Rb25 Turbo Upgrade, All Dyno Results

[DCJ Panther]

Mainline Dyno 450 Kw on 98 Octane

This ER34GTT is running a RB25 with a nitto stroker 2.8 kit. 
A Haltech Elite 2500

Just a quick comparison running V Cam Off and On
Boost duty was left the same. 

Pump gas 
450kw on 25psi with VCAM 
and
400kw on 24psi without. 
50KW gain!

Tuned by Jacky @ #sthitec #jtune_nz

Yelsha D Trigger Kit, YelshaD Billet Cam Covers, YelshaD Water Pump Blank off, YelshaD Alternator Kit, YelshaD Fuel Bulk Head

Edited August 8, 2021 by DCJ Panther

[iruvyouskyrine]

Do you mean VCT or V-Cam? I don't belive you can have V-Cam with billet cam covers

[Piggaz]

On 14/08/2021 at 12:46 PM, iruvyouskyrine said:

Do you mean VCT or V-Cam? I don't belive you can have V-Cam with billet cam covers

It’s VCT/RB25. It’s not a Subaru sprocket that vcam uses. 

[DCJ Panther]

On 8/14/2021 at 2:46 PM, iruvyouskyrine said:

Do you mean VCT or V-Cam? I don't belive you can have V-Cam with billet cam covers

Yes just NEO VCT

[DCJ Panther]

[Malar1898]

Engine: RB25DET Neo with stock internals

Haltech Plug n Play ECU

HKS Airfilter, HKS Silent Hi-Power Exhaust Catback, GT28 Turbo, R8 Ignition Coils, Fuel Pump, Intercooler.

Rest is stock, including stock Catalysator and Intake (Street legal in switzerland)

Aprox. 320kw

[Malar1898]

Sorry, double posted

Edited September 19, 2021 by Malar1898

[hypergear]

R34 GTT

Rb25det NEO Stock Cams, factory engine
HyperGear ATR45SS-RB26 Turbocharger
ID 1500cc injectors
Twin Walbro 525L fuel pump
Adaptronic Plugin ECU
600x300x81mm PWR Cooler kit
3inches turbo back exhaust
4inches intake pipe with Pod
Split fire coil packs
T3 high mount with 50mm external gate
Car made 390rwkws @ 26psi, E85 fuel. 22psi @ 3500RPM.

[webomur]

Hi, My car nissan 200sx s14 

rb25det neo full stock engine

GTX3076 Gen1 Turbo
E5 Fuel Pump
Ecumaster classis ecu
985 cc bosch 
oem ignition
1 Bar Boost
Mustang Dyno 330 WHP (this dyno is always low power 😎 )
100-200 km/h 1 bar 9.8 second
100-200 km/h 1.4 bar 7.53 second 
car weight 1350 kilos

Edited November 15, 2021 by webomur

[Hpjunky]

R33 gtst

Rb25det nitto I beam rods cp pistons, head studs main studs, completely stock head including cams   

2x044 pumps   Garret gtx3076gen2 3" exhaust no cat power FC and z32 AFM tuned on e85

Main line hub dyno                  414kw @24psi                        348kw @20psi

 

Edited February 20, 2022 by Hpjunky
Miss spelling

[hypergear]

Nissan R33 GTST Drift car
Forge bult Rb25det Neo engine
Stock head with upgraded valve springs
Nitto Pistons and Con-rods
HyperGear ATR43-SS3 Pro Externally gated turbocharger
6 boost manifold and twin Turbo smart 50mm gates
ID 1650cc injectors + Walbro 520 Fuel pump 
Forward facing plenum 
Front mount PWR intercooler kit 
Fuel system maxed at 465rwkws @ 23psi, full boost by 4K, E85 fuel.

 

 

[khezz]

Great result. Well done. Always amazes me how well the RB heads flow. I mean, the build list is so simple and this thing will kill 99% of production exotics. 

[hypergear]

Nissan R33 GTST Drift car
Forge bult Rb25det Neo engine
Stock head with upgraded valve springs
Nitto Pistons and Con-rods
HyperGear ATR43-SS3ProR Externally gated turbocharger
6 boost manifold and twin Turbo smart 50mm gates
ID 1650cc injectors + Walbro 520 Fuel pump 
Forward facing plenum 
Front mount PWR intercooler kit 
Fuel system maxed at 465rwkws @ 23psi, full boost by 4K, E85 fuel.

 

 

Twicked this turbo alittle bit, Made same power, picked up another 500RPM of response and 100kws in mid range at same boost level or 23psi, still running out fuel even with an extra pump.  I think the original version of SS3Pro would peek 70kws more at full capacity.

[hypergear]

R33 GTST

Rb25det NEO Stock Cams, built buttom end
HyperGear ATR45SS Turbocharger
ID 1500cc injectors
Twin Walbro 525L fuel pump
Link ECU
600x300x81mm PWR Cooler kit
3.5 inches turbo back exhaust
4inches intake pipe with Pod
Split fire coil packs
T3 high mount with 50mm external gate

Car made a super responsive 512rwkws plumbed back @ 32psi,  and 500rwkws externally gated @ 28psi, full boost @ 4000RPM 

 

Edited June 29, 2022 by hypergear

[Dose Pipe Sutututu]

On 16/06/2020 at 10:39 AM, Dose Pipe Sutututu said:

Time for an update to the shit box, this time with bigger and badder dose pipe for you dose bitches. Nearly 3 years in the making too

407kW @ 2bar -> 1.8bar  on E85. Mainline AWD dyno, with 16kph/sec ramp rate.

Mods:

• Garrett GTX3576R Gen 2
• Garrett T3 1.01 divided rear housing
• Turbosmart Gen V 50mm
• Sinco T3 twinscroll, single gate manifold (pulses split to the gate seat)
• 3.5" Turbo back with 5" body Venom Cat, 2x Mufflers
• Generic built RB25DET NEO motor
• Spool billet oil pump gears
• Tomei 260/9.15 Poncams
• 80lb Valve Springs & Ti Retainers by Performance Springs
• HDi Hybrid 76mm eBay FMIC (holding back the power)

With high IATs air density is dropping, thus boost is bleeding off as well with small DC corrections on the boost DC table. I did order a Plazmaman Pro cooler but it didn't arrive on time. IAT peaked at 57 degrees C in a dyno room with an ambient temp of 19 degrees C. From the data, reducing the IAT will improve the boost control up top, get more air into the motor and will yield the results I'm after.

Once the FMIC comes, I'll be back for round 2.

Special Thanks to:

• Alex at Birrong Automotive for allowing me to use his dyno
• Adam at Weldspeed for the fabrication work
• Yez Racing for supplying most of the parts

Data, etc. available in my build thread here:

 

Sorry for the lack of derived RPM, I forgot to set it up, in the Analyse screen it shows you true RPM vs. Power vs. Torque.

Log during run:

IAT post run:

 

Time for an update, same turbo but refreshed motor now with 437.9kW at 1.7bar boost dropping down to 1.5bar towards the redline. Looks like I've maxed out the compressor at this stage. I believe there are some improvements to be had such as venting the gate to atmosphere and deleting the cat.

Will be back to get the closed loop boost control dialled in when I have time. Was a pretty surreal experiencing for me as I've never tuned anything this powerful nor anything that revs this high! Alex said I could safely bring the rev limiter to 8600rpm if I wanted to (which I did lol).

Mods:

• Garrett GTX3576R Gen 2
• Garrett T3 1.01 divided rear housing
• Turbosmart Gen V 50mm
• Sinco T3 twinscroll, single gate manifold (pulses split to the gate seat)
• 3.5" Turbo back with 5" body Venom 100 Cell Cat, 2x Mufflers, Gate plumbed back
• Generic built RB25DET NEO motor (CP Pistons, Manley Rods, Nitto rings, ACL bearings, ARP dis dat, etc.)
• Spool billet oil pump gears Nitto Oil Pump
• Tomei 260/9.15 Poncams Kelford 264/272 244-B 
• 80lb Valve Springs & Ti Retainers by Performance Springs
• HDi Hybrid 76mm eBay FMIC Plazmaman 76mm Pro Series
• Plazmaman Intake Manifold
• ATi Balancer

Below is the log (no idea why SAU makes the thumbnails so damn small now. Ignore the oil pressure, it's reading wrong. I suspect the sensor has the right part number printed on it but it's actually a 5 bar sensor (not 10 bar).

Here's a video my mate recorded of me tuning, you can see I'm constantly looking at Alex to see if I need to abort the run. Previously there was a misfire event that sounded like engine knock from where he was standing. I took out the plugs then gapped them down to 0.4mm and it sure did the trick!

 

 

 

[hypergear]

R33 GTST
Rb25det Block + Rb26 Crank
Arias 86.5mm Pistons
Eagle H beam rods
ARP 2000 Main studs
Half inch ARP head stud conversion
N1 Nissan Oil pump with Spool gears
Reconditioned head with Kelford Valve springs
1650cc Fuel Injectors
520L fuel pump
Haltech ECU 
High mount exhaust manifold
HyperGear ATR43SS-3 Turbocharger
50mm external gate
Tuned at Chequeredtuning
Final result of a responsive 455rwkws @ 26psi maxing out onboard map sensor

[hypergear]

R33 Rb25det 2.5L engine

CP Pistons

Spool I beams

Stock crankshaft

Spline drive oil pump with billet gears

Arp2000 headstuds

Athena headgasket

Performance valve springs

Stock cams

2400cc Fuel Injectors

2x 520L fuel pump

Rb26 inlet manifold and itbs

Crg twin scroll t4 manifold single 50mm turbosmart gate

Haltech ECU

HyperGear ATR45SS2-RB26 Turbocharger in T4 .82 rear

All work done and tuned by CPG

Final result of 635rwkws / 754rwkws @ 37psi with Nos.

E85 fuel

 

 

 

 

[hypergear]

R33 GTST Series 1.5
Rb25det Engine:
CP pistons
Spool Con-rods
Kelford 262 / 272 Cams
Performance valve springs
APR head studs
ID 1650 injectors
2x Walbro 460L Pump
GTR Coilpack upgrade
HyperGear ATR43SS2 Turbocharger
6 boost high mount manifold
Greddy Forward facing plenum with 3 inches throttle body
PWR 600x300x81mm intercooler
3.5 inches stainless turbo back exhaust
50mm Turbosmart gate plumbed back
Haltech Plug-in ECU
Tuned at Chequered tuning

Still have boost control issues to sort, making 400rwkws @ 20psi so far. 

Edited November 17, 2022 by hypergear

[hypergear]

R34 GTT
Factory Rb25det Neo Engine:
ID 1000 injectors
Walbro 460L Pump
GTR Coilpack upgrade
HyperGear ATR43SS2 internally gated Turbocharger (2022 June release)
Plazamaman Forward facing plenum
Plazamaman 600x300x76mm intercooler
3 inches stainless turbo back exhaust
Link ECU

Tuned at Chequered tuning Work done at CPG.

Final result of a responsive 346rwkws @ 22psi on E85 fuel so far. Boost held perfectly till red line with plenty of power throughout rev range

 

 

[hypergear]

R32 GTST Manual

Rb25det Engine

Cp pistons

Spool rods

Cam tech 264 cams. 0 , 0 on Cams gears, No VCT

Hypergear ATR43SS3 turbocharger in T3 .63 rear

Freedy intake

6 Boost T3 Single entry exhaust manifold

Valve springs

1650cc injector

Haltech ecu

389rwkws @ 20psi, Full boost @ 4000RPM.

Pump 98 / Ron 93 fuel. NO E85 this time.