[Jadar]

Originally Posted by parrnan

An ECU tune that will void your car warranty for a little 19 WHP gain is not a good idea compared to a simple Fabspeed sport cat (200 cell) dowpipe that will give a 21WHP gain without impacting the car warranty. I guess that for a reliable small HP gain the Fabspeed sport cat downpipe is the way to go. But if you don't care about the car warranty I guess that you can do both for a bigger HP gain.

But removing an emission component that "remember that little yellow" slip we all sign when buying a car promising not to alter EPA components or face consequences for 4 more hp is worth it?

Not only that while risking an EPA fine.

Just sayin you're completely posting a double edged sword scenario. Sure you can swap back down pipes but there's always evidence and marks from it going in and out. Sure the ecu flash guys can actually go back to stock file map, quite easier then a down pipe swap may I add.

You think the dealer will treat you any different by patting you on the back because you chose a down pipe over a flash? Same scenario, in fact they're more likely to blame a turbo failure especially waste-gate failure in your down pipe.

Just sayin. I've seen all the scenarios. Some dealers care some don't. Some call EPA some don't depending on what state you're in.

It's all a risk my man...

[Jadar]

Originally Posted by kdog26372

About the best you could expect. It's the same engine/turbo with some beefed up parts as an M235i. It's close to maxed out from the factory in the M2. You'll need to run a higher octane map, add a downpipe and/or upgrade the turbo to show bigger gains.

The M2 in stock form is about perfectly balanced with it's suspension, brakes, tires and amount of power. Adding much more power is kinda pointless for the purpose of this car. It already laps most tracks about equal to the more powerful M3. Everyone can choose to do what they want with their car, but if I bought on M2 instead of my M235i I would leave it be in stock form particularly from a power standpoint.

Yes sir best assessment in this thread. Finally someone not bitching and moaning and graining how shitty and weak a tune is for an M2 but someone that gets it

[Jadar]

Originally Posted by kiysersosae

Not all power increase is gained solely from the turbo, it's just this is the simplest way to gain bhp when spare capacity exists. Yes, the turbo is maxed out but let's look at timing and fuel injection optimization, this is another area where increase can be had.

Ac schnitzer module id said to release 420bhp, I'm not saying evolve or anyone else couldn't achieve the same with a bit more time, but AC have, and I m sure they wouldn't lie to the tune of 20-25bhp more when compared against the evolve stage 1.

Furthermore, evolve in my eyes are one of the most honest, knowledgeable and reliable tuners around.

420bhp is pretty much on par with everything I've seen from every flash piggy tuner on an M2 to this point which is right around 375-380 "rear wheel horse power"

I love when People come in from a tuner and quote crank or bhp...some folks have been reading too much Dinan magazines lol

[Jadar]

Originally Posted by M3 Adjuster

Four times limp mode at high speeds - Turbo pressure too high warning http://f87.bimmerpost.com/forums/sho....php?t=1317706


Drivetrain Malfunction - Limp Mode http://f87.bimmerpost.com/forums/sho....php?t=1312652

I'm guessing your only mod is the downpipes and you're not utilizing some sort of tuning device?

You really have to pair the two for it to work optimally. What you're seeing is overboost and the car is freaking out and shutting down because the dme is seeing higher then OEM boost t map readings.

This is why a piggy back flash alters those parameters so you don't have those issues.

The only other thing I can think of only because I've seen it is the DP was installed incorrectly and you're having a serious exhaust/boost leak right at the v band flange. You're dumping exhaust through that leak and the waste gate is trying to dump extra in itself and your car is freaking out. Saw it once on a car. Reinstalled the downpipes and no issues.

[Twix]

I've had my catless DP on for just over 1000km. No tune and no issues with drivability. The A74 cat sim isn't working, but I expected that.

[MightyMouseTech]

Originally Posted by Powaup

N55 M2 owners would lose their minds

Well, the 240 is making nearly the same numbers. Would not be surprised if tuned versions start to make significantly more.

[Vtec Abuser]

Any Vbox number yet guys? That'll tell the true story..

[wakeofdeath]

Originally Posted by g force

I have active intercooler
Careless downpipe
And auto couture tune and never had one problem
I have way more power

Where's your dyno ?

[LeonTheJeweler]

Next week after in do intake

[dizx]

Originally Posted by brad850csi

That's what they claim but from what I've seen of various M2 dynos there aren't many gains to be had and I think you'll find that if one of those brand's cars were to be dynoed at the same time on the same dyno as an evolve car, or did a 60-130 run they would have a very similar result.

Why would BR Performance, as one of the most serious tuners in the biz, falsify their numbers?


From their own website:
We have a state-of-the-art 4x4 rolling road from DYNOSTAR, which can measure 1341hp with a stunning accuracy of 1%! Because some high-performance engines only deliver their maximum power at high-speed - f.e. BMW V8 M3 - Because of the ram-air effect, we have installed a Rucon System with two fans of 22kW each (total 60hp) that can deliver up to 80,000 m³ / h @ 200 km / h!

[brad850csi]

Originally Posted by dizx

Why would BR Performance, as one of the most serious tuners in the biz, falsify their numbers?


From their own website:
We have a state-of-the-art 4x4 rolling road from DYNOSTAR, which can measure 1341hp with a stunning accuracy of 1%! Because some high-performance engines only deliver their maximum power at high-speed - f.e. BMW V8 M3 - Because of the ram-air effect, we have installed a Rucon System with two fans of 22kW each (total 60hp) that can deliver up to 80,000 m³ / h @ 200 km / h!

BR measure the M2 at exactly 370hp and 465nm according to their site which is exactly the BMW specs, then rate their power output as gains based on that, without actually providing a dyno on their website.

I haven't looked around to see if a 3rd party has uploaded one, but I'd like to see a before and after graph of BR's tune with the same correction factor and atmospheric conditions.

I think you'll see their difference before and after is very similar and there isn't much additional flow that can be had from the N55 stock turbo.


I don't think any tuners have 'magic sauce', ie I'm not saying that BR is rubbish, I just don't think they know how to get a 45hp gain out of the car and Evolve can only manage 20hp. That implies a massive level of difference in expertise, or possibly the willingness to run values a bit closer to extremes.

Evolve have definitely been around for a while and have a reputation for making a great reliable tune without having problems. All tunes from all reputable companies should produce similar 60-130 times and I know that Evolve also show those (or similar equivalents) and both before and after 'real' dyno graphs.

[FSociety]

Looking forward to the vbox numbers before and after

[dbperformance]

@Brad, I can promise you that BR knows how the game works. They were the first one to crack the ecu of the F models. They have already tuned 2 M2's and ended up with at least +50hp..

I will upload tomorrow the dyno of a M2 which is tuned by BR Performance.

[RPM2-85]

I think there is a secret sauce, and some tuners have figured it out. Clearly the Euro guys have.

TTFS seems to have done it stateside.

[wakeofdeath]

Originally Posted by FSociety

Looking forward to the vbox numbers before and after

+1

Originally Posted by dannyvdberg

@Brad, I can promise you that BR knows how the game works. They were the first one to crack the ecu of the F models. They have already tuned 2 M2's and ended up with at least +50hp..

I will upload tomorrow the dyno of a M2 which is tuned by BR Performance.

Definitely!
Pls share the Dyno

Originally Posted by RPM2-85

I think there is a secret sauce, and some tuners have figured it out. Clearly the Euro guys have.

TTFS seems to have done it stateside.

TTFS has had M2 longer than anyone else and we still havent seen any REAL results yet. :yawn:

[Imran@Evolve]

Originally Posted by Vtec Abuser

Any Vbox number yet guys? That'll tell the true story..

Been away at SEMA last week or so. Will try and get some numbers this week when the weather permits.

[Vtec Abuser]

Originally Posted by Imran@Evolve

Been away at SEMA last week or so. Will try and get some numbers this week when the weather permits.

Come on guys... Tick tock

[Bimmer28312]

Weather must be so horrible the last few weeks..

[Imran@Evolve]

Since I've been back in the country i.e. the last week the UK weather well has been the UK weather for this time of year. There is a reason why so many people in this country are grumpy most of the time.

And now the car is prepping for the Essen show and has no glass or roof. If conditions are good next Tuesday before the car goes to Germany that will be the only window.

[kiysersosae]

Originally Posted by Imran@Evolve

Since I've been back in the country i.e. the last week the UK weather well has been the UK weather for this time of year. There is a reason why so many people in this country are grumpy most of the time.

And now the car is prepping for the Essen show and has no glass or roof. If conditions are good next Tuesday before the car goes to Germany that will be the only window.

I can vouch for the weather, its torturous at at he minute, soaking wet and Skippy as hell, no way you could get any consistency in these conditions.

[Imran@Evolve]

Originally Posted by kiysersosae

I can vouch for the weather, its torturous at at he minute, soaking wet and Skippy as hell, no way you could get any consistency in these conditions.

Thanks for that. Thought I'd have to prove how unsuitable its been with weather charts and all.

[David1]

Can you guys remove the speed limiter?