Rb26 Turbo Upgrade, All Dyno Results

[Steve85]

Car revs to 8k. I left that to Chris and the guys at Racepace to set.

[Redknight]

[Nosure]

On 2017/3/30 at 0:00 AM, Nosure said:

R34 gtr nur

Rb28

Poncam 260

valve spring

gtx3582 0.82 ts t3

4inch front pipe 3.5inch catback

1650cc injectors

650awhp @ 28psi 

500hp on 5000 rpm

Cam adjustment done.

[Steve85]

18 hours ago, Nosure said:

Cam adjustment done.

 

That looks much better. You said you didn't have too much trouble with drive-ability before. Can you feel the difference on the road?

[SimonR32]

1 hour ago, Steve85 said:

That looks much better. You said you didn't have too much trouble with drive-ability before. Can you feel the difference on the road?

It's got twice the horsepower at 4500rpm! That would be a massive difference

[Nosure]

Hi. Yes it drive better, feel faster again. But still room to improve:)  response feel like N1s on 2.6, but a lot more power.

2 hours ago, Steve85 said:

That looks much better. You said you didn't have too much trouble with drive-ability before. Can you feel the difference on the road?

 

[Nosure]

1 hour ago, SimonR32 said:

It's got twice the horsepower at 4500rpm! That would be a massive difference

That's right. 250hp different on 4500rpm. I feel I need better tires, 2nd gear car shift lane itself when full boost:(

[No Crust Racing]

Original setup made 354rwk @ 24-25psi.

• Haltech Platinum Pro
• N1 manifolds
• -9s
• HPI dumps and 3" front pipes
• Full 3.5" exhaust after merge, catless
• Big K&N pods in partial enclosure.
• E85 with 1000cc Injectors and 460lph walbro.
• Cam gears, 
• Twin turbo pipe mod
• Plazmaman 76mm Intercooler

Added/changed.

• BC Springs
• Kelford L182A Cams
• Delete pressure valve in fuel line in tank. 
• Aeroflow fuel filter.
• Rewired fuel pump with higher gauge wire after realising the current wiring was 15amp max and the pump can draw into the mid 20s. 

Fuel mods done as fuel pressure couldn't keep up. 

Now peaks at 23-24psi but tapers off to 21ish. I think these turbos are out of puff now, but not a bad result for -9s. Pretty happy given the bay looks fairly low key. 
 

Edited July 9, 2017 by ActionDan

[Trailmix]

 R32 GTR

530hp@19psi

2.8l (supposedly)

tomei cams

tomei manifolds

700cc injectors

nismo fpr/pump

R34 N1 (AA403) turbos

hpi elbows 

mines frontpipe

Decat

HKS exhaust 

tomei ecu

 

 

 

Edited July 17, 2017 by Trailmix

[No Crust Racing]

390rwkw on N1s? 

Even with a 2.8 and Cams that seems very high for those turbos?

[Trailmix]

The plates on the turbos were 14411-AA403. I didn't think it would put down those numbers either, but the car put down 495hp on the first run and then we turned up the boost just a little more. 

[No Crust Racing]

Odd, how much boost? 

[Trailmix]

530@19psi

IMG_1786.MOV

Edited July 18, 2017 by Trailmix

[No Crust Racing]

Sorry missed that.

Maybe someone else can comment, is a 2.8 and Cams enough to get that number? I'm assuming they're Type B's so around 264 duration. 

19psi is not a lot of airflow from N1s. 

Must be nice to drive

 

[Trailmix]

I don't know which cams they are, when the car was listed for sale in Japan. It stated tomei 2.8l stroker kit with tomei poncams with cams gears. Though the tomei ecu causes the afr to drop into the 10s underfull boost. Going to switch to a platinum pro. I expected quicker spool with the N1s, might get better numbers with timing adjustment. 

Edited July 18, 2017 by Trailmix

[Nihilation]

92 GTR
RB26 Stock bottom end
HKS 2530's, divorced dumps
Trust Intercooler
3.5" exhaust, SARD high flow cat
Nismo 555cc injectors I think
Stock cam gears
Unknown fuel pump but definitely not stock
Unknown oil pump (but more pressure than stock)
HKS EVC @ 1.3 bar
HKS FCON V

This is how the car came to be, off the boat from Japan.  It made 400 WHP in AWD mode on a Dyno Dynamics dyno.  The idle AFR was 10's so I knew I needed to get it re-tuned as this is my daily driver.

RECOMMENDATIONS?

Since that dyno, I picked up a Haltech Platinum Pro PNP, removed the HKS EVC and bought a MAC valve.  None of that has been installed yet.  I'm not looking for huge power but I do want it to be fun and reliable enough to take to the occasional track day.  The age of the current injectors and fuel pump are unknown.  Originally I wasn't looking for more power.  400 is fun enough, just wanted to fix that fat idle mixture.  A local tuner suggested Fuel Injector Development 630cc injectors ($375 USD) and a new pump but I'm more inclined to spend that on adjustable cam gears for more responsive low end if my current injectors and pump are sufficient.  If I did new injectors and pump, what's a good drop in solution? Other thoughts?

 

[djvoodoo]

R34 GTR Vspec

-9 Turbos at 22 psi (set to spike to 23-24 psi at around 4000rpm through midrange)

Plazmaman 76mm intercooler

HKS Super Turbo cat back with Venom 100 cell cat and Fujitsubo front pipe

HKS EVC-6

ARP head studs

Tomei cam gears

Walbro pump

700cc Sard injectors

Twin Turbo pipe divider

Vipec ECU

98 Pump fuel

314.3 AWKW/ (420HP)

**Note - wavy dyno curve due to 4wd kicking in on Dyno

[HarrisRacing]

New results now that I'm on E85.

2.75L stock bore (86mm) BC stroker (79mm stroke).

BC SS valves, valve guides, retainers, springs

Tomei Poncam A's

Hypertune V2 intake

6 boost manifold for IWG Borg Warner 8374 EFR turbo .92 IWG on turbosmart actuator

ported head

ID 1300x injectors (nearly maxxed)

2x 460 walbro fuel pumps with 3rd as a lift pump to the sump

ECU masters EMU black

LS2 DBW TB

the low 7xx runs are 26 psi tapering to around 24

the 740 run is 30 psi tapering to around 24-25.

I have added 5th gear spoolup log because this is an inertia dyno and falsely makes this setup seem laggy.

boost is all in at 3800 usually in 3rd gear.

Now for the crazy stuf...STOCK intercooler, STOCK trans, 3" exhaust.

 

[Nosure]

On 12/14/2017 at 3:02 AM, HarrisRacing said:

New results now that I'm on E85.

2.75L stock bore (86mm) BC stroker (79mm stroke).

BC SS valves, valve guides, retainers, springs

Tomei Poncam A's

Hypertune V2 intake

6 boost manifold for IWG Borg Warner 8374 EFR turbo .92 IWG on turbosmart actuator

ported head

ID 1300x injectors (nearly maxxed)

2x 460 walbro fuel pumps with 3rd as a lift pump to the sump

ECU masters EMU black

LS2 DBW TB

the low 7xx runs are 26 psi tapering to around 24

the 740 run is 30 psi tapering to around 24-25.

I have added 5th gear spoolup log because this is an inertia dyno and falsely makes this setup seem laggy.

boost is all in at 3800 usually in 3rd gear.

Now for the crazy stuf...STOCK intercooler, STOCK trans, 3" exhaust.

 

US HP?

[HarrisRacing]

US HP?

Sure. Stock cadillac ctsv makes 485 whp on this dyno. Stock focus RS mashes 318 whp on this dyno.

But it's inertia so mine looks like it spools late. I also live AT sea level. Was like 5 C in shop that night so cold dense air.