128i love

[TheSt|G]

Originally Posted by speedbird

I get 19 mixed driving. No more, no less.

Of course highway trips it's higher but I think it's a personal victory if I average 20 mpg

Which is why its about smiles per gallon instead of miles.

If I wanted fuel efficiency I would have purchased a Tesla.

[speedbird]

I completely agree. 19/20 mixed isn't bad for what the car is.

[Rantor]

I don't independently check my mileage, my 128i reports an average of 24 miles per gallon. That is HOV lane at 65-80 mph to work, county parkway (50-70 mph) around my neighborhood and doing as many local errands as possible in my wife's Volvo XC70. Mostly use Shell 93 Octane.

Noticed in Germany that they offer 100 octane at some autobahn stations. Realize the scale is different, but I think I want that.

[MarkkyyMan]

According to the car I average about 24.5mpg, don't know how accurate it is.

[Fume]

Most of my car's miles are from my commute to work and I'm getting 20mpg driving mostly city streets + rush hour stop and go highway. Not terrible but definitely not good by today's standards.

Edit: this is by measuring both at the gas pump + noting mileage and by looking at the trip MPG. I find it to be pretty accurate so far.

[Obioban]

Originally Posted by Rantor

I don't independently check my mileage, my 128i reports an average of 24 miles per gallon. That is HOV lane at 65-80 mph to work, county parkway (50-70 mph) around my neighborhood and doing as many local errands as possible in my wife's Volvo XC70. Mostly use Shell 93 Octane.

Noticed in Germany that they offer 100 octane at some autobahn stations. Realize the scale is different, but I think I want that.

It's the same as our 93.

[Iron Man]

I get around 22-23 mpg. Mostly suburban driving, with a few Italian tune-ups when I can. On the highway driving I've done, I got around 28-30 mpg, going around 70-80 mph.

[631twentyeighteye]

25 MPG: 95% highway between 70-80 and usually accelerating decently hard to 3k, occasionally 4-5k, rarely 7k.

Modded as per sig: 26MPG same conditions as above.

Around town it drops quickly to 20 if i'm lucky. I have a heavy foot and typically shift at 3k rpm when i'm driving casually and higher than that if i'm driving spiritedly. I get about 280-300 miles out of 3/4 tank(i always fill up at 1/4 tank) regardless of how i'm driving. I don't have the opportunity to hoon around constantly so my mileage usually stays pretty good. Surprisingly good for a NA 3.0 6 cyl if you ask me.

I can imagine seeing 30+ if you do 55 and are easy on the skinny pedal.

[chris82]

I gotten around 20mpg the last two fill ups. This is mostly stop and go during awful rush hour traffic. I've changed my route to all highway now so we'll see how my MPG goes on my next fill up

[Kgolf31]

Random shot from last weekend, but still 128i love

[Taskmaster]

Hmm, the 1 series isn't much lighter/quicker - is it purely an aerodynamic issue, or do you have a higher final drive?

[TheSt|G]

Originally Posted by Rantor

I don't independently check my mileage, my 128i reports an average of 24 miles per gallon. That is HOV lane at 65-80 mph to work, county parkway (50-70 mph) around my neighborhood and doing as many local errands as possible in my wife's Volvo XC70. Mostly use Shell 93 Octane.

Noticed in Germany that they offer 100 octane at some autobahn stations. Realize the scale is different, but I think I want that.

100 RON(Euro rating) is equal to ~93 AKI(US rating). You aren't getting anywhere with that.

Originally Posted by TheAxiom

Hmm, the 1 series isn't much lighter/quicker - is it purely an aerodynamic issue, or do you have a higher final drive?

The car is shaped like a greenhouse, and the coupe was not part of the original design.

[631twentyeighteye]

Drove my dads 08 335i n54 and my god, i never noticed the turbo lag until today. I haven't driven it in forever and i drove it right after getting out of my car so it was a pretty fair comparison. The throttle response is certainly a less crisp and going WOT results in IMO significant lag. It's not as bad as my old turbo diesel jeep by any means, but it's very noticeable coming from an N52/NA car.

That being said, once the boost kicks in its quiick. Not my style though.

[Taskmaster]

Originally Posted by 631twentyeighteye

Drove my dads 08 335i n54 and my god, i never noticed the turbo lag until today. I haven't driven it in forever and i drove it right after getting out of my car so it was a pretty fair comparison. The throttle response is certainly a less crisp and going WOT results in IMO significant lag. It's not as bad as my old turbo diesel jeep by any means, but it's very noticeable coming from an N52/NA car.

That being said, once the boost kicks in its quiick. Not my style though.

I just don't like the power drop off near redline. I like how the N52 pegs the redline in all gears and continues to pull. I bet headers will make that even better...

[kobeballer96]

Originally Posted by 631twentyeighteye

Drove my dads 08 335i n54 and my god, i never noticed the turbo lag until today. I haven't driven it in forever and i drove it right after getting out of my car so it was a pretty fair comparison. The throttle response is certainly a less crisp and going WOT results in IMO significant lag. It's not as bad as my old turbo diesel jeep by any means, but it's very noticeable coming from an N52/NA car.

That being said, once the boost kicks in its quiick. Not my style though.

Like any car, he gets a tune the drop of power towards redline would be fixed. Heat soak or not, boost tapered ect ect. It's too easy. I guess your style is slow, also I don't know why everyone say they have boost lag,those turbos are baby size. I don't think you guy really know the definition of turbo lag. Drive a car with a 6262 or 7576 gt35r ect ect. You'll know what boost lag is then and when boost kicks it likes like wow! Biggest rush. N55/54 are running twin scroll, turbos meaning lol there virtually like no lag. Also ever heard of brake boosting?

[TheSt|G]

Originally Posted by kobeballer96

Like any car, he gets a tune the drop of power towards redline would be fixed. Heat soak or not, boost tapered ect ect. It's too easy. I guess your style is slow, also I don't know why everyone say they have boost lag,those turbos are baby size. I don't think you guy really know the definition of turbo lag. Drive a car with a 6262 or 7576 gt35r ect ect. You'll know what boost lag is then and when boost kicks it likes like wow! Biggest rush. N55/54 are running twin scroll, turbos meaning lol there virtually like no lag. Also ever heard of brake boosting?

Big lag or medium lag, lag is present. And that's before we get into throttle response...

[631twentyeighteye]

Originally Posted by kobeballer96

Like any car, he gets a tune the drop of power towards redline would be fixed. Heat soak or not, boost tapered ect ect. It's too easy. I guess your style is slow, also I don't know why everyone say they have boost lag,those turbos are baby size. I don't think you guy really know the definition of turbo lag. Drive a car with a 6262 or 7576 gt35r ect ect. You'll know what boost lag is then and when boost kicks it likes like wow! Biggest rush. N55/54 are running twin scroll, turbos meaning lol there virtually like no lag. Also ever heard of brake boosting?

uhh, i'm aware of how small the turbo(s) are and regardless of that there's still boost lag. I've also been in a bunch of FBO n54/n55's and the more tuned they are, the worse the lag is. It's a fact of physics man. Adding a tune= way more boost lag waiting for them to hit peak boost.

I come from a turbo diesel jeep(that i ran 20PSI on) where boost lag was extremely prominent, it's not like i'm not educated.. Boost is fun yeah, but its pretty fuckin useless in most real world experiences(high PSI with bigger turbo's at least. Not counting tiny little 4 banger turbos on most cars. Even though i still notice boost lag on my moms VW 2.0T). Ever try crossing a 4 lane road in a rush between a bunch of city traffic? yeah boost lag isn't very fun then. Ever try rock crawling? Yeah boost lag isn't very fun for that either.

Boost is fun, i get it and i don't disagree. It's just not for everyone. And just because something is NA doesn't mean it's slow. My old 600cc streetbike would shit on any of these cars 0-150mph. And in the twistys, all these guys with FBO n54/n55 have no advantage on my little n52, I've proven that up at bear mountain already(twisty mountain roads FYI). The funny part is right out of the corner's i'd gain distance while all of those guys are waiting for their boost to build I prefer turbo's on my diesels and superchargers on my gasoline engines.


edit: and touching on throttle response like the stig mentioned, it's not even close. Tap the throttle on n54 and tap the throttle on n52 and it's immediately apparent that the n52 is much more crisp and quick revving. again, not bashing the n54 or n55 like everyone always assumes, it's just not for everyone. a high horsepower vehicle does not necessarily equal a fun vehicle. That is why i sold my street bike and got a 400CC 30HP dual sport.

[andrey_gta]

Another n52 race engine
Instagram edition

[Obioban]

^when is an N52 no longer an N52?

[Suprgnat]

Originally Posted by Obioban

^when is an N52 no longer an N52?

When it didn't start out as one in the first place?

"nickel liners taken out. Replaced with new steel liners."

N52 has no liners and cannot be bored.

[cmcdonald]

Originally Posted by Suprgnat

When it didn't start out as one in the first place?

"nickel liners taken out. Replaced with new steel liners."

N52 has no liners and cannot be bored.

The N52 does have liners but they are aluminum and the magnesium block is cast around them making them unremovable and essentially part of the block itself. So I do question the validity of the IG post. Even if it were valid mixing magnesium and steel would be a bad idea. The coefficient of thermal expansion for magnesium and aluminum are very similar, probably why BMW made this choice. The coefficient of thermal expansion for steel is half that of magnesium. When you get materials with drastically different CTE values going through heat cool cycles you get cracks and failures. Overall even though it looks nice the IG engine is a fail in my opinion.

[TheSt|G]

Originally Posted by cmcdonald

The N52 does have liners but they are aluminum and the magnesium block is cast around them making them unremovable and essentially part of the block itself. So I do question the validity of the IG post. Even if it were valid mixing magnesium and steel would be a bad idea. The coefficient of thermal expansion for magnesium and aluminum are very similar, probably why BMW made this choice. The coefficient of thermal expansion for steel is half that of magnesium. When you get materials with drastically different CTE values going through heat cool cycles you get cracks and failures. Overall even though it looks nice the IG engine is a fail in my opinion.

Frankly, I'm not sure what engine they are even think they are talking about.