[Lifted07Duramax]

So I read over the pdf file detailing the M4 engine and specs. I may have missed some of this info but a few questions.

How can the M4 dyno over 500rwhp without needing fueling upgrades like a N54 does?

Are the turbos the same size as the ones on the N54 or are they bigger? Or maybe upgraded internally like what RB or Vargas would do to them. Meaning no need to upgrade this turbos unless going bigger.

What upgrades were done to the tranny? Can it hold over 550rwhp no problem unlike some N54 guys wanting to upgrade their autos. Yes I understand there are N54s making big power with no issues but some have had issues.

And for now lastly, what do you guys think the M4 can hit dyno wise without meth and adding bigger turbos. So FBO with E85. I know it's early in the tuning stages so maybe 575rwhp?

[dx1541]

The new M3/M4 runs a new redesigned hpfp system where it feeds on a pair of Siamese hpfp unit feeding the fuel rails. A discussion was up earlier somewhere on another forum earlier. BMW obviously redesigned the fuel system from ground up knowing the power potential of the new power plant.

To be able to run so much more power as Terry from burgertuning has demonstrated just recently, it was observed that the new IhI turbos are at least as big as RB's or even more.

With the car being so new in the market, much has yet to be seen when tuners esentially develop new hardwares as well as tuning tools to extract max out of the S55 engine.

As for the tranny itself, time will tell of its power potential, after all what we're getting out of the N54 trannies is already a big plus considering some guys are lrewdy pushing at the 700 whp mark.

[Eat.Sleep.Race]

Im sure the M4 has many upgrades over a N54, that trans will probably hold close to 700-750 stock id imagine and it is going to make that with just bolt ons and some e85 tuning.

[Tony@vargasturbotech]

Originally Posted by dx1541

The new M3/M4 runs a new redesigned hpfp system where it feeds on a pair of Siamese hpfp unit feeding the fuel rails. A discussion was up earlier somewhere on another forum earlier. BMW obviously redesigned the fuel system from ground up knowing the power potential of the new power plant.

To be able to run so much more power as Terry from burgertuning has demonstrated just recently, it was observed that the new IhI turbos are at least as big as RB's or even more.

With the car being so new in the market, much has yet to be seen when tuners esentially develop new hardwares as well as tuning tools to extract max out of the S55 engine.

As for the tranny itself, time will tell of its power potential, after all what we're getting out of the N54 trannies is already a big plus considering some guys are lrewdy pushing at the 700 whp mark.

Everything we have seen points to MHI's or Garretts on the new M cars. We have upgraded the brand new IHI turbos off the 2015 VW GTI and Golf R, and they use a very distinct wheel profile etc. The new M3 turbos look nothing like them, we have a set on order we will know for sure when they arrive, but they do not look like IHI units.

[Lifted07Duramax]

Originally Posted by Vargasturbotech

Everything we have seen points to MHI's or Garretts on the new M cars. We have upgraded the brand new IHI turbos off the 2015 VW GTI and Golf R, and they use a very distinct wheel profile etc. The new M3 turbos look nothing like them, we have a set on order we will know for sure when they arrive, but they do not look like IHI units.

So you're thinking that they are top notch for their size? Do you think 600rwhp FBO is possible?

[Tony@vargasturbotech]

Originally Posted by Lifted07Duramax

So you're thinking that they are top notch for their size? Do you think 600rwhp FBO is possible?

The turbos are already showing sizes of being maxed out in Terrys tuning, FBO may pick up another 30WHP or so, but we highly doubt those will get you 600WHP.

[135Pats]

There is no way a stock turbo S55 is making 600 wheel unless you are doing something unsafe on the tuning side. A kill mode of kill modes. Doesn't detract from what appears to be a very capable, very modern motor.

[Tony@vargasturbotech]

Originally Posted by 135Pats

There is no way a stock turbo S55 is making 600 wheel unless you are doing something unsafe on the tuning side. A kill mode of kill modes. Doesn't detract from what appears to be a very capable, very modern motor.

I agree with this. Side note, I am actually pretty sure I can get 600WHP out of a stock frame N54 with the shotgun kit on it, the tune would be reasonably safe for the motor, but the turbos wont like it. I am going to pulling the set off the shop car to test some other stuff and I will try to break them and get as close to 600WHP before we do. We made 558 on 27 psi, throw 31-32 at it midrange, should get us pretty close...

[135Pats]

Originally Posted by Vargasturbotech

I agree with this. Side note, I am actually pretty sure I can get 600WHP out of a stock frame N54 with the shotgun kit on it, the tune would be reasonably safe for the motor, but the turbos wont like it. I am going to pulling the set off the shop car to test some other stuff and I will try to break them and get as close to 600WHP before we do. We made 558 on 27 psi, throw 31-32 at it midrange, should get us pretty close...

the turbos are what would be pissed, not so much the motor good point. Though i'd be curious to see EGTs at 32PSI with the type of advance i'd imagine you'd have to run. I'd think it would = mucho pressure in-cylinder.

I will say this, stock frame N54 snails are over-achievers. No guarantee how long they'll last but holy crap you can really spin em down low. We've been blessed with a very, very efficient motor.

[Tony@vargasturbotech]

Originally Posted by 135Pats

the turbos are what would be pissed, not so much the motor good point. Though i'd be curious to see EGTs at 32PSI with the type of advance i'd imagine you'd have to run. I'd think it would = mucho pressure in-cylinder.

I will say this, stock frame N54 snails are over-achievers. No guarantee how long they'll last but holy crap you can really spin em down low. We've been blessed with a very, very efficient motor.

EGT's wont be effected as they never peak in the midrange, and we cant hold anything much above 17-19 psi up top. We will see the typical numbers up top, BP, EGT, shaft speed, but by throwing that extra boost at it in the midrange you can really get the WHP up there before it tapers back down. I am assuming at 32psi WTQ will be somewhere over 650. Guess we will see if the Spec 3+ lives up to its rating.

[135Pats]

That must feel absolutely stupid fast on spool...Party runs out upstairs as noted, but must be silly to have 600WHP with stock turbo spool. Sick!

[Lifted07Duramax]

So why do you think it's possible with n54 but not S55. Excuse my ignorance lol

[135Pats]

Originally Posted by Lifted07Duramax

So why do you think it's possible with n54 but not S55. Excuse my ignorance lol

Think it's mostly a matter of how much headroom the stock turbos have in them, that's a relative unknown on the S55. We know that we can spin the daylights out of the stockers down low on the 54.

I don't doubt for a second the 55 can make 600 wheel from the standpoint of the motor. With all that said, the N54 is a pretty ridiculously efficient motor. Still remains to be seen just how much of an improvement the 55 is when we're talking BIG whp ie well over 600.

It'll certainly handle the fueling side of the equation better so that's awesome.

[Tony@vargasturbotech]

Originally Posted by Lifted07Duramax

So why do you think it's possible with n54 but not S55. Excuse my ignorance lol

Well because we have many sets of turbos and a fueling solution already on the N54 making 558WHP, we can push it to the point of breaking the turbos and not care. I doubt anyone is going to want to break S55 turbos or anything else on the car as the turbos are $3K each from the dealer right now, and the car is like a month old. I am not saying its not possible with the S55 if you do not mind breaking stuff, because technically its "not possible" with the N54 if you want things to live, we are just going to try to force it and most likely take out some turbos in the process in the name of fun and dyno numbers.

[Tony@vargasturbotech]

Originally Posted by 135Pats

That must feel absolutely stupid fast on spool...Party runs out upstairs as noted, but must be silly to have 600WHP with stock turbo spool. Sick!

Even as it sits now its stupid with the torque, its damn near instant. My new thing is making my girlfriends head hit the side window on left turns. Half way through the turn I just put it in boost, it snaps sideways, and boink, head hits window if she isn't paying attention. Its got to the point of her punching me after and yelling. I need to set up the phone and record it...

[Lifted07Duramax]

Reason I ask is cause if I step back into a BMW next year I want to be able to have more than I did with my 335 which was pretty insane. But why spend all that money on a M4 if I'm only getting 50 more hp
And yes all I care bout is the power. Handling doesn't mean too much to me since I won't track it

[Msport335]

558WHP on n54 stock turbo's? what kind of timing is run and accommodating mods?

[Tony@vargasturbotech]

Originally Posted by Msport335

558WHP on n54 stock turbo's? what kind of timing is run and accommodating mods?

Full write up on the other forum. Not going to go over everything again. There are a lot of details.

[Ingeniator]

Originally Posted by Lifted07Duramax

Reason I ask is cause if I step back into a BMW next year I want to be able to have more than I did with my 335 which was pretty insane. But why spend all that money on a M4 if I'm only getting 50 more hp
And yes all I care bout is the power. Handling doesn't mean too much to me since I won't track it

Buy a N54 car again for cheap and single turbo it then.

[Tony@vargasturbotech]

Originally Posted by Lifted07Duramax

Reason I ask is cause if I step back into a BMW next year I want to be able to have more than I did with my 335 which was pretty insane. But why spend all that money on a M4 if I'm only getting 50 more hp
And yes all I care bout is the power. Handling doesn't mean too much to me since I won't track it

Cars been out for a month, sounds like you should just wait and see what happens with the new cars

Originally Posted by Lifted07Duramax

Reason I ask is cause if I step back into a BMW next year I want to be able to have more than I did with my 335 which was pretty insane. But why spend all that money on a M4 if I'm only getting 50 more hp
And yes all I care bout is the power. Handling doesn't mean too much to me since I won't track it

If that's the case, go buy a Ford Fairmont and put a turbo LS1 in it. That whole platform would probably cost less than it would to make our cars FBO lol

[Lifted07Duramax]

Originally Posted by FCobra94

If that's the case, go buy a Ford Fairmont and put a turbo LS1 in it. That whole platform would probably cost less than it would to make our cars FBO lol

Well it has to look good too duh lol

Tea you're right Tony plenty of time To wait it out.

I sold my 335 and got a range rover evoque for snow out here. Love the vehicle but needs more power and so far no descent tuning. The new ones bump up to 280hp and get 200lbs lighter so I'll be looking into them too