[Tony135]

I agree^. I'll be meting my n55 soon that already has Jb3, ER FMIC, ER Charge pipe, 4" cat less down pipe, and Berk Race exhaust. This thing will be a monster. I will kill n54s =)

[|2ed]

Originally Posted by shiv@vishnu

Wait until you see what an extra 2-3 degrees of ignition advance and meth will do to an n55. Since raising the boost isn't an option beyond a point, the only way we are going to make more power with a stock turbo'd n55 is to improve combustion efficiency. And the factory ignition advance curve is even more conservative than that of the n54. I wouldn't be surprised if there is another 20-25hp in there ready to come out with just a timing bump.

Here's what 2 deg did to a highly modded n54: http://www.e90post.com/forums/showthread.php?t=561615

:happy anim:

[Slops]

Originally Posted by shiv@vishnu

Wait until you see what an extra 2-3 degrees of ignition advance and meth will do to an n55. Since raising the boost isn't an option beyond a point, the only way we are going to make more power with a stock turbo'd n55 is to improve combustion efficiency. And the factory ignition advance curve is even more conservative than that of the n54. I wouldn't be surprised if there is another 20-25hp in there ready to come out with just a timing bump.

Here's what 2 deg did to a highly modded n54: http://www.e90post.com/forums/showthread.php?t=561615

Love it... meth next year for me

[jeff2.0t]

it was the same thing with the VAG 2.0T

The first version, the 2.0T FSI was vastly supported by aftermarket product. Than came in the next generation 2.0t TSI, a simpler more reliable and economical version of the FSI. For 2 years everyone was missing the FSI, everyone was yelling loud the FSI was better bla bla bla.

Than the aftermarket took the boat, they learned to work on the new TSi and it came out the TSI was a good engine (more reliable, better MPG, with plenty of tunning potential).

The same thing will occur. in my book the N54 is the crappy engine it eats up HPFP and injectors as I eat up T bones. Reliability is the most important thing.

[shockin330i]

Originally Posted by shiv@vishnu

Wait until you see what an extra 2-3 degrees of ignition advance and meth will do to an n55. Since raising the boost isn't an option beyond a point, the only way we are going to make more power with a stock turbo'd n55 is to improve combustion efficiency. And the factory ignition advance curve is even more conservative than that of the n54. I wouldn't be surprised if there is another 20-25hp in there ready to come out with just a timing bump.

Here's what 2 deg did to a highly modded n54: http://www.e90post.com/forums/showthread.php?t=561615

[FrankiE90]

shiv that's the best news i heard all week -
that and a blumpkin.

[Andrew@ET]

Originally Posted by FrankiE90

shiv that's the best news i heard all week -
that and a blumpkin.

[MarinoB]

Honestly stock for stock my N55 seems faster and pulls harder then my stock N54 did.

[theriz]

in time we will be faster then the N54's just give it sometime.

[eyim1988]

Originally Posted by theriz

in time we will be faster then the N54's just give it sometime.

hope so!

[Wild Squid]

Originally Posted by theriz

in time we will be faster then the N54's just give it sometime.

There is no possible way unless turbo swap. Its simple. They have 2 turbos, we have 1. And our 1 turbo is tiny.

[jeff2.0t]

Originally Posted by Wild Squid

There is no possible way unless turbo swap. Its simple. They have 2 turbos, we have 1. And our 1 turbo is tiny.

this argument of 2 turbo vs 1 doesn't mean anything.

[Q4P]

Originally Posted by Wild Squid

There is no possible way unless turbo swap. Its simple. They have 2 turbos, we have 1. And our 1 turbo is tiny.

This particular situation is the only time where this rings true. 99% of the time, a single will make mounds more power - the N55 problem is as you said - " the turbo is tiny", because once a turbo upgrade comes out which should be much easier than on the N54, I believe massive power can be made on this engine.

[Q4P]

Originally Posted by bz-e90

Did anyone bother reading this article? or you all naturally aspirated expert and know all about N55 Motor?

http://www.bmwblog.com/2010/09/12/dy...vs-n55-engine/

please read the full article look at the Dyno results.

Good job genius for stating the obvious... everyone knows that the N54 can currently produce more power, however; if a turbo upgrade is made, then there is true potential for the N55 to be great if not greater than the N54.

[Q4P]

You are talking to someone who has had both engines and driven both extensively, modded and stock - keep reading the articles and whatever makes you feel good, I know what they feel like from experience.

[tibra1]

Originally Posted by Questforpower

Good job genius for stating the obvious... everyone knows that the N54 can currently produce more power, however; if a turbo upgrade is made, then there is true potential for the N55 to be great if not greater than the N54.

Two turbos are better than one > and the capability to upgrade turbos on the n54 yields a larger gain.

[Q4P]

Originally Posted by tibra1

Two turbos are better than one > and the capability to upgrade turbos on the n54 yields a larger gain.

Werd?

Another vehicle / engine expert at hand. Then why are all twin turbo supras converted to large singles to create large power? What about the 8 second evo's running around and the 9-10 second sti's with single large turbos? Hell, why is everyone in the N54 world screaming for a large single to create mounds of power?

Two turbos are better for engine responsiveness, a quicker midrange and less turbo lag which is why BMW inevitably chose them for the N54 (to better daily driveablity). As far as power is concerned, a large singe will almost always create more power; especially up top where it counts for racing and creating large power numbers. In addition, when working with one turbo, you are dealing with less parts and a much less complex setup which automatically should increase reliability and decrease headaches on the track.

rebuttal?

[shockin330i]

Its funny how so few bmw owners have a clue about tuning and modding. I guess these are the first cars they have ever worked on. I honestly don't know what is taking so long for a single turbo n54. I guess it was lack of tuning tables. But vishnu already released a full tuning software which should make it a hell of a lot easier.

[Q4P]

Originally Posted by shockin330i

Its funny how so few bmw owners have a clue about tuning and modding. I guess these are the first cars they have ever worked on. I honestly don't know what is taking so long for a single turbo n54. I guess it was lack of tuning tables. But vishnu already released a full tuning software which should make it a hell of a lot easier.

That with a combination of a proper fueling system. Vishnu claims to have it but has anyone seen it or how it actually works?

[Wild Squid]

You guys who think stock for stock N55 feels faster than N54 are delusional. That or maybe your N55 engine is different from mine. I've driven N54 only a few times, and it always feels faster than my N55.

[Wild Squid]

Originally Posted by Questforpower

Werd?

Another vehicle / engine expert at hand. Then why are all twin turbo supras converted to large singles to create large power? What about the 8 second evo's running around and the 9-10 second sti's with single large turbos? Hell, why is everyone in the N54 world screaming for a large single to create mounds of power?

Two turbos are better for engine responsiveness, a quicker midrange and less turbo lag which is why BMW inevitably chose them for the N54 (to better daily driveablity). As far as power is concerned, a large singe will almost always create more power; especially up top where it counts for racing and creating large power numbers. In addition, when working with one turbo, you are dealing with less parts and a much less complex setup which automatically should increase reliability and decrease headaches on the track.

rebuttal?

Single turbo upgrade is really a moot point, not many people are going to be getting that upgrade anyways. How much do you think its going to cost? $5K installed? Not many people want to spend that kind of money, especially your typical daily commuter who just wants to have a little fun on the way to work.

[Q4P]

Originally Posted by Wild Squid

Single turbo upgrade is really a moot point, not many people are going to be getting that upgrade anyways. How much do you think its going to cost? $5K installed? Not many people want to spend that kind of money, especially your typical daily commuter who just wants to have a little fun on the way to work.

Agreed, but if that's the case then get a larger FMIC and a nice DP with tune and call it a day... be happy with the power you have, if it's not enough and wanted a little more power without getting a turbo upgrade or meth,or preferred to stay stock then the N54 would have clearly suited your needs better. If it's power potential you're after, at the present the N54 is still better... but if a proper turbo upgrade comes out for the N55; then tides may change.