helix overdrive or vtt single barrell

[Traf]

You don't have to cut it, you can replace the whole cooling hose which makes it reversible or just buy a new cooling hose that you cut.

It's not irreversible and not permanent

How can you claim both install take the same time then ? One is plug and play, the other you need to go under the car and cut cooling hoses and stuff...
I'm begining to doubt your objectivity...
Try to face the facts, Helix is a much more elegant and easier to install solution. Unless you are a VTT fanboy i see no reason to go with the single barrel.

 

[martymil]

Easier does not mean better, elgant we have very different views on what's elegant.

And yes around the same time or maybe around uo to 1hr longer pending on the mechanics experience with the kit.

Water line takes around 10 min to change and gets rid of the unreliable factory plastic pipe.

The whole setup is far more robust in the long run as proven, i have not seen one failure due to the design.

 

[Traf]

idk why i argue with you, you are a unobjective VTT fanboy.

 

[martymil]

So why don't you sell your shotgun and get a helix, its easily reversible.

But deep down you know whats better and your running it.

 

[Traf]

You like to have the final word don't you ?
Helix is much easier to install than Shotgun, should you change if you already have a single barrel? Fuck no thats stupid, both do the same thing, if single barrel works for you, don't change (my case)
What should you pick if you don't have any hpfp upgrade ? Helix...

Let's not hijack the thread any further.

 

[fmorelli]

What should you pick if you don't have any hpfp upgrade ? Helix...

That's your opinion. Startup vibration is an inconvenience. Operating vibration is another matter.

Filippo

 

[Traf]

That's your opinion. Startup vibration is an inconvenience. Operating vibration is another matter.

Filippo

I have the startup rattle with the single barrel.

 

[martymil]

Tune it out the tables are available as its only the valve working overtime to control the target pressure when cold and under 40c water temp.

There's a thread I started talking about this and its been fixed a long time ago

 

[fmorelli]

I have the startup rattle with the single barrel.

Yeah - it's the vibration while going 120km/h that is the concern

Filippo

 

[135i2]

I run the VTT double barrel on my big single turbo. Has been a brilliant solution. I would much rather run off the belt than the flimsy vacuum pump and 'bracket fix'.

 

[The Banshee]

N54 is still at port injection or nothing. That is the conclusion I came up with when researching this topic.

Some guys have sporadic success. Most of them are vendors or vendor associates. Many have issues with both options and don’t post.

 

[gmagnus7]

Could always wait to see if M18's HPFP solution works, I believe they have two coming.

 

[Traf]

Could always wait to see if M18's HPFP solution works, I believe they have two coming.

The porsche pumps ? I thought they'd given up on the idea...

 

[foe516]

thanks, the shotgun install does look a little intimidating. do you have to drill the fuel rail with the helix?

i think i will wait it out unless i change my Mind before midnight when the vtt sale ends, its $120 0ff and comes out to $680 shipped. my turbos are finally installed, just have to bleed the coolant and get an alignment. i haven't driven the car since march of 2019, might just push it with the TBI thats installed on the car and see where that lands me. i popped out the filter in the hpfp and changed the hardline when i did a walnut blast last year while the car was apart.

 

[martymil]

The shotgun install looks intimidating but really its easy.

Yes drilling the rail helps any di solution you choose with keeping the volume of fuel up to the injectors.

The fuel rail can empty faster than the pump can fill it due to the restriction in the rail.

 

[doublespaces]

The porsche pumps ? I thought they'd given up on the idea...

The other one is an N55 pump combined with an N54 pump. It would let you run the higher output solenoid style pumps off the S55, S58 etc.

 

[martymil]

If that works properly that would be a nice solution For the active steering guys.

 

[gmagnus7]

Yea I think M18 had one option with a single piston type porsche pump to replace the N54 one entirely, and a second option to add an additional inline pump (N55 or whichever) to the existing pump.

Also XDI is finally working on a E85 rated HPFP for the N54, and also aftermarket piezo injectors too!

Who knows if either will work or how long it'll be before they release them.

 

[martymil]

XDI released the FX150 and 180 already so it wont be a problem getting the fuel pressure, just need to work out how to control it.

 

[doublespaces]

Your main hope of that happening just bought an M2c, time to move onto the S55.