Awron has upgraded fuel injectors for the F82 M4 & F80 M3 S55 - No port or methanol injection needed?

[Sticky]

The BMW M3 and M4 S55 motor is doing impressive things on the factory fuel system. The direct injection system is upgraded compared to N54 and N55 era BMW I6's. Getting bigger injectors for direct injection never seemed to be a problem on those older motors but getting pumps to drive fuel through them sure was (and is).

AWRON in Germany says they have upgraded high flow injectors for the S55 direct injection system. That is about all they say though. No details such as flow, pricing, or what kind of power levels these will support are provided.

Maybe the S55 motor will not have to lean as heavily on methanol and port injection in high power setups.

[BPCMotorsports]

this would be great news, Pending more details of course.

[alex@ABRhouston]

S55 injectors are hand selected......


so.... what I'm saying is, if you wanted better injectors for your N55, buy S55 injectors.
Interested to see what these are. If they work for S55, then they work for N55.

[Tony@VargasTurboTech]

LOL. Yes its the injectors, not the poor flowing HPFP's. You guys swap these in, and let us know how they do. Companies tried the same with the Ecoboosts. Big splashy news "UPGRADED DI INJECTORS" No more Aux fueling, wamp wamp wamp wamp, a year later still need Aux fueling. If your pump can't flow enough fuel what on gods green earth is an upgraded injector going to help?

[Sticky]

LOL. Yes its the injectors, not the poor flowing HPFP's. You guys swap these in, and let us know how they do. Companies tried the same with the Ecoboosts. Big splashy news "UPGRADED DI INJECTORS" No more Aux fueling, wamp wamp wamp wamp, a year later still need Aux fueling. If your pump can't flow enough fuel what on gods green earth is an upgraded injector going to help?

AWRON is doing things I haven't seen from anyone else so I'll at least reserve judgement until we see them in action.

[Tony@VargasTurboTech]

No, judgement does not need to be reserved, if they are selling upgraded injectors, and still using the stock pump set up, there is no benefits to be had. Unless you want to explain how HPFP crashing is going to be fixed by placing higher flowing injectors after the pumps?

[Sticky]

No, judgement does not need to be reserved, if they are selling upgraded injectors, and still using the stock pump set up, there is no benefits to be had. Unless you want to explain how HPFP crashing is going to be fixed by placing higher flowing injectors after the pumps?

I just think we should wait on more details regarding this upgrade before slamming them...

[sonicsonic]

N55 and S63R are 100% bolt-on on each other.

N55 and S55 use same injectors

So the upgrade for n55/s55 can be only s63tu/s63r injectors

[Sticky]

N55 and S63R are 100% bolt-on on each other.

N55 and S55 use same injectors

So the upgrade for n55/s55 can be only s63tu/s63r injectors

What do you mean by S63R?

[alex@ABRhouston]

N55 and S55 use same injectors

Same physically, but different part numbers because of hand selecting

[Traf]

LOL. Yes its the injectors, not the poor flowing HPFP's. You guys swap these in, and let us know how they do. Companies tried the same with the Ecoboosts. Big splashy news "UPGRADED DI INJECTORS" No more Aux fueling, wamp wamp wamp wamp, a year later still need Aux fueling. If your pump can't flow enough fuel what on gods green earth is an upgraded injector going to help?

I gotta say i agree with Tony, how would better injectors help if the pump can't keep up ?
I'm open to explanations.

[Terry@BMS]

I don't believe the S55 motors have an injector limit, that has been reached at least. We've definitely found the limits of the high pressure fuel system though.

[sonicsonic]

Same physically, but different part numbers because of hand selecting

https://www.etkbmw.com/bmw/EN/parts/...5397/appliance

The same!

[Sticky]

I don't believe the S55 motors have an injector limit, that has been reached at least. We've definitely found the limits of the high pressure fuel system though.

They I wonder, what would be the point of this? If the injectors aren't a limit for anyone why even bother?

Maybe they are pairing this with upgraded pumps? I don't know.

[sonicsonic]

What do you mean by S63R?

https://www.etkbmw.com/bmw/EN/search...odel+57047/USA

F85 x5m engine called S63R in some docs. The latest s63tu version

[Sticky]

https://www.etkbmw.com/bmw/EN/search...odel+57047/USA

F85 x5m engine called S63R in some docs. The latest s63tu version

I see, thanks.

I wonder what the differences are?

[sonicsonic]

I see, thanks.

I wonder what the differences are?

Very small changes to adapt this engine in new f85 body with 4wd and 8AT

[subaru335i]

Who said anything about still using the stock pump? There aren't really many details about these so maybe you need an upgraded hpfp too. The S55 HPFP is cam driven, what if you use a N54/55 HPFP in parallel with the stock S55?

[Terry@BMS]

They I wonder, what would be the point of this? If the injectors aren't a limit for anyone why even bother?

Maybe they are pairing this with upgraded pumps? I don't know.

Either they figured out something no one else is aware of at the moment, or did zero homework on the platform.

[alex@ABRhouston]

https://www.etkbmw.com/bmw/EN/parts/...5397/appliance

The same!

13647597870 N55
13647639994 S55

Thing is, they've been superseded (to a 13648625397) a few times as well, so I wonder if these really matter any longer :/

[Traf]

The S55 hpfp being cam driven can be upgraded like APR did on the 2.5 tfsi engine right ?
The S55 pump even looks like two 2.5tfsi pump in parallel.

[Sticky]

The S55 hpfp being cam driven can be upgraded like APR did on the 2.5 tfsi engine right ?

Cam driven pumps tend to be the easiest to upgrade at least from what I've seen.

[Den*]

Question to Tony:
- what you can propose instead of standard HP pump (without adding additional HP pump) like on N54s

Question to awron:
- are you guys going to put any details?

[Sticky]

Question to awron:
- are you guys going to put any details?

Yep, they sent me this:

Regards injectors we are selling them only in the M3/M4 GTS Turbo upgrade kit. When we designing M4 Turbo upgrade and new software we choose the Injectors with higher fuel flow because of cooling pistons and we need rich fuel mixture cos we want to drive lambda 0,77 constant

[TwistedTuning]

LOL. Yes its the injectors, not the poor flowing HPFP's. You guys swap these in, and let us know how they do. Companies tried the same with the Ecoboosts. Big splashy news "UPGRADED DI INJECTORS" No more Aux fueling, wamp wamp wamp wamp, a year later still need Aux fueling. If your pump can't flow enough fuel what on gods green earth is an upgraded injector going to help?

No, judgement does not need to be reserved, if they are selling upgraded injectors, and still using the stock pump set up, there is no benefits to be had. Unless you want to explain how HPFP crashing is going to be fixed by placing higher flowing injectors after the pumps?

100% agree here. On all these cars the injectors themselves have never been the issue at all. It has always been the HPFP. The HPFP cannot flow enough beyond a certain point to supply the injectors. Which is why Pressure falls off. If injectors were the issue, then rail pressure would generally stay acceptable and the AFR would simply swing lean.

There is no point in Injector upgrades without a Higher flowing Pump (HPFP)