed automatic transmission, features such as Brake Energy regeneration, on-demand management and operation of ancillary units including the electrical coolant pump, the electrical power assistance pump and the detachable a/c compressor, as well as consistent lightweight engineering, optimised aerodynamics including active management of air flaps, and tyres with reduced roll resistance, ensure optimum fuel economy and emission management at all times.[/I]

Wait, so it will have KERS?

Vyruz Reaper · 12-11-2009, 12:09 PM

Quote:

Originally Posted by ar design

LOL. IMHO, its more the other way around. Supras are lag monsters that are fast in a straight line, and thats about it. The interior sucks too.

hey, I haven been on in a while, school has been kicking my ass, but I kinda like this route better than the n54...

soo, what cars have they confirmed this new beast going into? I really hope they bring it to the 3 coupes

joec500 · 12-11-2009, 12:14 PM

Quote:

Originally Posted by mkPOTO

the v8 turbo looks SICK!

AND they are located at the top of the motor!!! Much easier to tinker with if needed.

Blind32 · 12-11-2009, 12:57 PM

Quote:

Originally Posted by Blind32

Wait, so it will have KERS?

Never mind just found this

The new 5 Series Gran Turismo is equipped with BMW’s Brake Energy Regeneration system. This system controls the times at which the alternator charges the battery. In the Gran Turismo, the brakes charge the vehicle when it’s decelerating or braking; otherwise, the alternator freewheels, drawing virtually no power from the engine. An electronically controlled clutch, somewhat similar to that used with the air-conditioning compressor, is added to engage and disengage the alternator. Pretty smart … I wonder what the alternator costs to replace though.

http://www.automoblog.net/2009/05/25...-gran-turismo/

Pretty neat...I'd rather have a KERS button tho...

Driver72 · 12-12-2009, 03:35 PM

I'm reading and learning that the N55 won't be nearly as tuner friendly, which sucks.
And unlike the N54 that gets 70+ hp from a tune only, it will be lucky to get half that amount on the N55 from tune only.

That really sucks for the mod crazed enthusiasts that have made the N54 powered cars such a big success over the past 3 years.
But clearly BMW has to protect the upcoming TT 6 in the 2013 M3
(which will probably be a 3.3 liter TT V6, or essentially their current 4.4 TT V8 with 2 cylinders lopped off).
However, I would of hoped for a 3.3-3.4 liter I6 with TT's making 420+ hp rather than the 3.3 V6 which will probably be 405-410 hp (though it should be faster than current 414 hp 4.0 V8 M3 since the new car should weigh 100 lbs less, and have 50-60 lbs feet of torque more as well).

12-10-2009, 07:56 PM	#113
Jonny550 Brigadier General 241 Rep 4,936 Posts Drives: 2012 550i Xdrive Join Date: Feb 2009 Location: Jersey Shore iTrader: (14)	Damn doesnt that FMIC look way better than the N54's __________________ [SIGPIC][/SIGPIC] .
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12-11-2009, 10:27 AM	#115
mkPOTO Mr. Nice Says Hello 635 Rep 16,662 Posts Drives: BMW M3 \| X5 xdrive 35i MSport Join Date: Dec 2008 Location: USA iTrader: (25) Garage List 2002 Lexus GS300 [0.00] 2008 BMW E92 M3 [5.58]	the v8 turbo looks SICK!
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12-12-2009, 03:35 PM	#120
Driver72 Brigadier General 327 Rep 4,484 Posts Drives: 335i - to new owners now. Join Date: Dec 2006 Location: California iTrader: (0)	I'm reading and learning that the N55 won't be nearly as tuner friendly, which sucks. And unlike the N54 that gets 70+ hp from a tune only, it will be lucky to get half that amount on the N55 from tune only. That really sucks for the mod crazed enthusiasts that have made the N54 powered cars such a big success over the past 3 years. But clearly BMW has to protect the upcoming TT 6 in the 2013 M3 (which will probably be a 3.3 liter TT V6, or essentially their current 4.4 TT V8 with 2 cylinders lopped off). However, I would of hoped for a 3.3-3.4 liter I6 with TT's making 420+ hp rather than the 3.3 V6 which will probably be 405-410 hp (though it should be faster than current 414 hp 4.0 V8 M3 since the new car should weigh 100 lbs less, and have 50-60 lbs feet of torque more as well).
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