N54 and N54T difference?

Jtoft · 08-14-2014, 09:27 AM

What is the difference between the N54 and N54T engine? Or in case i have misunderstood something, the difference between 135i and 1M engine.

Is it only an ECU difference, or is it more substantial?

Zombie1 · 08-14-2014, 09:48 AM

Better free flowing downpipes, ECU and not sure but possible better cooling.

fcman · 08-14-2014, 10:08 AM

Quote:

Originally Posted by Zombie1

Better free flowing downpipes, ECU and not sure but possible better cooling.

Yeah I would think it has all of the cooling from the PPK2, at the minimum.

Freon · 08-14-2014, 10:11 AM

Hadn't heard there was a downpipe difference before. Citation?

FactorX81 · 08-14-2014, 10:37 AM

Quote:

Originally Posted by Freon

Hadn't heard there was a downpipe difference before. Citation?

They are different parts per realoem. As far as better flowing I think one of the tuners was quoted as saying that once upon a time.

Asbjorn · 08-22-2014, 06:20 PM

The N54T in the Z4 35is and the N54T in the 1M are not entirely the same. The N54T in the Z4 is just a N54 but with different ECU software (higher hp + overboost). The N54T in the 1M uses yet another type of software, for instance it has an M-button-activated map available. In the Z4 you "just" get the dynamic driving switch which changes the throttle response but not the engine response. You need to install tuning software to get the M-button-like throttle response, but then it becomes "sensitive" all of the time, because there is no button to deactivate it.

Finally the 1M has an extra water aux cooler as well as race cats instead of regular cats installed in the down-pipes. I believe it was mentioned in the 1M brochure as well.

Jtoft · 08-25-2014, 10:52 AM

Thanks

exactly what i was looking for.

flinchy · 08-26-2014, 05:54 AM

Quote:

Originally Posted by Asbjorn

The N54T in the Z4 35is and the N54T in the 1M are not entirely the same. The N54T in the Z4 is just a N54 but with different ECU software (higher hp + overboost). The N54T in the 1M uses yet another type of software, for instance it has an M-button-activated map available. In the Z4 you "just" get the dynamic driving switch which changes the throttle response but not the engine response. You need to install tuning software to get the M-button-like throttle response, but then it becomes "sensitive" all of the time, because there is no button to deactivate it.

Finally the 1M has an extra water aux cooler as well as race cats instead of regular cats installed in the down-pipes. I believe it was mentioned in the 1M brochure as well.

The z4 is WAY different

Saw a 1m, 135i and z4 35i and 335i side by side

Z4 has accessories mounted completely differently, different hard piping etc

08-14-2014, 09:27 AM	#1
Jtoft New Member 3 Rep 14 Posts Drives: BMW 135i Join Date: Aug 2014 Location: Denmark iTrader: (0) Garage List 2009 BMW 135i Coupe [0.00]	N54 and N54T difference? What is the difference between the N54 and N54T engine? Or in case i have misunderstood something, the difference between 135i and 1M engine. Is it only an ECU difference, or is it more substantial?
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08-14-2014, 09:48 AM	#2
Zombie1 Colonel 171 Rep 2,347 Posts Drives: BMW 135i 2010 Join Date: Jul 2012 Location: Island long iTrader: (6)	Better free flowing downpipes, ECU and not sure but possible better cooling. __________________ Mods:-Berkexhaust -alpinaB3flash -CobbAP -Cobb FMIC -ER charge pipe tialQ bov -M3 front sway bar -M3 subframe bushings -M3 front upper and lower control arms -M3 guide rods -M3 rear upper control arms -Mfactory LSD -defiv lockdown kit -TC Kline SA coilovers /camber plates- HP rear toe arms
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08-14-2014, 10:11 AM	#4
Freon Major 81 Rep 1,051 Posts Drives: 2009 135i Join Date: Nov 2007 Location: Indianapolis iTrader: (3)	Hadn't heard there was a downpipe difference before. Citation? __________________ 2009 BMW 135i 6MT Sport, AFE intake, Cobb AP, Apex 18x8.5+9.5, 255/275 PSS
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08-22-2014, 06:20 PM	#6
Asbjorn Captain 89 Rep 833 Posts Drives: Z4 N54 DCT (VTT GC lites) Join Date: Mar 2012 Location: European in China iTrader: (0)	The N54T in the Z4 35is and the N54T in the 1M are not entirely the same. The N54T in the Z4 is just a N54 but with different ECU software (higher hp + overboost). The N54T in the 1M uses yet another type of software, for instance it has an M-button-activated map available. In the Z4 you "just" get the dynamic driving switch which changes the throttle response but not the engine response. You need to install tuning software to get the M-button-like throttle response, but then it becomes "sensitive" all of the time, because there is no button to deactivate it. Finally the 1M has an extra water aux cooler as well as race cats instead of regular cats installed in the down-pipes. I believe it was mentioned in the 1M brochure as well.
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08-25-2014, 10:52 AM	#7
Jtoft New Member 3 Rep 14 Posts Drives: BMW 135i Join Date: Aug 2014 Location: Denmark iTrader: (0) Garage List 2009 BMW 135i Coupe [0.00]	Thanks exactly what i was looking for.
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