Salco45

Fitted a Hpfp from W212 E63s and Lpfp from a w205 C63. HPFP in the pic here for part #. I hope this helps
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R Alexis Rodz

Got the same problem yesterday. I’m not tunned. Any updates on your car? It was a hiccup or something else?

allanyeung99

I think it was just a hiccup, havent happened yet and its been almost 6 months. I think it was the has station that I went to and the gas that I got caused it.

MWorks E wagon

did you have to recalibrate fuel map setting after installing hpfp?

Freder8d

Has anyone tried one of these yet?

http://martintuning.com/high-pressur...lc43-amg-m276/

Star4life

yep!

I know several cars running them. First cars had a few bugs to work out. Martin Tuning was great and kept close contact with all of them. A few of the cars are now running full e 85 or close to it and are currently dialing in the tune!

My personal vehicle is running low 9 second 60-130 on e30 tune with this pump!

Freder8d

Awesome!! That is good to hear. How are the few running E85 doing? What else did they need to do so?

Star4life

youll need LPFP, upgraded fuel rails, HPFP and thats it to run full e85 (with tune of course)

Martin tuning is working with Eurocharged to perfect the tuning. You can buy all the parts directly from Martin Tuning. That is what many have done so far.

MWorks E wagon

whats this going to cost complete and are you talking about the hpfp from the c63 or a spool thats on martin tuning website 3-4 for 50 hp ?

Freder8d

Nice!! Already have mine Eurocharged. Waiting for this to be dialed in.

ctravis595

So the trick is w212 e63s Hpfp and w205 c63 lpfp? I know someone running out of fueling under extended WOT with just intakes and a tune

Salco45

yh this set up seemed to work well enough to make 471whp and 560wtq. I still have the hpfp after selling the car if you want it.

ctravis595

yes send me a message or email ctravis595@gmail.com

Salco45

DMed you the details

Ginco

I'm interested too.

Salco45

I'll DM you

ninobrn99

What fuel rails were used? I’m looking at what fuel system upgrades I can do to ensure I get adequate fuel, but I cannot find anything on better injectors. Before this thread, I saw the Spool Performance HPFP and LPFP. I haven’t checked the prices on the MB parts, but I assume they’re a bit cheaper in the end.

ctravis595

most Hpfp kits for modern amg’s have you drill out the inlet port of the oem fuel rail’s to about 2mm. From the factory the opening is only about 1mm and is restrictive

ninobrn99

So is this a legit upgrade over the stock M276? Do we know what the gain is over the m276 one? I was considering the Spool FX-170, but I feel it might be overkill (which isn’t bad) for just wanting to keep it on UK95 octane. Has anyone drilled/milled out their stock fuel rails like ctravis595 mentioned? If so, then I’m going to scroll ebay to find some rails!

I was watching this video (that’s in German):

He’s using a HPFP from a Supra (from what I could vaguely understand since I don’t speak German). Hmmm…I’m going to start googling it a bit more to see compatibility.

Nino

ninobrn99

I spoke with the folks over at Spool Performance. Swapping from the factory M276 HPFP to the M278 isn’t an upgrade. I’m waiting on some German friends to let me know what they dude in the video was saying about using some other fuel pump. I believe he swapped to the BMW B58 Supra (Bosch BU58 TU) which is a HDP6 type fuel pump that supports ~575HP. The angle of the fittings are different (180 as opposed to 45 degrees like ours). Assuming the threads are the same, I wonder if the connector types are different and if so, how he got around that? If the threads are the same and the connector works with our cars, it would just be a matter of using an adapter to get the lines connected.

https://pumaspeed.co.uk/product-Genu...rade_18846.jsp

This is just me thinking out loud and hoping someone will chime in to help (or let me know why it wouldn’t work).

Ninoi

Arta.xerxes

understood what he said finally? Doable?

ninobrn99

no luck. I’ve reached out to a few places and none have responded. You’d need an adapter harness because the BMW one is different from ours. I figured it out because I’d ordered an extension that’s normally used for the upgrade on the B58 to see if it would work directly. The angle of the fuel lines are different, too. Ours are each at about a 45° from each other while the B58 are 180°.

Arta.xerxes

what if we do some welding and stuff?
the only option is aftermarket ones?? Unreasonably expensive !?

ctravis595

m278 may not be an upgrade … the amg version of the m278, being the m157 engine platform, may use stronger pumps on something like the e63s for example. I wouldn’t expect e550 pumps to be an upgrade

regarding the Supra fuel pump, the video is very difficult to understand. Most high pressure pumps run off of two wires, usually a constant or switched ground, and the other wire being either constant, or switched 12v. Ordering a suitable pigtail and splicing the Supra pump into the engine harness should be the easy part

regarding the angle of the fuel fittings, I do not believe it is a requirement that hard steel lines are used for the fuel lines. Perhaps a hptfe or whatever, flexible/soft high pressure fuel line will allow enough flex in the line to utilize pumps with different angles of fittings

and if the Supra pump is close to fitting, in theory this could open up our options to aftermarket Supra pumps as well

regarding the fuel line fitting. Mercedes will probably use something like a 40 degree flared globeseal type fitting. A competent hydraulic shop, in theory, may be able to fabricate custom hard lines if needed

TwoC400s

Stock Fuel HPFPs on M278 and M157 are identical (2016 S550 and S63 cross reference the same parts). They have two, that's why (if you'd like to turn the conrods of your M278 into ticking time bombs) they don't need fuel pump upgrades to reach M157 levels of power with just a tune.