ProMeth updates their N55/N54 direct port methanol injection system with with 90 degree nozzle holders and separate check valves per cylinder

[Sticky]

ProMeth has some incredible direct port methanol distribution systems for various platforms. Their previous N54/N55 design led to some debate but several tuners are running it out in the wild without issue and ProMeth continue to refine their design.

While their previous entry had four check valves this new design features a check valve under the methanol rail for each cylinder. Additionally, the new low profile 90 degree nozzle holders allow compatibility with more aftermarket intake systems:

new ProMeth BMW N55 direct port methanol injection system. Low profile 90 degree nozzle holders allows this direct port system to fit under most of aftermarket cold air systems. This new kit is extremely easy to install. Six pre made stainless steel Teflon hoses connect to our BMW N55 specific methanol rail located under the intake manifold. Each cylinder has its own separate check valve located on the methanol rail. The rails have been sent out to be hard coat anodized. Shown in the pictures is a raw aluminum rail. Systems will ship with black hard coat anodized rails.

Contact ProMeth for more info/pricing.

[Terry@BMS]

Yeah these direct injection meth setups are overly complicated and a headache to tune. Two nozzles in the chargepipe is the way to go for WMI IMHO.

[Sticky]

Yeah these direct injection meth setups are overly complicated and a headache to tune. Two nozzles in the chargepipe is the way to go for WMI IMHO.

That is indeed the BMS position which is fine of course. @Payam@BMS attempted to argue against this over check valves which the previous system had four and now there is one per cylinder.

Different options for different people

[Payam@BMS]

That is indeed the BMS position which is fine of course. @Payam@BMS attempted to argue against this over check valves which the previous system had four and now there is one per cylinder.

Different options for different people

This is the correct way of doing things, the other way was trash

[Sticky]

This is the correct way of doing things

I know as that's what I said.

[Terry@BMS]

That is indeed the BMS position which is fine of course. @Payam@BMS attempted to argue against this over check valves which the previous system had four and now there is one per cylinder.

Different options for different people

Check valves make it operational but then you have a pressure loss across each check valve. And if one of those injectors clogs or doesn't have the exact same spray pattern better hope the JB4 fuel trim variance safety is there working to pick it up. I know people run kits like this and are happy with them but what they think is an upgrade is really a downgrade, IMHO.

[93siro]

Does meth get atomized enough in that short distance?

[AWSAWS]

Dam. I hacked a system together like this years ago. I could never imagine that this setup would sell as a main stream product. It's full of failure points. A nightmare to maintain and to diagnose issues. Very archaic.

[Payam@BMS]

Dam. I hacked a system together like this years ago. I could never imagine that this setup would sell as a main stream product. It's full of failure points. A nightmare to maintain and to diagnose issues. Very archaic.

[Sticky]

Very archaic.

Direct port is archaic? I've seen it all now.

[AWSAWS]

The way it's controlled is archaic. No precise metered flow control like you get with injectors, especially compared to a DI upgrade with full DME control.

[AWSAWS]

Plus tell me how you diagnose a single failed check valve or blocked nozzle. Detonation or hydrolock probably.

ARCHAIC!

[e90Bimmer335]

I always thought it would be best further from the intake ports to give plenty of time to atomize, after that there is no distribution issues. If air is making it there, the meth is too. Direct port is cool for keeping valves clean since it's hosing them down directly, but as was said already if one clogs there's no way to know that until it goes lean in that cylinder and then it's too late

[Sticky]

Plus tell me how you diagnose a single failed check valve or blocked nozzle. Detonation or hydrolock probably.

ARCHAIC!

Even cylinder distribution is just so 'archaic'

Which is odd because you see it on the highest horsepower platforms examples...

So direct port, no-no archaic, direct injection, oh wait, that's good. lol

[Torgus]

If you use the correct micron in line filters the chance of a clogged jet is VERY unlikely imo.

That being said a bad check valve would be a bitch.

I remember everyone giving Shiv a ton of $#@! for running 4 meth nozzles or whatever it was on his single turbo. Are we now saying that is a better idea than direct port with check valves?

What is the general consensus of how much CP meth is safe to run through X number of nozzles? 1000CC through 2 ok? 3 at 1500CC? Just curious as to everyone's thoughts.

[Sticky]

I remember everyone giving Shiv a ton of $#@! for running 4 meth nozzles or whatever it was on his single turbo. Are we now saying that is a better idea than direct port with check valves?

What is the general consensus of how much CP meth is safe to run through X number of nozzles? 1000CC through 2 ok? 3 at 1500CC? Just curious as to everyone's thoughts.

Some of the $#@! thrown at him was unfair. Basically people saying he was using a meth firehose.

Well, who wasn't back then for fuel?