[vinlikesred]

sorry about noob question, but how can you tell whether you got v80.0 DME or v81.0?

i did search and only dealer can tell whether you got 29.2 or not. but couldn't find any info on how to tell what DME...

mine is mar 08 build so it could be either one.

thinking about dinan seriously cuz of damn turbo lag. it's definately there...

[ybbiz34]

Originally Posted by Tuned335i

It's good to be skeptical, especially about anything on the internet.

IMO it's because they realized that (1) the pre-29.2/MSD81 cars were too close in performance to the new M3 which makes it nearly impossible to justify the cost difference for most people who would have otherwise jumped on the M3, and (2) they're hoping that the revised wastegate duty cycle timing accompanied by the changes in 29.2/MSD81 will reduce warranty and/or turbo/wastegate failures that are being experienced due to a poor design which has durability issues even at stock boost levels. Othewise, why would they implement something so drastic to curb the tuning of the N54 which is a tiny fraction of the cars produced.

I find it hard to believe that so many enthusiasts, sensitive to every change in their cars, are all completely wrong about there being such a change in driveability (lag) after being updated with Progman 29.2.

Regarding your last paragraph there, I agree. That's why I am so confused. Surely enthusiasts would be able to tell if there is a lag or not. But with all of the doom and gloom talk of the program, I wouldn't be surprised if people let their minds get the best of them. I know that several of us on this site with the 6AT got a placebo Dinan flash when we initially went in for the "revision." We drove around with stock boost (~8 psi instead of Dinan's ~13) for a couple of days and thought it felt great.

[tyler9595]

Originally Posted by ybbiz34

For those of you reporting "lag" with the stock setup and 29.2, do you ever drive the car in "DS" (if you have the Steptronic)? From what I remember, stock response in "DS" mode always seemed very snappy, almost to the point where it was jerky. Is "DS" laggy now as well with 29.2?

DS is laggy as hell. I almost never drive my car in "D". Also, the car feels like it makes zero boost below about 2800rpm.

FWIW there's quite a bit less lag at 4000 rpm.

[Joeyballs]

I pick my car up Wednesday. I really hope Im not left disappointed.

[ybbiz34]

Originally Posted by tyler9595

DS is laggy as hell. I almost never drive my car in "D". Also, the car feels like it makes zero boost below about 2800rpm.

FWIW there's quite a bit less lag at 4000 rpm.

That's a real bummer man. You have a PM.

[Lotus99]

Originally Posted by Tuned335i

IMO it's because they realized that (1) the pre-29.2/MSD81 cars were too close in performance to the new M3 which makes it nearly impossible to justify the cost difference for most people who would have otherwise jumped on the M3,

I seriously doubt that. If that was true, and therefore they've intentionally now detuned them, then wouldn't they have to revise their marketing materials and 0-100 km/h time claims?

[Malek@MRF]

I have a MSD81 DME and I do not have this lag people talk about.

Drives just like any other pre 29.2 MSD80 car.

[vinlikesred]

Originally Posted by Malekreza11

I have a MSD81 DME and I do not have this lag people talk about.

Drives just like any other pre 29.2 MSD80 car.

how can you tell you have msd81? did the dealer tell you? or is there a sticker somewhere in the car that says it's so?

[oc24]

Originally Posted by vinlikesred

how can you tell you have msd81? did the dealer tell you? or is there a sticker somewhere in the car that says it's so?

Open up your ECU box and there will be a sticker that identifies it as such.

[vinlikesred]

Originally Posted by slubu

Open up your ECU box and there will be a sticker that identifies it as such.

thanks!

[Tuned335i]

Originally Posted by slubu

Open up your ECU box and there will be a sticker that identifies it as such.

On the top side of the ECU itself. You have to release the white clips that hold it down in the ECU enclosure, then lift it up.

[meyergru]

Originally Posted by vinlikesred

sorry about noob question, but how can you tell whether you got v80.0 DME or v81.0?

Post your VIN and I'll tell you.

[Malek@MRF]

Originally Posted by vinlikesred

how can you tell you have msd81? did the dealer tell you? or is there a sticker somewhere in the car that says it's so?

The ECU was physically removed from my car to implement my upcoming tune.

Been running for 1200 miles now at 11.3 PSI, NO codes, NO limps and its been 96*F here lately with 91 octane. On the street, it is so far faster than an MSD80 PRE 29.2 car with another "tune".

[dinnu]

I took the delivery of my car yesterday, black sapphire metallic 335i sedan with auto transmission. I think it does have the new DME81 (the car was delivered to the dealer on Saturday).

This is my first turbo car and don't really know much about the "lag" you guys are talking about. But when I push the gas at about 2K rpm in "D", the car takes about a second (or maybe less) to launch. It's almost like any other V6 car taking time to downshift when you push on the gas hard. If this is what you guys mean by "lag", then I definitely have it .

[meyergru]

Originally Posted by dinnu

This is my first turbo car and don't really know much about the "lag" you guys are talking about. But when I push the gas at about 2K rpm in "D", the car takes about a second (or maybe less) to launch. It's almost like any other V6 car taking time to downshift when you push on the gas hard. If this is what you guys mean by "lag", then I definitely have it .

335i should not expose any old-school turbo lag because of the two small turbos plus the steptronic shifts in a mere 100ms. So, if your car takes a second to launch, it has a new software version that makes it feel that way.

You probably wouldn't even notice unless you have driven the car with an older software version. It becomes very apparent when you are used to instantaneous reaction.

A good test is to go 30 mph in manual mode in 3rd gear (< 2000 rpm) and step on it (without kickdown). With v29.2 or v30, the car accelerates a bit and after a short second, you notice a second push from the turbos that kick in.

[Boost Gomez]

Originally Posted by Lotus99

I seriously doubt that. If that was true, and therefore they've intentionally now detuned them, then wouldn't they have to revise their marketing materials and 0-100 km/h time claims?

Well, their claimed 0-100 km/h times have been conservative from the start (0-100 km/h in 5.5 seconds)..

[TheJerseyDon]

v81 does have lag as i came from 07 to my 08 and it was night and day both stock. someone hurry and hack this DME!

[CEW]

Originally Posted by AJerman

Yes, there is a lot of lag. Then again, I'm coming from a supercharged car that hit nearly 500 ft lbs of torque the second you hit the gas, so I'm not used to any lag, but still, the turbo lag seems a bit excessive to me.

Throttle response is pretty poor too. The pedal is dead for what feels like at least an inch.

I have an April 08 build as well. I also experience some turbo lag (not horrible, but noticable). I also find the pedal is a little dead initially.

I hope that the next Dinan Stage 2 release resolves this, once it comes out for the MSD v81.0 DME.