BNR Stage 2 Turbo

[fiveight]

A few members are interested in the BNR option to upgrade their turbo's, Is the BNR due to oem design a simple replacement or are there small adjustments that need to be done to make it work?

The turbo bolts onto the the manifold and dump pipe without any need for modifications. There was some creative "plumbing" required for the oil lines but nothing a crafty mechanic like you Mitch couldn't come up with. I'll ask Brett next time I speak to him if you want specifics. You can have a look at mine though if you want?

[MRTBrett]

The turbo upgrade needs to be carefully chosen.
We have now tuned many MPS's with many and varied mods.
Some work, a lot dont.
People often fit parts when they THINK they will help and then are upset when they dont get the result they hoped for.
(IE CAI'S make ZERO power on these cars when compared to a good tune, they only help when the car has big internal mods and need a larger dia intake than the OEM MAF)

We recently tuned a car that had big internal mods and it out flowed an aftermarket CAI and actually needed a new larger CAI and matching MAF with a complete retune to re scale the MAF.

A new turbo is a good point, aint no benefit fitting one unless the car has at LEAST:
ECU tune
front half of zorst
decat 2nd
etc

Then the turbo as Troy has found will give benefit up top, but not as much as CAN be gained in future when the internals of the engine are upgraded. As a result the turbo needs to be limited in its boost.

Bottom line a new turbo is labour intensive, not 100% "bolt on" and needs a full blown custom retune..
and this ads up

I hope this helps

Brett

[rayd]

The turbo upgrade needs to be carefully chosen.
We have now tuned many MPS's with many and varied mods.
Some work, a lot dont.
People often fit parts when they THINK they will help and then are upset when they dont get the result they hoped for.
(IE CAI'S make ZERO power on these cars when compared to a good tune, they only help when the car has big internal mods and need a larger dia intake than the OEM MAF)

We recently tuned a car that had big internal mods and it out flowed an aftermarket CAI and actually needed a new larger CAI and matching MAF with a complete retune to re scale the MAF.

A new turbo is a good point, aint no benefit fitting one unless the car has at LEAST:
ECU tune
front half of zorst
decat 2nd
etc

Then the turbo as Troy has found will give benefit up top, but not as much as CAN be gained in future when the internals of the engine are upgraded. As a result the turbo needs to be limited in its boost.

Bottom line a new turbo is labour intensive, not 100% "bolt on" and needs a full blown custom retune..
and this ads up

I hope this helps

Brett

^^ what he said!

[luke 3mps]

The turbo upgrade needs to be carefully chosen.
We have now tuned many MPS's with many and varied mods.
Some work, a lot dont.
People often fit parts when they THINK they will help and then are upset when they dont get the result they hoped for.
(IE CAI'S make ZERO power on these cars when compared to a good tune, they only help when the car has big internal mods and need a larger dia intake than the OEM MAF)

We recently tuned a car that had big internal mods and it out flowed an aftermarket CAI and actually needed a new larger CAI and matching MAF with a complete retune to re scale the MAF.

A new turbo is a good point, aint no benefit fitting one unless the car has at LEAST:
ECU tune
front half of zorst
decat 2nd
etc

Then the turbo as Troy has found will give benefit up top, but not as much as CAN be gained in future when the internals of the engine are upgraded. As a result the turbo needs to be limited in its boost.

Bottom line a new turbo is labour intensive, not 100% "bolt on" and needs a full blown custom retune..
and this ads up

I hope this helps

Brett

Yep good old black beast, many people learned a few things. Was a learning one for me lol..

[Bakis]

I'm thinking BNR S2, but at the same time will be doing at least the 2XS twin dp and cat back + CpE side and tranny mounts. Currently have FMIC, TIP, CAI and tune the question is will it be worth investing in some headers?

Or will the extra low down torque they provide be putting to much strain on the stock internals.

Currently love the way the car drive and feels would like some more top end power and mid range nm so i think a BNR S2 is the best bang for the $$$, without changing too much bolt on stuff. Would only be wanting to run a MAX of 19 - 20 psi through the engine for safety proposes, the smallest amount the BNR 2 can run is about 17 i believe.

[SarcasticOne]

Get a fuel pump as well
Personally, think either stage 1 or 3 is way to go... just in terms of value for money

By 19-20 psi, did you want to hold that through to red line? Or just mid range? Stock turbo is capable of 18 psi from about 3000 to 4500 rpm efficiently

Sent from my Galaxy Nexus using Tapatalk

[Bakis]

For the stage 3 BNR i just need to get a larger Inlet pipe yes? Currently the CAI that i've got from HP-F is 3 or 3.5 inch in diameter.

Does anything else need to change? If i want to run a max psi of 20 is a stage 3 even necessary? Cause its only $100 more for that but then the other way might be worthwhile only getting a stage 1 to save me the $200 odd.

Fuel pump internals are very close too

[SarcasticOne]

For the stage 3 BNR i just need to get a larger Inlet pipe yes? Currently the CAI that i've got from HP-F is 3 or 3.5 inch in diameter.

Does anything else need to change? If i want to run a max psi of 20 is a stage 3 even necessary? Cause its only $100 more for that but then the other way might be worthwhile only getting a stage 1 to save me the $200 odd.

Fuel pump internals are very close too

Other thing to remember, 15 psi on a stage 3 is much more air than 15 psi on a stock turbo

A bnr uses stock inlet pipe if memory serves correctly, so if your cai fits a stock Turbo, you're fine for a bnr...

Here is a dyno graph of someone's bnr stage 3:
uploadfromtaptalk1328483663635.jpg

400hp is 300kw
300ftlb is 400NM

Stock block as a fyi...

Sent from my Galaxy Nexus using Tapatalk

[Bakis]

Other thing to remember, 15 psi on a stage 3 is much more air than 15 psi on a stock turbo

A bnr uses stock inlet pipe if memory serves correctly, so if your cai fits a stock Turbo, you're fine for a bnr...

Here is a dyno graph of someone's bnr stage 3:
uploadfromtaptalk1328483663635.jpg

400hp is 300kw
300ftlb is 400NM

Stock block as a fyi...

Sent from my Galaxy Nexus using Tapatalk

Yeah that's what i'm thinking about the air flow, BNR say that the stage 2 flows 10% more air then stock so i guess the stage 3 might do 20 - 25% more then stock... In that case wouldn't need to run big boost to make moderate power.

[luke 3mps]

Yeah that's what i'm thinking about the air flow, BNR say that the stage 2 flows 10% more air then stock so i guess the stage 3 might do 20 - 25% more then stock... In that case wouldn't need to run big boost to make moderate power.

That 10% more is over the BNR stage 1, BNR stage one flows more than standard..