[bradleyland]

Originally Posted by 1azycat

Do you have to remove the ECU for this flash or can it be done by OBD?

This language from the OP makes it sound like it's OBD:

Originally Posted by TTFS

...The M2 like the M4 and M5 platform is very much tuneable especially when the computer is not being tricked with piggyback that hits torque limiter or require a back end flash that requires an ecu to be taken out of the car just like ecu tuning...

[e92_boost]

Can't wait till the modding begins on this bad boy

What were the numbers like on a tune only?

[StealYourFace]

Wow, 388/393 with hp peaking 400 rpm before redline is so exactly perfect.

[mookie45]

Very nice work. Just to clarify, is this a OBD flash tune and is this with stock dp?

[TTFS]

Originally Posted by 1azycat

Do you have to remove the ECU for this flash or can it be done by OBD?

Originally Posted by PrematureApex

Pretty certain it's a removal/bench flash.

You will need to remove the ecu out for the initial run for sure just like a back end flash. We are looking into OBD flash for all flashes after. For example we can OBD flash f10 M5 after initial flash.

Originally Posted by StealYourFace

Wow, 388/393 with hp peaking 400 rpm before redline is so exactly perfect.

:beer:

Originally Posted by mookie45

Very nice work. Just to clarify, is this a OBD flash tune and is this with stock dp?

This is with an aftermarket down pipe with a bench flash at 17 psi.

[OrangeCrush]

Originally Posted by TTFS

You will need to remove the ecu out for the initial run for sure just like a back end flash. We are looking into OBD flash for all flashes after. For example we can OBD flash f10 M5 after initial flash.




:beer:



This is with an aftermarket down pipe with a bench flash at 17 psi.

Pretty cool! Now how does a guy like me in Indiana get this tune?

[bluekn8286]

My biggest question is how motor longevity is affected by a boost pressure increase to 20psi? I would think that the internals would need to be modified at some point in order to ensure reliability over a long period of time.

[Bee Pee]

Blue,

Given that M2 chargepipe is same as M235i, this will fail at ~20psi well before you wreck your engines guts !!!

BP

[ashburyn54]

Originally Posted by bluekn8286

My biggest question is how motor longevity is affected by a boost pressure increase to 20psi? I would think that the internals would need to be modified at some point in order to ensure reliability over a long period of time.

It will be fine. Proper fuel is the ticket for me. ACF believes the longevity limit is around 650whp for the stock open deck f series. Nobody truly knows yet. This iteration on paper is stronger than the normal n55 and n54. I'm going to stay away from meth. A larger turbo running close to stock boost levels will be safer as well.

[bradleyland]

Originally Posted by bluekn8286

My biggest question is how motor longevity is affected by a boost pressure increase to 20psi? I would think that the internals would need to be modified at some point in order to ensure reliability over a long period of time.

20 psi isn't terribly high. We know that some of the engine parts are from the S55, so to the extent that the internals have been upgraded, they should be fine. The bigger concern is pushing the turbocharger to these levels. Turbochargers have a pretty narrow range of efficiency. When you push them beyond that, they run much higher temperatures.

There's still a lot we don't know about the turbocharger, and there are a lot of open questions, so until a tuner tears one down and takes measurements, we won't have a good idea of the turbocharger mechanicals. We can infer from the limits though. If tuners are topping the turbo out (in terms of boost), that means it's at its limit. That's not good for longevity.

Honestly, if you really care about longevity, just drive the car stock. The M2 is plenty fast. The real benefit is in the handling, which sounds superb.

[BruceM]

Originally Posted by bradleyland

20 psi isn't terribly high. We know that some of the engine parts are from the S55, so to the extent that the internals have been upgraded, they should be fine. The bigger concern is pushing the turbocharger to these levels. Turbochargers have a pretty narrow range of efficiency. When you push them beyond that, they run much higher temperatures.

There's still a lot we don't know about the turbocharger, and there are a lot of open questions, so until a tuner tears one down and takes measurements, we won't have a good idea of the turbocharger mechanicals. We can infer from the limits though. If tuners are topping the turbo out (in terms of boost), that means it's at its limit. That's not good for longevity.

Honestly, if you really care about longevity, just drive the car stock. The M2 is plenty fast. The real benefit is in the handling, which sounds superb.

Or switch out the turbo. There have been very successful combos of aftermarket turbos with the N55, including all fueling requirements...

[paradoxical3]

Not sure if this helps anyone, but was able to get a calipers on the wastegate. Was 42mm. Couldn't fit it on the wheel though.

[TTFS]

Based on current research we will not be pushing the turbo more than 20 psi because of the turbo not motor internals.

[bradleyland]

Originally Posted by BruceM

Or switch out the turbo. There have been very successful combos of aftermarket turbos with the N55, including all fueling requirements...

Yeah, a turbo swap is always an option, but you're looking at a pretty big leap in commitment from a price perspective. A tune is a few hundred dollars, while a turbo is thousands. I do agree that the N55 + turbo swap has been a fantastic platform though, so on that insight.

[PrematureApex]

Originally Posted by bradleyland

Yeah, a turbo swap is always an option, but you're looking at a pretty big leap in commitment from a price perspective. A tune is a few hundred dollars, while a turbo is thousands. I do agree that the N55 + turbo swap has been a fantastic platform though, so on that insight.

A Pure stage 1 is $900.

[paradoxical3]

Originally Posted by PrematureApex

A Pure stage 1 is $900.

I am still planning on going stage 2, but honestly the more I drive it the more I appreciate the wonderful balance that the car has between sheer power and playfulness. I think even a flash tune for 390whp would be just perfect if it held power to redline; there is something to be said for the a nice match between power and the chassis.

The M2 is already significantly faster than most cars with equivalent horsepower due to the DCT and the way it puts power down. It feels quick. I think a Pure Stage 1 will prove to be a very popular option for this platform.

The really nice thing about this flash tune dyno chart I like is that power doesn't fall off even near 7krpm.

[ashburyn54]

Originally Posted by paradoxical3

I am still planning on going stage 2, but honestly the more I drive it the more I appreciate the wonderful balance that the car has between sheer power and playfulness. I think even a flash tune for 390whp would be just perfect if it held power to redline; there is something to be said for the a nice match between power and the chassis.

The M2 is already significantly faster than most cars with equivalent horsepower due to the DCT and the way it puts power down. It feels quick. I think a Pure Stage 1 will prove to be a very popular option for this platform.

The really nice thing about this flash tune dyno chart I like is that power doesn't fall off even near 7krpm.

Man I feel the same way. I went from a FBO n54 stock frame turbo car on e85 to removing jb4 because of a couple problems. It was much better to drive. I really want a solid flash tune for this thing. I'll try to hold off on pure for at least a month or two haha

[bradleyland]

Originally Posted by PrematureApex

A Pure stage 1 is $900.

WUT!? Damn, that is an amazing price point.

[zenmaster]

Originally Posted by bradleyland

WUT!? Damn, that is an amazing price point.

Looks like they want $1900 if you want to keep your stock turbo.

[d0scas]

@TTFS any updates from the wanna go fast event ?

[TTFS]

Originally Posted by d0scas

@TTFS any updates from the wanna go fast event ?

It was raining and foggy that entire weekend. Unfortunately we did not participate.

[TTFS]

Here is our most recent dyno done last night with 21 Psi on 93 pump gas with downpipe and ECU tuning. We plan on upgrading the intercooler and perhaps turbo later. The first run were done back to back starting with green, light blue, and last run was orange.