[TG]

Who's the best engine tuner: Dinan, AC Schnitzer (who both claim not to void the factory warranty), or JB4, Hex, Bosch, Evolve Technik, or any others. Who's had a tune done and what dyno improvement did you get? How did it effect street and track driving? I'm looking for the optimum tune to add say 50/60hp at the wheels retaining originally street smooth drivability. Appreciate hearing your experience.

[MSULLY]

So I'm going to save you some backlash my friend, I'm a fairly new member myself and I know the crowd can get rough. I lurked this sight for a year before I had a deposit on my M2. In the beginning most new to the form spent that time tracking there build and waiting patiently/bitching about delays, slowly new mods and development started to unfold. Take sometime to do research on here and all the questions you have will be answered. There is very short temperamental members and some that are down right caring & awesome people. Search then question, If I can I'll help, but I'm no expert.

My long answer to your initial inquiry is 50/60 WHP is just not feasible with a engine tuner/ECU Mod alone. You will need several other supporting mods to accomplish that and a Pro-Tune. Off the top of my head parts and tune will cost over to 2K without labor, and I think I'm being conservative. Your talking over 410WHP & 460WTQ without crazy mixtures of alternative fuels. While some might argue that obtaining those numbers is not so far fetched I will disagree. I personally believe it will cost some $ to do it right & reliable. Enjoy your new car!

[TG]

Thanks MSULLY. In Melbourne we have 98 octane fuel readily available so that may help. AC Schnitzer, for one, advertise 420 hp (compared with 365 stock at the flywheel) from their ECU tune. And yes, $2,000 plus is what I would expect to pay for a proper job.

[Dav3]

Originally Posted by TG

Who's the best engine tuner: Dinan, AC Schnitzer (who both claim not to void the factory warranty), or JB4, Hex, Bosch, Evolve Technik, or any others. Who's had a tune done and what dyno improvement did you get? How did it effect street and track driving? I'm looking for the optimum tune to add say 50/60hp at the wheels retaining originally street smooth drivability. Appreciate hearing your experience.

Eh, thing is the M2's N55 performance is pretty maxed out already

Turbo upgrade and other bolt-ons are realistically the only real mods you can do that will deliver noticeable power increase

General consensus is a flash tune > full piggyback > two sensor piggyback

And on a sidenote, ACS & Dinan both give crank numbers on their dyno's... 2-3k is a lot of money for marginal gains imo

[CommitConfirm]

BMW

[Ex-MINI]

Originally Posted by TG

Thanks MSULLY. In Melbourne we have 98 octane fuel readily available so that may help. AC Schnitzer, for one, advertise 420 hp (compared with 365 stock at the flywheel) from their ECU tune. And yes, $2,000 plus is what I would expect to pay for a proper job.

In Australia, the octane standard is RON, correct? If so, then 98 RON I think equates to 93 AKI....which is a pretty standard fuel in NA.

[Gimmethecash]

Originally Posted by Ex-MINI

In Australia, the octane standard is RON, correct? If so, then 98 RON I think equates to 93 AKI....which is a pretty standard fuel in NA.

...unless you live somewhere like the Golden State, where you'll need to get creative if you want more than 91 AKI. Fortunately there are some 76 stations around that sell unleaded 100 octane race gas that can be mixed with 91.

[ashburyn54]

Originally Posted by TG

Who's the best engine tuner: Dinan, AC Schnitzer (who both claim not to void the factory warranty), or JB4, Hex, Bosch, Evolve Technik, or any others. Who's had a tune done and what dyno improvement did you get? How did it effect street and track driving? I'm looking for the optimum tune to add say 50/60hp at the wheels retaining originally street smooth drivability. Appreciate hearing your experience.

Testing getting the JB4 locked in. Bootmod 3 is the leader so far. The JB4 throttle closures may be a thing of the past now, very excited. Quick log today with new firmware and EWG wires. Running conservative boost.

[Ex-MINI]

Originally Posted by Gimmethecash

...unless you live somewhere like the Golden State, where you'll need to get creative if you want more than 91 AKI. Fortunately there are some 76 stations around that sell unleaded 100 octane race gas that can be mixed with 91.

Really? I'm surprised since CA has such as strong car culture....just assumed that would be one place that would be easy to get decent gas

[Gimmethecash]

Plenty of theories out there as to why; I don't know which of them are correct.

I do feel lucky that the car wash where I take my car has unleaded 100 octane race gas, as does a nearby 76 station.

[VF-Engineering]

Originally Posted by TG

Thanks MSULLY. In Melbourne we have 98 octane fuel readily available so that may help.

Are you familiar with Euro Motorsport in Clayton?

They have a phenomenal facility, with a dyno, and just recently completed
the first HEX Tuned BMW M2 in Melbourne!

We set them up with our Stage ONE software pre-release, and that
same customer will be going back for Stage TWO as soon as we
finalize the official FULL release (worldwide) later this week.

50/60 crank horsepower is not out of the real of possibility for a Stage TWO
car with the right combination of bolt ons...

[mike@x-ph.com]

I will start by saying no company claim that their tune will not void warranty. Some will offer you their own warranty, if BMW refuses to fix the car for free.

There is no best tune. It depends on what you are looking for, your mods and fuel

[harkes]

The 335i is a normal N55 the M135/235i and M2 is just software tuned versions of this engine. As said in the first post all your answers are in here and you are not limited to the information on the M2 forum
I think around 400whp (~15psi) is possible if the HPFP agrees.

[3Si]

Originally Posted by harkes

The 335i is a normal N55 the M135/235i and M2 is just software tuned versions of this engine. As said in the first post all your answers are in here and you are not limited to the information on the M2 forum
I think around 400whp (~15psi) is possible if the HPFP agrees.

The M2 N55 is not only a software tune.

[PrematureApex]

Originally Posted by 3Si

The M2 N55 is not only a software tune.

From a power potential perspective it is. But sure, it's been strengthened in some areas as well.

[wakeofdeath]

Originally Posted by ashburyn54

Testing getting the JB4 locked in. Bootmod 3 is the leader so far. The JB4 throttle closures may be a thing of the past now, very excited. Quick log today with new firmware and EWG wires. Running conservative boost.

Looks like stock boost to me and HPFP still hitting 10 pretty frequent no?

Originally Posted by VF-Engineering

50/60 crank horsepower is not out of the real of possibility for a Stage TWO
car with the right combination of bolt ons...

Why advertise at crank? Didn't know we had another Dinan

Originally Posted by harkes

The 335i is a normal N55 the M135/235i and M2 is just software tuned versions of this engine. As said in the first post all your answers are in here and you are not limited to the information on the M2 forum
I think around 400whp (~15psi) is possible if the HPFP agrees.

Typical jb4 user answer

Originally Posted by 3Si

The M2 N55 is not only a software tune.

+1

[VF-Engineering]

Originally Posted by wakeofdeath

Why advertise at crank? Didn't know we had another Dinan

Our dyno is showing power gains at the wheels, sir!
(we strictly advertise wheel gains, not crank)
I only referenced "50/60 crank" because that's what he asked about.

DynoJet.
Uncorrected.
Smoothing 5.
Dyno'd on the same day, same fuel, same session.

The official HEX Tuning release of Stage ONE and Stage TWO for the
BMW ///M2 will be coming on Monday.

[TG]

Thanks VF-Engineering. I have met Nik from Euro Motorsport, so will watch for your release next week and have a chat with Nik.

[wakeofdeath]

Originally Posted by VF-Engineering

Our dyno is showing power gains at the wheels, sir!
(we strictly advertise wheel gains, not crank)
I only referenced "50/60 crank" because that's what he asked about.

DynoJet.
Uncorrected.
Smoothing 5.
Dyno'd on the same day, same fuel, same session.

The official HEX Tuning release of Stage ONE and Stage TWO for the
BMW ///M2 will be coming on Monday.

Looking forward to your results
Also are you guys to let us know how much boost stage one & stage two are running?

[ashburyn54]

Originally Posted by wakeofdeath

Looks like stock boost to me and HPFP still hitting 10 pretty frequent no?

Why advertise at crank? Didn't know we had another Dinan

Typical jb4 user answer

+1

No the HPFP is almost pegged at 14-18 most of the time. That's a stock boost run. The map 1 run is the same. Greatly improved

[ashburyn54]

Originally Posted by ashburyn54

No the HPFP is almost pegged at 14-18 most of the time. That's a stock boost run. The map 1 run is the same. Greatly improved

You can see here. This is with almost zero adaptation in very cold weather so the targets are lower ECU psi wise. HPFP is the top red line. It's like a different tune now lol

[wakeofdeath]

Originally Posted by ashburyn54

You can see here. This is with almost zero adaptation in very cold weather so the targets are lower ECU psi wise. HPFP is the top red line. It's like a different tune now lol

What are your settings like?