[R N M]

I have the updated B58 in my 2020 X3 M40i.
The engine is GREAT but its not close to being as good as the S55 in my M3 Comp.

[GOLFFRR]

i say this all the time, m340 is a monster! always shocks me when I drive one

[Straight6Dave]

Originally Posted by Thescout13

The engine, the brakes, etc are light years better than the M340 and it's B58, so get out of here with that nonsense.

You're never going to agree with me but the S55 isn't an awesome engine and I'd much rather have the B58 or something based on it. It's a stronger design that's capable of handling a lot more power than the S55. Not to mention the sound of the B58 is way better than the S55. No crank hubs to worry about either.

The B58 is a beast I'm really looking forward to seeing what the S58 does in the new M3/M4.

Personally, I bought an M340i which I'll probably trade in for the new M3 in a couple years if the whole economy hasn't hit the toilet by then.

[akkando]

Originally Posted by daap1193

You have your opinion I respect it, you don´t want to hear a different opinion so theres no much room for debate there. For the DPs, what I know is that they are some regular DPs with no brand on them made for my tunners in the USA, Im not sure why it gave the car that power increase, don´t think is the DPs desing they just look like regular DPs from other brands, but its looks like u know more so I just attached some pics maybe I´m wrong. What I think, my car is a EU spec with no OPFs, thats what they send to my country, so BMW cranks UP the boost by 0.2 bar to compensate, but if theres no OPFs any improvement in the exhaust will give better results, but im just speculating. If you want to try them you can contact big boost turbo LLC, is the USA brand owned by my tunner, they have try them on two M2C here and the results were exactly the same.
I just attached some other pics so u can check the dyno numers by yourself.

hmm that is interesting if it's an opf spec car without opf then you would in theory make more power than an untuned US car.

[ANP202]

Originally Posted by Straight6Dave

You're never going to agree with me but the S55 isn't an awesome engine and I'd much rather have the B58 or something based on it. It's a stronger design that's capable of handling a lot more power than the S55. Not to mention the sound of the B58 is way better than the S55. No crank hubs to worry about either.

The B58 is a beast I'm really looking forward to seeing what the S58 does in the new M3/M4.

Personally, I bought an M340i which I'll probably trade in for the new M3 in a couple years if the whole economy hasn't hit the toilet by then.

Haha... this guy... there’s nothing special about B58, it’s a mainstream BMW engine. S55 was developed and tuned by M division. I’m glad you like your m340 but cmon dude, it’s glorified 340i.

[rjd598]

Originally Posted by DK__LA

AWD is AWD

I think this is the best comment on this thread.

This isn't about what is "better" because it's all subjective. To me the M2C is more impressive than the M340i xDrive. Why? Because it's RWD vs. AWD as mentioned above.

I have zero loyalty to any engine and I love the way my B58 sounds over S55, but have you ever seen a rolling race with an S55? Put these two head to head starting at around 30-40mph and see what happens. xDrive is really what narrowed the gap between these two cars from a 0-60mph and 1/4 mile time perspective. After that I don't think anyone would question which would outperform the other...

Originally Posted by ANP202

Haha... this guy... there’s nothing special about B58, it’s a mainstream BMW engine. S55 was developed and tuned by M division. I’m glad you like your m340 but cmon dude, it’s glorified 340i.

I second this as a B58 owner. It's a great engine, but it's also been out for some time now...everyone is just jumping on the bandwagon.

[themnmd]

Originally Posted by Thescout13

479 whp? That would be the first stock M2 that read that high to the wheels in history.

Also, it kind of looks like different days/temperatures.

Not saying the M340 cannot scoot fast as hell, but nothing about this is near scientific.

Oh and I forgot, regardless of whether an AWD M340 is fast in straight line, take them both to the same track or the same canyon and tell me with a straight face you would rather have the M340 than an actual M car.

We went to an M Track Days at Thermal with BMWCCA back in January and I drove both back to back on their autocross course and the deficiencies on the M340 in comparison to the M2C in control, planted feeling, capability is very apparent.

Though the M340 was not a bad car all said. Definitely better than previous 335/340s compared to their respective M iterations.

Probably going to get shit on for this post, so let me just say that this is my subjective opinion, and I concede that the M340 is definitely quick.

M2 's are better suited for the track than M340, given it's tighter suspension. For every day use the M340 is a damn nice car. I love mine (completely stock).

[themnmd]

Originally Posted by Bahn360Photo

Just wait for m3 and dont argue...

It will beat the hell out of most cars on the road and probably m5 too

If I could have waited for a M3 I would have. Maybe in few years

[phantom7835]

Lots of things to question in this post...

[G444]

Originally Posted by R N M

I have the updated B58 in my 2020 X3 M40i.
The engine is GREAT but its not close to being as good as the S55 in my M3 Comp.

Put S55 in that big fat cabinet of X3 and wont be more so great.

[jmg]

The M2C isn't geared nor tuned for drag racing and it's RWD compared to AWD. I've driven the M2 and the M340i on the track several times. They are both impressive, but the M2C was more fun, more lively, and turned out faster times.

These drag and 0-60 comparisons are fun, but nearly meaningless considering what the M2 was actually designed for. Remember, the M240i gave the M2 a run for its money and iirc beat it in the 1/4 too. I've seen literally zero M240i's being competitive on a real track since for a reason: straight line speed is just a small part of the equation, and it's not even the most important part.

[jmg]

Originally Posted by Straight6Dave

You're never going to agree with me but the S55 isn't an awesome engine and I'd much rather have the B58 or something based on it. It's a stronger design that's capable of handling a lot more power than the S55. Not to mention the sound of the B58 is way better than the S55. No crank hubs to worry about either.

The B58 is a beast I'm really looking forward to seeing what the S58 does in the new M3/M4.

Personally, I bought an M340i which I'll probably trade in for the new M3 in a couple years if the whole economy hasn't hit the toilet by then.

The S55 is the most reliable and most powerful M3/4 engine yet and it still has more power and torque than a B58 it's not great?

Yes, the B58 is designed to potentially have more power, but then it becomes a S58. The B58 is great too, but you are comparing two different engines really and I'd rather be in a proven S55 that can handle the abuses of a track day than an 3 series equipped B58 that isn't designed to be thrashed lap after lap. It's a street car.

[spuntyb]

Originally Posted by Thescout13

479 whp? That would be the first stock M2 that read that high to the wheels in history.

Also, it kind of looks like different days/temperatures.

Not saying the M340 cannot scoot fast as hell, but nothing about this is near scientific.

Oh and I forgot, regardless of whether an AWD M340 is fast in straight line, take them both to the same track or the same canyon and tell me with a straight face you would rather have the M340 than an actual M car.

We went to an M Track Days at Thermal with BMWCCA back in January and I drove both back to back on their autocross course and the deficiencies on the M340 in comparison to the M2C in control, planted feeling, capability is very apparent.

Though the M340 was not a bad car all said. Definitely better than previous 335/340s compared to their respective M iterations.

Probably going to get shit on for this post, so let me just say that this is my subjective opinion, and I concede that the M340 is definitely quick.

Agree. All good points.

All I will say is the B58 is not to be trifled with. Hell of a motor. And the S58 is just batshit insane, but that's a different story...

[spuntyb]

Originally Posted by jmg

The S55 is the most reliable and most powerful M3/4 engine yet and it still has more power and torque than a B58 it's not great?

Yes, the B58 is designed to potentially have more power, but then it becomes a S58. The B58 is great too, but you are comparing two different engines really and I'd rather be in a proven S55 that can handle the abuses of a track day than an 3 series equipped B58 that isn't designed to be thrashed lap after lap. It's a street car.

Bingo. The S55 was designed from the start to be more efficient and reliable than the S65. That was the entire goal of the F8x program, and I have to say they kind of nailed it. The B58 is fantastic, but I'd take the S55 all day every day over it. S58? Very different story...

[Poiseuille]

well, on the plus side the M340 guys seem to have crowded out the Tesla fanboiz so it's a win/win.

[R N M]

Originally Posted by G444

Put S55 in that big fat cabinet of X3 and wont be more so great.

I’m not talking about just speed.

S55 responds and revs much different, its more aggressive, has much better cooling, and has 2 turbos.

Its a superior engine in all respects.

Paired with the 7speed DCT - its on another level.

[DG20]

So many butthurt F8x owners here

[yousefnjr]

Originally Posted by Thescout13

I didn't just have limited time in the M2C at a track experience, only the M340. I have had 6+ years of seat time in S55s between two F80s and now an M2C with a decent amount of miles on it and a ton of canyon and track time. And I can tell you that the M2C is absolutely what everyone says it is - and 100% the best car I have ever owned and I have been through a lot. So your experience is contrary to nearly EVERY OTHER PERSON who has owned it has said. The engine, the brakes, etc are light years better than the M340 and it's B58, so get out of here with that nonsense.

As to your dyno, I'll say the same I said before with out a tune those just downpipe numbers don't make any sense and would be the highest reading downpipes in history and you need to post the link to them on the S55 forum because you found the gold standard.

All that said, sure we can disagree, it's opinion. No worries.

Doesn’t sound like it’s no worries lol

[ASAP]

I would only given one recommendation to someone buying an M340i... definitely don't get one new... bcuz a slightly used one will save you a lot of money lol.

[Drj161]

Where's our resident f8x hater? This post must be making him wet.

[TrentMeister]

Originally Posted by daap1193

[IMG][/IMG]

Im driving the M2C for over 18000 kms, both cars are good but if you compare them just by what you feel on track you answer always going to be the same, but believe me I'm a fan of race cars and race for several years but the m2c isn't the great M that everybody talks about, BMW lent you the car before you buy it on the track and for a few laps at least thats my experience, but that doesn't give you the full perspective of the car, as an long time owner I can tell that the S55 is not a good engine, brakes start to fade even in street use, suspension is way to stiff and don't let you put the power on the ground, the diff cracks every time you put it on a slope and finally the car is extremely heavy. Would I buy it again, no,

Here is the dyno graph first number is with DPS and the second one Stock if you doubt It put that power on the wheels. I'm not giving you shit for your post, really apréciate different opinions I'm just giving my perspective as a long time owner and a person that beats the shit out of the cars Hahahahaha, and finally we have tested them in at the same time but the results are always the same, the M340 goes off the line first and stays there most of the time, I'm able to catch after 800 mts more o less but there's no third person to film yet.

What a rebel

[TrentMeister]

And so beings the superiority complex of b58 owners over s55 guys