[madmanhiker]

love this thread!! !!!

[F335i]

sweet clip, she sounds hungry!

[BoostAddict]

I love the way the N55 sounds, and this turbo just makes it even better. Great Job Tony

[AlpineSwift]

Been sitting here contemplating N54 vs N55 for the past few months for my next vehicle. Starting to wonder why the hell I'm even considering the N54 right now after hearing that clip. Holy Jesus! Subscribed.

[loesch]

Originally Posted by AlpineSwift

Been sitting here contemplating N54 vs N55 for the past few months for my next vehicle. Starting to wonder why the hell I'm even considering the N54 right now after hearing that clip. Holy Jesus! Subscribed.

I'd wait it out another couple months to see how the bottom end hold up. Big question mark there. No one knows until these Vargas N55s get some miles on them.

[NeoNz]

Originally Posted by loesch

I'd wait it out another couple months to see how the bottom end hold up. Big question mark there. No one knows until these Vargas N55s get some miles on them.

Ditto. Who's providing the backend flash? E85 pump works with this add on?

[chronos6]

Originally Posted by loesch

I'd wait it out another couple months to see how the bottom end hold up. Big question mark there. No one knows until these Vargas N55s get some miles on them.

Definitely want to know this. No point in my opinion for myself to upgrade if it can't hold it for let's say 5000 miles of abuse with a good tune.

[CombatNinja]

If this thing puts down a reliable, repeatable 450whp I am getting it.

Vargas, since you are the only man on earth to have installed this thing, where would you ballpark the labor hours? I'm thinking 15-20 but I'm curious what you think.

[135pr]

In for more info.

[Tony@vargasturbotech]

Originally Posted by CombatNinja

If this thing puts down a reliable, repeatable 450whp I am getting it.

Vargas, since you are the only man on earth to have installed this thing, where would you ballpark the labor hours? I'm thinking 15-20 but I'm curious what you think.

Thing installs just like stock. It's a 10-12 hour job if you know N54's or N55's not tough at all. If you don't, give yourself 15. Subframe has to come down either way.

[CombatNinja]

Thanks for the info on the install.

[Tony@vargasturbotech]

Just wanted to add. The new stage 1 option that is available is stating near stock spool is one of the benefits. I can assume it does in fact spool the same as stock since the turbine wheel remains unchanged. But we now have taken multiple logs, and have compared them with stock logs. The Ball Bearing Stage 2 CHRA is spooling up very close to the same as stock, meaning there really is no downside here. Increased flow for the compressor and turbine sides, Ball Bearing Durability, 500+ WHP capabilities, and stock spool. Its just an all around win...

[loesch]

Keeps getting better. I'd love to take a peak at those logs. Understandably that's probably top secret for now.

[Tony@vargasturbotech]

In case anyone missed them previously, here are the wheel specs.

I also put together a comparison to stock and the stage 1 turbo.

Compressor:

Stock Compressor: Inducer - 45.8mm, Exducer - 62mm (65.3mm at extended tip)

PURE Compressor Wheel: Inducer - 49.5mm, Exducer - 67mm (72.5mm at extended tip)

Vargas Stage 2 compressor wheel: Inducer - 57mm, Exducer 76mm (78.5mm at extended tip)


Turbine:

Stock turbine: Inducer - 53mm, Exducer 47mm

Vargas Stage 2 Turbine wheel: Inducer -60mm, Exducer - 55mm

Comparison results:

Vargas Stage 2 Compressor:
Inducer - 11.2mm bigger than stock, 7.5mm bigger than stage 1
Exducer - 14mm Bigger than stock, 9mm bigger than Stage 1

Vargas Stage 2 Turbine:
Inducer - 7mm bigger than stock and stage 1, Exducer - 8mm bigger than stock and stage 1.

[JETmn]

Very nice, those numbers might not seem huge but remember we are looking for flow area.

Stock compressor inducer is 1648 mm^2 and the Vargas is 2552 mm^2 or a 55% increase in flow area! That is a huge difference. I don't have time right now to do all of the dimensions, but that gives you an idea.

If spool stays near stock -as stated- this is going to be a great turbo.

[Tony@vargasturbotech]

Thanks for that info @JETmn. Also keep in mind, at 400 WHP the stock turbo is basically completely maxed out. For comparison sake Garrett rates their 53mm turbine wheel (same size as the stock turbine with their cast 60mm compressor at only 290 BHP. You jump up to the 53.85 turbine and the GTX wheels and you have the GTX2867 which has a bigger turbine than the stock unit and a similar compressor wheel to the stage 1 and you get a BHP rating of 475, that is in native garrett housings which are much larger and more free flowing than the stock housings housing are. We used a turbo that is rated at 640 BHP expecting it to see 500-550 WHP with the smaller housings due to the efficient DI motor. The stock turbo is able to make 400 WHP or 440BHP with such a small turbo also due it being such a efficient DI motor. Without upping the turbine size and just putting a bigger comp wheel, its going to be very hard to get much more power out of these things, flowing more up top is usually a by product of bigger A/R's and turbine wheels, not as much compressor wheels. Compressor wheels can increase the efficiency of the turbo and usually make the same air at lower shaft speeds which will help increase life, etc. I would be very curious to see if the stage 1 would provide any increases over stock as the turbine wheel size is basically maxed out already at current levels. But you never know until you try. Interested in seeing dynos.

[Tony@vargasturbotech]

DV is fixed and will be part of every kit going forward. The DME now has full control of the DV as if it is a electronically controlled, but it is actually controlled by vacuum with a much stronger spring capable of holding up to more boost before being pushed open. This also means we can continue testing, as I had halted testing due to the surging the compressor was seeing with no DV. So back to seeing what this thing can do..

[deemarr 335i]

Awesomeee

[deemarr 335i]

Originally Posted by Vargasturbotech

DV is fixed and will be part of every kit going forward. The DME now has full control of the DV as if it is a electronically controlled, but it is actually controlled by vacuum with a much stronger spring capable of holding up to more boost before being pushed open. This also means we can continue testing, as I had halted testing due to the surging the compressor was seeing with no DV. So back to seeing what this thing can do..

Tony will you sell the DV upgrade as a separate thing for stock turbo users or is it not necessary ???

[Tony@vargasturbotech]

Originally Posted by deemarr 335i

Tony will you sell the DV upgrade as a separate thing for stock turbo users or is it not necessary ???

We will in fact be selling the vacuum operated DV as a complete kit for stock turbos. As more tuning comes out, and the boost is turned up on stock turbos, it will be necessary. The kit will include, Forge billet DV valve, harness, solenoid, and all hardware needed for install, we do not have a price yet, but we will have one soon. I do have to add, changing this DV with the turbo on the car requires removal of water pump, thermostat, intake, and charge piping from the turbos. It's not an easy job.

[j23a45m]

great news Tony

[deemarr 335i]

Originally Posted by Vargasturbotech

We will in fact be selling the vacuum operated DV as a complete kit for stock turbos. As more tuning comes out, and the boost is turned up on stock turbos, it will be necessary. The kit will include, Forge billet DV valve, harness, solenoid, and all hardware needed for install, we do not have a price yet, but we will have one soon. I do have to add, changing this DV with the turbo on the car requires removal of water pump, thermostat, intake, and charge piping from the turbos. It's not an easy job.

Ok cool thanks for the update.