M4 CS achieves a 12.01 @ 122.6mph 1/4 mile

[CanAutM3]

Originally Posted by melvyn

Anyone know if the CS4 is running full titanium exhaust.

No. It is running the standard stainless steel exhaust with a different tuning and single walled stainless steel tips (GTS look alike).

[melvyn]

Originally Posted by CanAutM3

No. It is running the standard stainless steel exhaust with a different tuning and single walled stainless steel tips (GTS look alike).

Thanks buddy,
I don't know the standard US spec, over here in UK they are marketing it with the following standard options in attachment.
We cannot work out what the materials are as it looks like it's a mixture of metals on a CS 4 ,CS 3 starting to enter production now.
I have ordered an M3CS on the understanding it had a full ti exhaust as advertised.
How do you see the standard options below, would you expect a ti exhaust or not

[CanAutM3]

Originally Posted by melvyn

Thanks buddy,
I don't know the standard US spec, over here in UK they are marketing it with the following standard options in attachment.
We cannot work out what the materials are as it looks like it's a mixture of metals on a CS 4 ,CS 3 starting to enter production now.
I have ordered an M3CS on the understanding it had a full ti exhaust as advertised.
How do you see the standard options below, would you expect a ti exhaust or not

That’s a mistake. Local BMW distributors are notorious for making mistakes in their literature. They probably just copied that from the GTS.

If you look at all the picture of CS M3 and M4, they all have the standard exhaust can hanging behind the bumper. Compare it to the titanium exhaust can of the MPE or the GTS.

[melvyn]

Originally Posted by CanAutM3

That’s a mistake. Local BMW distributors are notorious for making mistakes in their literature. They probably just copied that from the GTS.

If you look at all the picture of CS M3 and M4, they all have the standard exhaust can hanging behind the bumper. Compare it to the titanium exhaust can of the MPE or the GTS.

Yes, I know it's the same as the standard can.The point is , it's bad marketing yet again .Part of that doc , also says the 763 wheels would be 9.5 and 10.5.
I can't remember if the Dtm ran those wheel widths.
CS 3 started prod on 09 March for UK run, anyone buying to them standard specs would be p1ssed.
Incidentally, the 100 coming to UK are all pre specced by BM with various options and you have to take your pick as you cannot change any of the spec

[CanAutM3]

Originally Posted by melvyn

Yes, I know it's the same as the standard can.The point is , it's bad marketing yet again .Part of that doc , also says the 763 wheels would be 9.5 and 10.5.
I can't remember if the Dtm ran those wheel widths.
CS 3 started prod on 09 March for UK run, anyone buying to them standard specs would be p1ssed.
Incidentally, the 100 coming to UK are all pre specced by BM with various options and you have to take your pick as you cannot change any of the spec

Yup, that’s an error on the wheel widths also. Very poor marketing/communication indeed.

The M4 DTM had the same 666M wheels in 9.5” and 10.5” widths as the GTS, albeit in Orbit Grey. The 763M wheels have the standard 9” and 10” widths.

[WAY]

So the CS exhaust is not the M Performance exhaust but the standard M4 item?

[CanAutM3]

Originally Posted by WAY

So the CS exhaust is not the M Performance exhaust but the standard M4 item?

Yes. Albeit with different welded on single walled tips and probably a different tune.

The MPE on my current M4 will be tranferred over to my CS when I get it it.

[melvyn]

Originally Posted by CanAutM3

Yes. Albeit with different welded on single walled tips and probably a different tune.

The MPE on my current M4 will be tranferred over to my CS when I get it it.

You guys not been getting probs with the welds cracking on the MPE,some here have been replaced 2-3 times.

Your right in your assumption , the CS has got a different tune for exhaust.

[CanAutM3]

Originally Posted by melvyn

You guys not been getting probs with the welds cracking on the MPE,some here have been replaced 2-3 times.

Your right in your assumption , the CS has got a different tune for exhaust.

Mine is cracked too. It still sounds great though, so it is not an issue for me. The warranty on my 2015 M4 expires in July this summer, I'll get my MPE replaced just before so I have brand new unit to install on my CS

[mitch32]

What are the real differences between competition and CS.... we know from a mechanical standpoint the base vs competition is suspension (and then some small electronic tuning, and in 2016 the crankcase was different but same after).

[drgmt]

The MPE has a two year warranty. That's pretty poor for a product that cost that much.

215 K for a CS model in Australia ? For a tuned competition pack with no hand rest, door levers and a few carbon bits? It's a great car but not for that money.

I'd rather get myself an AMG GTS for that and drive away in the real deal.

[melvyn]

Quite a few supple changes over the CP.

The CS3 interested me because it's supposed to of shed 110 pounds off the standard weight of the standard M3 and about 70 pound off the CP.Dct has been remapped , includes program to counter understeer.
Biggest one for me is the mid range power increase, torque has been increased to 600nm and same as the GTS.
Hp gain mid range is nuts 🥜

[CanAutM3]

Originally Posted by Modaddict79

The MPE has a two year warranty. That's pretty poor for a product that cost that much.

215 K for a CS model in Australia ? For a tuned competition pack with no hand rest, door levers and a few carbon bits? It's a great car but not for that money.

I'd rather get myself an AMG GTS for that and drive away in the real deal.

Here in Canada, the MPE warranty is the longest between 2 years and the remaining vehicle warranty, as is the case with any genuine BMW part. Since I installed the MPE when my car was almost new, I get 4 years of full warranty.

[CanAutM3]

Originally Posted by melvyn

Quite a few supple changes over the CP.

The CS3 interested me because it's supposed to of shed 110 pounds off the standard weight of the standard M3 and about 70 pound off the CP.Dct has been remapped , includes program to counter understeer.
Biggest one for me is the mid range power increase, torque has been increased to 600nm and same as the GTS.
Hp gain mid range is nuts ��

Those weight reduction numbers a total marketing

Please explain to me how the M3CS can shed more weight off the base M3 compared to the M4CS when the M3CS has less weight reduction features than the M4CS does?

In the interview with the BMW AG M3/4 product manager, he admitted that the M3 CS weighs about the same as a base M3, which makes more sense.

And BTW, a CP M3 weighs more than a base M3, mostly because of those stupid heavy 666M wheels.

[mechanic75]

He said it was 30kg lighter than a standard car and 5kg lighter than the M4Cs. If you watch it though he seems a bit vague or like he knows he’s spinning some spiel..

Wheels, bonnet and HVAC surely can’t add up to 30kg...

[CanAutM3]

Originally Posted by mechanic75

He said it was 30kg lighter than a standard car and 5kg lighter than the M4Cs. If you watch it though he seems a bit vague or like he knows he’s spinning some spiel..

I did not understand that.

Further, how can the M3CS be lighter than the M4CS when the base M3 is heavier than the base M4 ?

Originally Posted by mechanic75

Wheels, bonnet and HVAC surely can’t add up to 30kg...

The 763M wheels alone are worth ~8kg over the 666M.

[mechanic75]

Originally Posted by CanAutM3

I did not understand that.

Further, how can the M3CS be lighter than the M4CS when the base M3 is heavier than the base M4 ?

The 763M wheels alone are worth ~8kg over the 666M.

Sorry, I meant to say, M4cs is 5kg lighter than the M3Cs.

[mechanic75]

Interview. I know it’s been posted before. Watched it again, clearly states it’s 30-40kg lighter than the standard car.

Bonnet: 4kg
Wheels: 9kg
HVAC: ?

What else??

[CanAutM3]

Originally Posted by mechanic75

Sorry, I meant to say, M4cs is 5kg lighter than the M3Cs.

I just listen to the interview again and I did not hear anything to that effect, comparing the weights of the M3CS and M4CS.

Originally Posted by mechanic75

Interview. I know it’s been posted before. Watched it again, clearly states it’s 30-40kg lighter than the standard car.

Bonnet: 4kg
Wheels: 9kg
HVAC: ?

What else??

He does skate around a little though, when he mentions "the M3CS weighs more or less 30 to 40kg lighter than the base M3, but also here we put in a lot of standard equipment... ...and therefore we get a lot of weight into the car and in the end M3 and M3CS are more or less the same. But we saved for the CF parts and lightweight materials around 30 to 40kg"

What I interpret from this is that the weight saving they achieved is offset by the "standard" equipments they put back in.

[mechanic75]

Originally Posted by CanAutM3

I just listen to the interview again and I did not hear anything to that effect, comparing the weights of the M3CS and M4CS.

He does skate around a little though, when he mentions "the M3CS weighs more or less 30 to 40kg lighter than the base M3, but also here we put in a lot of standard equipment... ...and therefore we get a lot of weight into the car and in the end M3 and M3CS are more or less the same. But we saved for the CF parts and lightweight materials around 30 to 40kg"

What I interpret from this is that the weight saving they achieved is offset by the "standard" equipments they put back in.

Yes agreed but I would have to question what he is saving 30kg against? I would interpret that as a like for like comparison to a base car.

[CanAutM3]

Originally Posted by mechanic75

Yes agreed but I would have to question what he is saving 30kg against? I would interpret that as a like for like comparison to a base car.

I assume they also include the weight they save by using CF on the front lip, rear spoiler and diffuser.

However, as a point of reference, looking at AM&S data, the last 3 M4CP they tested were weighed at 1644kg, 1638kg and 1637kg compared to the 1609kg of the M4CS they tested. So the M4CS does seem to be slightly lighter than the CP M4, albeit the M4CS had the manual seats.

As for the single zone HVAC, I am sure it saves a fair bit of weight in ducting, dampers and heat exchangers relative to a dual zone system. The M4CS only gets a base sound system and not the M3CS' full HK and has the lightweight door cards and door pulls that the M3CS doe not have.

[nicknaz]

If that trap is repeatable by customers that's pretty impressive.

Isn't ~125mph the trap of a jb4 car on drag radials? Pretty nice that a mild tune and cup2 tires get 123mph traps.