My New N54 Project

[KrS24]

I will post the package info in our advertisers section once it's ready. Currently the lead time is a little long. Working on reducing that. Then there is reliability tests. It just might not go into my car. I have a few guys hounding me for them. I am still a massive fan of the n54 single turbo. We attempted the hybrids because it is a common request from customers but the import option was prohibitive once you factor the exchange rate and shipping costs into the equation.
Rest assured it will be substantially less expensive than importing.


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[KrS24]

I have been running the car daily for the past month. So far so good.
I ran into a few issues, not with the turbos. The final(I pray) issue is with a new 3.5bar map sensor. Either the sensor or the adapter is damaged. The stock sensor works perfectly.
We dyno'd the car at 15psi on the stock BMS Pump flash and made 404whp.
To make that power on our dyno with stock turbos you need at least 22psi plus FBO + inlets. The key difference between the two cars is where it makes the power. At 6400rpm the Hybrids make 80+ more hp than a stock turbo car.
I benchmarked the Z against a 405whp stock turbo n54 335. At 15psi the 335i was left behind like he was looking for parking.
At 17psi target I put down 435whp on the stock BMS pump flash.
I have been road logging the car so far and it holds 21psi to the redline.
I have over 200 3rd and 4th gear pulls to the redline now.
The goal is to hit the 500whp mark reliably. I am pretty sure that will be more than possible at 22-23psi giving the logs. Once we starting building a custom flash for the car we should see further gains.
What surprised me most about the hybrids is how relentless they are. I expected to the power to drop a little after 6000rpm but they just kept going to the redline. It's not as aggressive as a single turbo but very similar.

We are not going for the hybrid power records with this set. There are many more powerful sets of hybrids on the market which are performing well.
Our goal was to create a middle ground between our stock turbo cars and our single turbo monsters.

Package information will be available soon.
If you have any queries please contact me.

 

[Woodies]

Yeah yeah yeah, sounds super promising!!!!!
Glad someone is looking at a more sustainable option rather than just the most powerful. Great stuff and following the updates closely.
:coolShake::coolShake:

 

[KrS24]

Stock twins Vs Hybrid

The stock turbo car's dyno shown, is a FBO car running the BMS race flash and targeting 24psi

The delay in the power build up on the Z4: The rear wheels lost traction on the dyno. When adding someone to the boot the wheels began to rub. Hence I had to feed the power in. Will have to look for a way around this considering the plans for the car. Baring in mind there should be a minor loss in spool due to the bigger wheels and shaft.

 

[ShaunB]

This is going to be awesome, can't wait for the release.

 

[gavsadler]

That's a strong graph, well done on the developments.

It will be interesting to see the graph if you can get all the power down properly on the dyno, I would think being a hybrid that it will be similar to stock, but continue to climb on the same trajectory up to red line.

 

[akash]

Keeping an eye on this thread, cant wait to see the final product

 

[PDBoosted]

This is just awesome!

I hope I will be able to get a set of these:rollsmile:

 

[S65B44]

Some sick numbers there... Cant wait to see what 23 psi gets you.

 

[BMW135FREAK]

Cant wait to see the propper gains on the hybrids.

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Cant wait to see what max boost will do.

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My lpfp was sorted. Thanks buddy

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Now just to find intercooler secondhand.

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When u sorting out sensor issue

 

[KrS24]

The car is running well now. Hitting 25psi consistently. PWM ranges from mid 50's to mid 60's. I can't recommend boosting higher on a daily setup. The turbos are good for a little more but I am not trying to set records.
The turbos will be removed from the car shortly and inspected to ensure everything is 100%.

 

[c0mrade]

keeping an eye on this :thumbs:

 

[KrS24]

I have been exceedingly busy lately. Spending most of my time at various mines around the country. So no time to continue with the hybrids. The turbos were removed from the car and inspected. I am happy to report all is well. No shaft play. No damage to the wheels. The turbos were given to a second turbo builder to inspect. He gave us the all clear. Soo it looks like we have a good product. The turbos have since been fitted on another Z4. The owner is loving the new power. He is enjoying 430whp @ 17psi daily. We are waiting for a few supporting mods to crank up the boost. The car is currently on run flats and is a challenge to keep in a straight line. We are busy getting the wastegate flapper pieces machined and will start taking orders soon.

 

[R!Yo]

Was nice to meet at Raceday Chris!

It is really awesome to see this package being made locally, affordably and best of all reliably! Keep up the great builds man, cant wait to see the next step on your Z.

 

[KrS24]

So the upgraded 304 Stainless Steel flapper parts are in...

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[Fuzz123]

Very interesting read. Well done!:clapper:

 

[KrS24]

Just a small update. The car made 478whp on 20psi target. The car still has OEM downpipes minus the cats. The owner will be fitting 3" downpipes and better tyres this week so the car will be ready for more.


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[KrS24]

Now that I have a little time on my hands, the development continues with my Z.

I will just leave this here

 

[gavsadler]

Colour coded turbine wheels

At least 10wkw?

 

[KrS24]

You missed a 1.
This turbo is rated 110kw more than my previous iteration. Hopefully the dual ball bearing will help the spool up time. My goal is to get it as close to the twins spool as possible.


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