6 or 4

Sorry but a 6 everytime in the E89, the N20 I had was pants, in fact the worst engine I ever had the misfortune to own in a car, well you did ask :) Depending on the age of Zed and if its an early model with the N20 I would seriously pass mapping it as they are known to run hot and crack the head. I think the later N20s were modified by BMW.

Tim.
 
Twin Turbo said:
R.E92 you normally talk a lot of sense - but on this matter, I have to completely disagree

My experience of the N54 was based on three years of ownership and over 50,0000 miles - that was served and maintained by BMW.

The big factor in difference MPG figures is the driver and the roads they used. This can fluctuate massively when comparing like for like.

From my personal experience, and not based on making an assumption that you can get incorrect conclusions.

Same Driver, same roads - different car
Click to expand...

I agree that MPG differs greatly between someone doing big motorway miles and someone commuting in central London but Jabber, who started the topic, will be doing the same routes regardless which engine he ends up with.

Using a tool like Fuelly you can get a better picture of what mileage people actually get. Comparing 35i and 35is figures with 28i figures you will see the MPG gap isn't that wide.

I don't see your one sample of a 335i getting 20mpg to be in any way indicative of the actual fuel economy of the N54 engine. You'd be hard pressed to find another N54 user getting 20mpg unless they have thermostat issues or their injectors are completely screwed.
 
TitanTim said:
Sorry but a 6 everytime in the E89, the N20 I had was pants, in fact the worst engine I ever had the misfortune to own in a car, well you did ask :) Depending on the age of Zed and if its an early model with the N20 I would seriously pass mapping it as they are known to run hot and crack the head. I think the later N20s were modified by BMW.

Tim.
Click to expand...

The only disaster I've heard of was a car mapped to over 350bhp (at the wheels!) & subjected to competition use on a racetrack, never heard of a road car suffering anything similar after a remap?
Rob
 
I'm going to get AMD to remap mine. They mapped my TT and have an excellent reputation. They think 300bhp is achievable but they're know for nice smooth maps, not huge peaks to exaggerate peak bhp.
 
SteveSmith said:
I'm going to get AMD to remap mine. They mapped my TT and have an excellent reputation. They think 300bhp is achievable but they're know for nice smooth maps, not huge peaks to exaggerate peak bhp.
Click to expand...

Be interesting how a remapped 28i will compare against my JB4 version

However, I have found driving in Sport plus mode feathering power out of corners quite tricky - however only experienced this on track.

Prefer to drive in comfort mode but DSC turned off
 
To come back to the core question...it depends whether you are influenced by other factors such as goodies, condition, mileage, number of owners as well?

As discussed elsewhere any of the N20 4 pots 1.8i, 2.0i, 2.8i can be re-mapped to around 280 bhp with no apparent loss of integrity and arguably greatly improved drivability..

If you need more than 300bhp you could argue that you need to look at other cars...

For me it's the body shape, wheels, colour, interior trim and goodies that matter..I couldn't get what I wanted at the time at any price, and the 6 pot versions had a price premium by around 30% for similar or less goodies...

I think the 6 pot argument boils down to one or more of the following

More is better
My sex life will be immeasurably improved by driving a 6 pot
A six pot sounds so much better than a 4 pot
Hero worship within the Z4 forum or BMW owners club matters to me

The flip side is

I see so many early Z4 that are in immaculate condition with personal plates and I can't easily work out/ get bothered about whatever engines they have..they just look so good...

Given that a Z4 is a 99.5% emotional / impratical purchase you should do what floats your boat..not others..IMHO

All I can say is that for someone who went on the 6 pot journey and drove a couple I ended up with a 4 pot.

However, for me, the transformational event was the remap which completely changed how I perceived the car...

Not sure if any of hat helps? :x 8)
 
TONYL said:
Buy the 4 pot.....and be forever thinking i should have got the 6....your call!
Click to expand...

Nope, I started with a 6 & then got another 6 which I liked very much-I now have a turbo 4 and its everything I need, plenty of power and very economical :thumbsup:
Rob
 
i'd much rather have a 2.0 4 pot turbo than that god awful 23i 6 pot! They are slow as fook! My mates got one a nice low miler, its alright if you wanna sit on the motorway cruising about but for a chuckable sports car its very lethargic. if it was a 35i that was on offer though it would be a no brainer - six pot all the way.
 
The remapped 28i is a really good car. Mine mapped to 303 hp with 378 ft.Ibs of torque. In ideal conditions you can get 40mpg on a long journey. It feels pretty quick with the 8 speed auto . Could even be sub 5 secs 0-60. It is the sensible choice( its not that sensible though :evil: ).
I really miss my 3.4S Boxster though. I like cheaper tax better economy but a 6 cylinder has that extra character. Tough call between 4 and 6 pot.
 
jamie_z4 said:
i'd much rather have a 2.0 4 pot turbo than that god awful 23i 6 pot! They are slow as fook! My mates got one a nice low miler, its alright if you wanna sit on the motorway cruising about but for a chuckable sports car its very lethargic. if it was a 35i that was on offer though it would be a no brainer - six pot all the way.
Click to expand...

Thats a bit harsh :lol:
We have had ours for 4 years now and yes there are definately faster models around but it isnt what you would call "slow as fook" :lol:
If they were as bad as you say Im sure we would have gotten fed up with ours and changed for something with more grunt.
Dont think I have had a problem keeping up with others on forum runs either, maybe Im wrong and was holding people behind up :lol:
If we were looking for a fast car I dont think BMW would be top of the list.
For an open top car I dont think its all about speed anyway.
 
Nictrix said:
jamie_z4 said:
i'd much rather have a 2.0 4 pot turbo than that god awful 23i 6 pot! They are slow as fook! My mates got one a nice low miler, its alright if you wanna sit on the motorway cruising about but for a chuckable sports car its very lethargic. if it was a 35i that was on offer though it would be a no brainer - six pot all the way.
Click to expand...

Thats a bit harsh :lol:
We have had ours for 4 years now and yes there are definately faster models around but it isnt what you would call "slow as fook" :lol:
If they were as bad as you say Im sure we would have gotten fed up with ours and changed for something with more grunt.
Dont think I have had a problem keeping up with others on forum runs either, maybe Im wrong and was holding people behind up :lol:
If we were looking for a fast car I dont think BMW would be top of the list.
For an open top car I dont think its all about speed anyway.
Click to expand...

Sorry if you found it offensive! I just remember being massively underwhelmed when I drove my mates. I've had 7 z4s now all of them either 2.5i or 3.0 e85s an e86s so I just guess I was expecting it to be at Least as quick as the e85 2.5i I just found it really lethargic on pick up and didn't have the torque to accelerate when at low speeds in higher gears! Like I say only my opinions, they are all like arse holes we all have one :D
 
jamie_z4 said:
Nictrix said:
jamie_z4 said:
i'd much rather have a 2.0 4 pot turbo than that god awful 23i 6 pot! They are slow as fook! My mates got one a nice low miler, its alright if you wanna sit on the motorway cruising about but for a chuckable sports car its very lethargic. if it was a 35i that was on offer though it would be a no brainer - six pot all the way.
Click to expand...

Thats a bit harsh :lol:
We have had ours for 4 years now and yes there are definately faster models around but it isnt what you would call "slow as fook" :lol:
If they were as bad as you say Im sure we would have gotten fed up with ours and changed for something with more grunt.
Dont think I have had a problem keeping up with others on forum runs either, maybe Im wrong and was holding people behind up :lol:
If we were looking for a fast car I dont think BMW would be top of the list.
For an open top car I dont think its all about speed anyway.
Click to expand...

Sorry if you found it offensive! I just remember being massively underwhelmed when I drove my mates. I've had 7 z4s now all of them either 2.5i or 3.0 e85s an e86s so I just guess I was expecting it to be at Least as quick as the e85 2.5i I just found it really lethargic on pick up and didn't have the torque to accelerate when at low speeds in higher gears! Like I say only my opinions, they are all like arse holes we all have one :D
Click to expand...

I didnt find it offensive, its good to hear others opinions even if you dont agree with them.
I think the E89s 2.5 litre engine has less power than the E85/86 2.5 litre engine, that and a bit more weight will make it a bit slower.
 
jamie_z4 said:
Nictrix said:
jamie_z4 said:
i'd much rather have a 2.0 4 pot turbo than that god awful 23i 6 pot! They are slow as fook! My mates got one a nice low miler, its alright if you wanna sit on the motorway cruising about but for a chuckable sports car its very lethargic. if it was a 35i that was on offer though it would be a no brainer - six pot all the way.
Click to expand...

Thats a bit harsh :lol:
We have had ours for 4 years now and yes there are definately faster models around but it isnt what you would call "slow as fook" :lol:
If they were as bad as you say Im sure we would have gotten fed up with ours and changed for something with more grunt.
Dont think I have had a problem keeping up with others on forum runs either, maybe Im wrong and was holding people behind up :lol:
If we were looking for a fast car I dont think BMW would be top of the list.
For an open top car I dont think its all about speed anyway.
Click to expand...

Sorry if you found it offensive! I just remember being massively underwhelmed when I drove my mates. I've had 7 z4s now all of them either 2.5i or 3.0 e85s an e86s so I just guess I was expecting it to be at Least as quick as the e85 2.5i I just found it really lethargic on pick up and didn't have the torque to accelerate when at low speeds in higher gears! Like I say only my opinions, they are all like arse holes we all have one :D
Click to expand...

Jamie, is that why you was doing an Danny Dyer impression @ Santa Pod :rofl:
 
brittas said:
The remapped 28i is a really good car. Mine mapped to 303 hp with 378 ft.Ibs of torque. In ideal conditions you can get 40mpg on a long journey. It feels pretty quick with the 8 speed auto . Could even be sub 5 secs 0-60. It is the sensible choice( its not that sensible though :evil: ).
I really miss my 3.4S Boxster though. I like cheaper tax better economy but a 6 cylinder has that extra character. Tough call between 4 and 6 pot.
Click to expand...

Hi, are you sure you have that torque figure correct & it's not measured in newton metres? Got a rolling road print out you could post with some numbers on it?
Rob
 
Twin Turbo said:
jamie_z4 said:
Nictrix said:
Thats a bit harsh :lol:
We have had ours for 4 years now and yes there are definately faster models around but it isnt what you would call "slow as fook" :lol:
If they were as bad as you say Im sure we would have gotten fed up with ours and changed for something with more grunt.
Dont think I have had a problem keeping up with others on forum runs either, maybe Im wrong and was holding people behind up :lol:
If we were looking for a fast car I dont think BMW would be top of the list.
For an open top car I dont think its all about speed anyway.
Click to expand...

Sorry if you found it offensive! I just remember being massively underwhelmed when I drove my mates. I've had 7 z4s now all of them either 2.5i or 3.0 e85s an e86s so I just guess I was expecting it to be at Least as quick as the e85 2.5i I just found it really lethargic on pick up and didn't have the torque to accelerate when at low speeds in higher gears! Like I say only my opinions, they are all like arse holes we all have one :D
Click to expand...

Jamie, is that why you was doing an Danny Dyer impression @ Santa Pod :rofl:
Click to expand...

Oops :lol:
 
Smartbear said:
brittas said:
The remapped 28i is a really good car. Mine mapped to 303 hp with 378 ft.Ibs of torque. In ideal conditions you can get 40mpg on a long journey. It feels pretty quick with the 8 speed auto . Could even be sub 5 secs 0-60. It is the sensible choice( its not that sensible though :evil: ).
I really miss my 3.4S Boxster though. I like cheaper tax better economy but a 6 cylinder has that extra character. Tough call between 4 and 6 pot.
Click to expand...

Hi, are you sure you have that torque figure correct & it's not measured in newton metres? Got a rolling road print out you could post with some numbers on it?
Rob
Click to expand...

http://www.z4-forum.com/forum/viewtopic.php?t=96438

Its probably quicker than mine - with that torque
 
I don't remember seeing that, must be my age :lol:
That's a seriously high torque output, got to be sailing close to the wind :o
Rob
 
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